View TPS60310DGSR_6784175.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

tps60310, tps60311, tps60312, tps60313 single-cell to 3-v/3.3-v, 20-ma dual output, high-efficiency charge pump with snooze mode slvs362a ? may 2001 ? revised august 2001 1 post office box 655303 ? dallas, texas 75265 features regulated 3-v or 3.3-v output voltage with up to 20-ma output current from a 0.9-v to 1.8-v input voltage range high power conversion efficiency (up to 90%) over wide output current range, optimized for 1.2-v battery voltage snooze mode for improved efficiency at low-output current additional output with 2 times v i (out1) device quiescent current less than 2 a supervisor included; open drain or push-pull power good output no inductors required/low emi only five small, 1- f ceramic capacitors required microsmall 10-pin msop package applications pagers battery-powered toys portable measurement instruments home automation products medical instruments (like hearing instruments) metering applications using msp430 microcontroller portable smart card readers description the tps6031x step-up, regulated charge pumps generate a 3-v 4% or 3.3-v 4% output voltage from a 0.9-v to 1.8-v input voltage (one alkaline, nicd, or nimh battery). only five small 1- f ceramic capacitors are required to build a complete high-efficiency dc/dc charge pump converter. to achieve the high efficiency over a wide input voltage range, the charge pump automatically selects between a 3x or 4x conversion mode. typical application circuit 24 87 c1f 1 f c2f 1 f out1 c1? c1+ c2? c2+ 5 + c (out1) 1 f 2 in max 40 ma out2 6 + c (out2) 1 f 3.3 v 4% max 20 ma r 10 pg v in 3 c in 1 f input 0.9 v to 1.8 v 1 snooze on /off gnd 9 tps60310 + 0 10 20 30 40 50 60 70 80 90 0.001 0.01 0.1 1 efficiency ? % efficiency vs output current (out2) 10 100 snooze mode normal mode i o ? output current (out2) ? ma v i = 1.3 v snooze mode improves efficiency at an output current in the range of 1 a to 100 a. copyright ? 2001, texas instruments incorporated please be aware that an important notice concerning availability, standard warranty, and use in critical applications of texas instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. actual size 3,05 mm x 4,98 mm 1 2 3 4 5 10 9 8 7 6 snooze c1? v in c1+ out1 pg gnd c2? c2+ out2 dgs packages (top view) production data information is current as of publication date. products conform to specifications per the terms of texas instruments standard warranty. production processing does not necessarily include testing of all parameters.
tps60310, tps60311, tps60312, tps60313 single-cell to 3-v/3.3-v, 20-ma dual output, high-efficiency charge pump with snooze mode slvs362a ? may 2001 ? revised august 2001 2 post office box 655303 ? dallas, texas 75265 description (continued) output 1 (out1) can deliver a maximum of 40 ma, from a 1-v input, with output 2 (out2) not loaded. out2 can deliver a maximum of 20 ma, from a 1-v input, with out1 not loaded. both outputs can be loaded at the same time, but the total output current of the first voltage doubler must not exceed 40 ma. for example, the load at out1 is 20 ma and the load at output 2 is 10 ma. in snooze mode, the devices operate with a typical operating current of 2 a, while the output voltage is maintained at 3.3 v 10% or 3 v 10%, respectively. this is lower than the self-discharge current of most batteries. load current in snooze mode is limited to 2 ma. if the load current increases above 2 ma, the output voltage drops further and the devices automatically exits the snooze mode and operate in normal mode to regulate to the nominal output voltage with higher output currents. the device is set into the snooze mode by taking the snooze pin low, and is set into normal operating mode by taking the snooze pin high. a power-good function supervises the output voltage of out2 and can be used for power up and power down sequencing. power-good (pg) is offered as either open-drain or push-pull output. available options part number ? marking dgs package output current 1 [ma] ? output current 2 [ma] output voltage 1 [v] output voltage 2 [v] feature tps60310dgs atg 40 20 2 x v in 3.3 open-drain power-good output tps60311dgs ati 40 20 2 x v in 3 open-drain power-good output tps60312dgs atk 40 20 2 x v in 3.3 push-pull power-good output tps60313dgs atl 40 20 2 x v in 3 push-pull power-good output ? the dgs package is available taped and reeled. add r suffix to device type (e.g. TPS60310DGSR) to order quantities of 2500 devi ces per reel. ? if out2 is not loaded. if out1 is not loaded.
tps60310, tps60311, tps60312, tps60313 single-cell to 3-v/3.3-v, 20-ma dual output, high-efficiency charge pump with snooze mode slvs362a ? may 2001 ? revised august 2001 3 post office box 655303 ? dallas, texas 75265 tps60310 and tps60311 functional block diagram cp1 2x (doubler) charge pump oscillator control c1f c1+ c1 ? cp2 1.5x/2x charge pump reg _ + _ + v ref _ + c2f c2+ c2 ? pg out1 out2 gnd snooze v in (push-pull output for tps60312 and tps60313) terminal functions terminal i/o description name no. i/o description c1+ 4 positive terminal of the flying capacitor c1f c1 ? 2 negative terminal of the flying capacitor c1f c2+ 7 positive terminal of the flying capacitor c2f c2 ? 8 negative terminal of the flying capacitor c2f gnd 9 ground out1 5 o 2 v in power output. bypass out1 to gnd with the output filter capacitor c (out1) . out2 6 o regulated 3.3-v power output (tps60310, tps60312) or 3-v power output (tps60311, tps60313), respectively bypass out2 to gnd with the output filter capacitor c (out2) . pg 10 o power good detector output. as soon as the voltage on out2 reaches about 98% of its nominal value this pin goes high. open drain output on tps60310 and tps60311. a pullup resistor should be connected between pg and out1 or out2. push-pull output stage on tps60312 and tps60313 snooze 1 i snooze mode enable input ? snooze = low enables the snooze mode at low output current. ? snooze = high disables the snooze mode. v in 3 i supply input. bypass v in to gnd with a 1- f capacitor.
tps60310, tps60311, tps60312, tps60313 single-cell to 3-v/3.3-v, 20-ma dual output, high-efficiency charge pump with snooze mode slvs362a ? may 2001 ? revised august 2001 4 post office box 655303 ? dallas, texas 75265 detailed description operating principle the tps6031x charge pumps are voltage quadruplers that provide a regulated 3.3-v or 3-v output from a 0.9-v to 1.8-v input. they deliver a maximum load current of 20 ma. designed specifically for space critical battery powered applications, the complete converter requires only five external capacitors and enables the design to use low-cost, small-sized, 1- f ceramic capacitors. the tps6031x circuits consist of an oscillator, a voltage reference, an internal resistive feedback circuit, two error amplifiers, two charge pump stages with mosfet switches, a shutdown/start-up circuit, and a control circuit. snooze mode the devices contain a circuit which dramatically reduces the quiescent current at light loads. this so called snooze mode must be enabled by pulling the snooze pin low. when the output current decreases below the snooze mode threshold, the device enters the snooze mode. in snooze mode, the main error amplifier with 4% error and 50- a supply current is disabled and a 10%, 2- a regulator controls the output voltage. start-up procedure the start-up performance of the device is independent of the level of the snooze input. when voltage is applied to the input, cp1 will first enter a dc start-up mode during which the capacitor on out1 is charged up to about v in . after that, it starts switching to boost the voltage further up to about two times v in . cp1 first enters a dc start-up mode during which the capacitor on out1 is charged up to about v in . cp2 then follows and charges up the capacitor on out2 to about the voltage on out1, after that, it also starts switching and boosts up the voltage to its nominal value. the voltage at the snooze pin must not exceed the highest voltage applied to the device. note: during start-up with v out = 0 v, the highest voltage is the input voltage. power-good detector the power-good output is an open-drain output on the tps60310 and tps60311 or a push-pull output on the tps60312 and tps60313. the pg-output pulls low when the output of out2 is out of regulation. when the output rises to within 98% of regulation, the power-good output goes active high. in shutdown, power-good is pulled low. in normal operation, an external pullup resistor with the tps60310 and tps60311 is typically used to connect the pg pin to vout. the resistor should be in the 100-k ? to 1-m ? range. if the pg output is not used, it should remain unconnected. output current at pg (tps60312, tps60313) reduces maximum output current at out2. in snooze mode, the output voltage is sampled at a rate up to 2 ms and is applied to the power-good comparator. in normal mode, the output voltage is measured continuously.
tps60310, tps60311, tps60312, tps60313 single-cell to 3-v/3.3-v, 20-ma dual output, high-efficiency charge pump with snooze mode slvs362a ? may 2001 ? revised august 2001 5 post office box 655303 ? dallas, texas 75265 absolute maximum ratings over operating free-air temperature (unless otherwise noted) ? input voltage, v i (in to gnd) (see note 1) ? 0.3 v to 2 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . output voltage, v o (out1, out2, en, pg to gnd) (see note 1) ? 0.3 v to 3.6 v . . . . . . . . . . . . . . . . . . . . . . . . voltage, (c1+ to gnd) ? 0.3 v to v o(out1) + 0.3 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . voltage, (c1 ? to gnd, c2 ? to gnd) ? 0.3 v to v in + 0.3 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . voltage, (c2+ to gnd) ? 0.3 v to v o(out2) + 0.3 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . continuous power dissipation see dissipation rating table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . output current, i o (out1) 80 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . output current, i o (out2) 40 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . storage temperature range, t stg ? 55 c to 150 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . maximum junction temperature, t j 150 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ? stresses beyond those listed under ? absolute maximum ratings ? may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under ? recommended operating conditions ? is not implied. exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. note 1: the voltage at snooze and pg can exceed in up to the maximum rated voltage without increasing the leakage current drawn by these pins. dissipation rating table package t a <25 c power rating derating factor above t a = 25 c t a = 70 c power rating t a = 85 c power rating dgs 424 mw 3.4 mw/ c 271 mw 220 mw note: the thermal resistance junction to ambient of the dgs package is r th ? ja = 294 c/w. recommended operating conditions min nom max unit input voltage, v i 0.9 1.8 v output current (out2), i o(out2) 20 ma output current (out1), i o(out1) 40 ma input capacitor, c i 1 f flying capacitors, c1f, c2f 1 f output capacitors, c o(1), c o(2) 1 f operating junction temperature, t j ? 40 125 c
tps60310, tps60311, tps60312, tps60313 single-cell to 3-v/3.3-v, 20-ma dual output, high-efficiency charge pump with snooze mode slvs362a ? may 2001 ? revised august 2001 6 post office box 655303 ? dallas, texas 75265 electrical characteristics at c in = c1f = c2f = c (out1) = c (out2) = 1 f, t c = ? 40 c to 85 c, v in = 1 v, v (snooze) = v in (unless otherwise noted) parameter test conditions min typ max unit v in supply voltage range 0.9 1.8 v i v in 1.1 v, i o(out2) = 0 ma, i (pg,1) = 0 ma 40 i o(out1) maximum output current for tps60310, v in = 0.9 v, i o(out2) = 0 ma, i (pg,1) = 0 ma 20 ma i o(out2) maximum out ut current for tps60310 , tps60312 v in 1.1 v, i o(out1) = 0 ma, i (pg,1) = 0 ma 20 ma i o(out2) v in = 0.9 v, i o(out1) = 0 ma, i (pg,1) = 0 ma 10 i v in 1.1 v, i o(out2) = 0 ma, i (pg,1) = 0 ma 40 i o(out1) maximum output current for tps60311, tps60313 v in = 0.9 v, i o(out2) = 0 ma, i (pg,1) = 0 ma 20 ma i tps60313 v in 1 v, i o(out1) = 0 ma, i (pg,1) = 0 ma 20 ma i o(out2) v in = 0.9 v, i o(out1) = 0 ma, i (pg,1) = 0 ma 12 1.1 v < v in < 1.8 v, i o(out1) = 0 ma 0 < i o(out2) < 20 ma 3.17 3.3 3.43 v v o(out2) output voltage for tps60310, tps60312 0.9 v < v in < 1.1 v, i o(out1) = 0 ma, i o(out2) < 10 ma 3.17 3.3 3.43 v 0.9 v < v in < 1.8 v, v (snooze) = 0 v, 0 < i o(out2) < 1 ma or 0 < i o(out1) < 2 ma 2.85 3.3 3.6 v 1 v < v in < 1.8 v, i o(out1) = 0 ma, 0 < i o(out2) < 20 ma 2.88 3 3.12 v v o(out2) output voltage for tps60311, tps60313 v in > 1.65 v, i o(out1) = 0 ma, 25 a < i o(out2) < 20 ma 2.88 3 3.15 v 0.9 v < v in < 1.8 v, v (snooze) = 0 v, 0 < i o(out2) < 1 ma or 0 < i o(out1) < 2 ma 2.6 3.3 3.27 v v output voltage ripple out2 i o(out2) = 20 ma , i o(out1) = 0 ma 30 mv v p ? p output voltage ripple out1 i o(out1) = 40 ma , i o(out2) = 0 ma 60 mv p ? p i q quiescent current (no-load input current) i o = 0 ma, v in = 1.8 v 35 70 a i quiescent supply current in snooze mode v in = 1.65 v, v (snooze) = 0 v, t c = 60 c 2 10 a i (sq) quiescent supply current in snooze mode v in = 1.65 v, v (snooze) = 0 v, t c 25 c 1.5 4 a f osc internal switching frequency 470 700 900 khz v il(en) en input low voltage v in = 0.9 v to 1.8 v 0.3 v in v v ih(en) en input high voltage v in = 0.9 v to 1.8 v 0.7 v in v i lkg en input leakage current v (en) = 0 v or v in or v o(out2) or v o(out1) 0.01 0.1 a linskip switching threshold v in = 1.25 v 7.5 ma snooze mode threshold v in = 1 25 v i o(out1) 2 8 ma snooze mode threshold v in = 1.25 v i o(out2) 1 4 ma
tps60310, tps60311, tps60312, tps60313 single-cell to 3-v/3.3-v, 20-ma dual output, high-efficiency charge pump with snooze mode slvs362a ? may 2001 ? revised august 2001 7 post office box 655303 ? dallas, texas 75265 electrical characteristics at c in = c1f = c2f = c (out1) = c (out2) = 1 f, t c = ? 40 c to 85 c, v in = 1 v, v (snooze) = v in (unless otherwise noted) (continued) parameter test conditions min typ max unit short circuit current v18v v o(out2) = 0 v 5 20 50 ma short circuit current v in = 1.8 v v o(out1) = 0 v 2 80 150 ma output load regulation v in = 1.25 v, t c = 25 c 2 ma < i o(out2) < 20 ma 0.1 %/ma output line regulation 1 v < v in < 1.65 v, t c = 25 c, i o(out) = 10 ma 0.75 %/v output line regulation 1 v < v in < 1.65 v, t c = 25 c, i o(out2) = 1 ma, v (snooze) = 0 v 1 %/v no load start-up time 400 s impedance of first charge pump stage 4.0 ? st t f t out2 ( i i t t l d v in 1.1 v 165 start-up performance at out2 (minimum start-up load resistance) v in 1 v 330 ? res i s t ance ) v in = 0.9 v 1000 ? ? electrical characteristics for power good comparator of devices tps6031x at t c = ? 40 c to 85 c, v in = 1 v and v (snooze) = v in (unless otherwise noted) parameter test conditions min typ max unit v (pg) power-good trip voltage v o ramping positive v o ? 1% v o v v hys power-good trip voltage hysteresis v o ramping negative 10% v ol power-good output voltage low v o = 0 v, i (pg) = 1.6 ma 0.3 v i power good leakage current tps60310 v o = 3.3 v, v (pg) = 3.3 v 0.01 0.1 a i lkg power-good leakage current tps60311 v o = 3 v, v (pg) = 3 v 0.01 0.1 a v power good output voltage high tps60312 i 5ma 3 v v oh power-good output voltage high tps60313 i o(pg) = ? 5 ma 2.7 v i o(pg,1) output current at power good (source) tps60312, tps60313 ? 5 ma i o(pg,0) output current at power good (sink) all devices v (pg) = 0 v 1.6 ma r (pg,1) output resistance at power g ood tps60312, tps60313 v (pg) = v o(out2) 15 ? r (pg,0) out ut resistance at ower good all devices v (pg) = 0 v 100 ?
tps60310, tps60311, tps60312, tps60313 single-cell to 3-v/3.3-v, 20-ma dual output, high-efficiency charge pump with snooze mode slvs362a ? may 2001 ? revised august 2001 8 post office box 655303 ? dallas, texas 75265 typical characteristics table of graphs figure efficiency vs output current (tps60310 and tps60311) 1, 2 i s supply current vs output current 3 i q quiescent current vs input voltage 4 v o(out2) output voltage at out2 vs output current (tps60310 and tps60311) 5, 6 v o(out1) output voltage at out1 vs output current at 25 c, v i = 0.9 v, 1.1 v, 1.25 v, 1.4 v, 1.6 v, 1.8 v 7 v o(out2) output voltage at out2 vs input voltage (tps60310 and tps60311) 8, 9 v o(out1) output voltage at out1 vs input voltage (tps60310 and tps60311) 10 v o(out2) output voltage at out2 vs free-air temperature (tps60310, tps60312, tps60311, and tps60313) 11, 12 v o(out2) output voltage ripple at out2 13 minimum input voltage vs output current for tps60310, tps60312, tps60311, and tps60313 14, 15 start-up timing enable 16 switching frequency vs input voltage 17 load transient response 18 line transient response 19 v o output voltage vs time 20 output voltage ripple in snooze mode 21 typical characteristics figure 1 i o ? output current ? ma 0 10 20 30 40 50 60 70 80 90 0.1 1 10 100 v i = 0.9 v v i = 1.25 v v i = 1.8 v efficiency ? % tps60310, tps60312 efficiency vs output current v (snooze) = v i figure 2 i o ? output current ? ma 0 10 20 30 40 50 60 70 80 90 0.1 1 10 100 v i = 0.9 v v i = 1.25 v v i = 1.8 v efficiency ? % tps60311, tps60313 efficiency vs output current v (snooze) = v i
tps60310, tps60311, tps60312, tps60313 single-cell to 3-v/3.3-v, 20-ma dual output, high-efficiency charge pump with snooze mode slvs362a ? may 2001 ? revised august 2001 9 post office box 655303 ? dallas, texas 75265 typical characteristics figure 3 i o ? output current ? ma 0 20 40 60 80 100 120 140 010203040 v i = 1.25 v v i = 1.8 v v i = 0.9 v ? supply current ? ma tps60310 supply current vs output current i cc figure 4 v i ? input voltage ? v 20 22 24 26 28 30 32 34 36 0.80 1 1.20 1.40 1.60 1.80 2 t a = ? 40 c t a = 25 c t a = 85 c quiescent current ? tps6031x quiescent current vs input voltage a v (snooze) = v i figure 5 i o ? output current (out2) ? ma 2.6 2.8 3 3.2 3.4 0 10 20 30 40 v i = 1.8 v v i = 1.25 v v i = 1.1 v v i = 0.9 v ? output voltage ? v tps60310, tps60312 output voltage (out2) vs output current (out2) v o figure 6 2.6 2.7 2.8 2.9 3 3.1 3.2 010203040 v i = 1.25 v v i = 1.8 v v i = 1.1 v v i = 0.9 v tps60311, tps60313 output voltage (out2) vs output current (out2) i o ? output current (out2) ? ma ? output voltage ? v v o
tps60310, tps60311, tps60312, tps60313 single-cell to 3-v/3.3-v, 20-ma dual output, high-efficiency charge pump with snooze mode slvs362a ? may 2001 ? revised august 2001 10 post office box 655303 ? dallas, texas 75265 typical characteristics figure 7 v i = 1.25 v 1.5 2 2.5 3 3.5 4 0204060 v i = 1.8 v v i = 1.6 v v i = 1.4 v v i = 1.1 v v i = 0.9 v tps60310, tps60312 output voltage (out1) vs output current (out1) i o ? output current (out1) ? ma ? output voltage ? v v o figure 8 v i ? input voltage ? v 3 3.05 3.1 3.15 3.2 3.25 3.3 3.35 0.8 1 1.2 1.4 1.6 1.8 i o(out2) = 20 ma i o(out2) = 0.1 ma i o(out2) = 1 ma i o(out2) = 10 ma tps60310, tps60312 output voltage (out2) vs input voltage ? output voltage (out2) ? v v o figure 9 2.85 2.9 2.95 3 3.05 3.1 0.8 1 1.2 1.4 1.6 1.8 i o(out2) = 0.1 ma i o(out2) = 1 ma i o(out2) = 10 ma i o(out2) = 20 ma v i ? input voltage ? v tps60310, tps60312 output voltage (out2) vs input voltage ? output voltage (out2) ? v v o figure 10 1.5 2 2.5 3 3.5 0.8 1 1.2 1.4 1.6 1.8 i o(out1) = 0.1 ma i o(out1) = 40 ma i o(out1) = 10 ma v i ? input voltage ? v tps6031x output voltage (out1) vs input voltage ? output voltage (out1) ? v v o
tps60310, tps60311, tps60312, tps60313 single-cell to 3-v/3.3-v, 20-ma dual output, high-efficiency charge pump with snooze mode slvs362a ? may 2001 ? revised august 2001 11 post office box 655303 ? dallas, texas 75265 typical characteristics figure 11 2.80 2.90 3 3.10 3.20 3.30 3.40 ? 40 10 60 110 tps60310, tps60312 output voltage (out2) vs free-air temperature ? output voltage (out2) ? v v o v i = 1.8 v v i = 1.25 v v i = 1 v t a ? free-air temperature ? c figure 12 2.90 2.92 2.94 2.96 2.98 3 3.02 3.04 ? 40 10 60 110 tps60311, tps60313 output voltage (out2) vs free-air temperature ? output voltage (out2) ? v v o v i = 1.8 v v i = 1.25 v v i = 1 v t a ? free-air temperature ? c figure 13 tps6031x output voltage ripple (out2) i o(out2) = 20 ma, v i = 1.2 v 10 mv/div 500 ns/div figure 14 0.70 0.75 0.80 0.85 0.90 0.95 1.00 1.05 1.10 1.15 1.20 0.10 1 10 100 t a = 85 c t a = ? 40 c t a = 25 c ? minimum input voltage ? v tps60310, tps60312 minimum input voltage vs output current v i(min) i o ? output current ? ma
tps60310, tps60311, tps60312, tps60313 single-cell to 3-v/3.3-v, 20-ma dual output, high-efficiency charge pump with snooze mode slvs362a ? may 2001 ? revised august 2001 12 post office box 655303 ? dallas, texas 75265 typical characteristics figure 15 0.70 0.75 0.80 0.85 0.90 0.95 1.00 1.05 1.10 1.15 1.20 0.10 1 10 100 ? minimum input voltage ? v tps60311, tps60313 minimum input voltage vs output current v i(min) i o ? output current ? ma t a = 85 c t a = ? 40 c t a = 25 c figure 16 start-up timing enable v o(out2) v o(out1) i in v (en) 2 v/div 2 v/div 100 ma/div 1 v/div 50 us/div figure 17 650 660 670 680 690 700 710 720 730 0.8 1.3 1.8 t a = ? 40 c t a = 85 c t a = 25 c switching frequency ? khz switching frequency vs input voltage v i ? input voltage ? v figure 18 load transient response v o(out2) i o(out2) v i = 1.25 v, load step 2 ma to 18 ma to 2 ma, t a = 25 c 20 mv/div 10 ma/div 20 us/div
tps60310, tps60311, tps60312, tps60313 single-cell to 3-v/3.3-v, 20-ma dual output, high-efficiency charge pump with snooze mode slvs362a ? may 2001 ? revised august 2001 13 post office box 655303 ? dallas, texas 75265 typical characteristics figure 19 v o(out2) v i = 1.1 v to 1.7 v to 1.1 v, i o(out2) = 20 ma t a = 25 c line transient response 50 mv/div 500 us/div v i 1 v/div v o(out2) 100 mv/div v (snooze) 1 v/div v i = 1.25 v, i o(out2) = 1 ma, c o(out2) = 1 f output voltage vs time figure 20 200 us/div figure 21 v o(out2) 100 mv/div v i = 1.25 v, i o(out2) = 1 ma, c o(out2) = 10 f output voltage ripple in snooze mode 200 us/div
tps60310, tps60311, tps60312, tps60313 single-cell to 3-v/3.3-v, 20-ma dual output, high-efficiency charge pump with snooze mode slvs362a ? may 2001 ? revised august 2001 14 post office box 655303 ? dallas, texas 75265 application information design procedure capacitor selection the tps6031x devices require only five external capacitors. their values are closely linked to the required output current and the output noise and ripple requirements. it is possible to only use 1- f capacitors of the same type. the input capacitor improves system efficiency by reducing the input impedance and stabilizing the input current. the minimum required capacitance of the output capacitor (c o ) that can be selected is 1 f. depending on the maximum allowed output ripple voltage, larger values can be chosen. table 1 shows capacitor values recommended for low output voltage ripple operation. a recommendation is given for the smallest size. table 1. recommended capacitor values for low-output voltage ripple operation v in [v] i o(out2) [ma] c in [ f] c xf [ f] c out [ f] v p ? p [mv] at 20 ma/ [v] [ma] ceramic ceramic ceramic at 20 ma/ v in = 1.1 v 0.9...1.8 0 20 1 1 1 16 0.9 1.8 0 20 1 1 2.2 10 0.9 1.8 0 20 1 1 10 // 0.1 6 table 2. recommended capacitors manufacturer part number size capacitance type taiyo yuden umk212bj104mg lmk212bj105kg lmk212bj225mg jmk316bj475kl 0805 0805 0805 1206 0.1 f 1 f 2.2 f 4.7 f ceramic ceramic ceramic ceramic avx 0805zc105kat2a 1206zc225kat2a 0805 1206 1 f 2.2 f ceramic ceramic table 3 lists the manufacturers of recommended capacitors. however, ceramic capacitors will provide the lowest output voltage ripple due to their typically lower esr. table 3. recommended capacitor manufacturers manufacturer capacitor type internet taiyo yuden x7r/x5r ceramic www.t-yuden.com avx x7r/x5r ceramic www.avxcorp.com vishay x7r/x5r ceramic www.vishay.com kemet x7r/x5r ceramic www.kemet.com tdk x7r/x5r ceramic www.component.tdk.com
tps60310, tps60311, tps60312, tps60313 single-cell to 3-v/3.3-v, 20-ma dual output, high-efficiency charge pump with snooze mode slvs362a ? may 2001 ? revised august 2001 15 post office box 655303 ? dallas, texas 75265 application information capacitor selection (continued) out1 5 + c (out1) 1 f out2 6 + c (out2) 1 f output 3.3 v, 20 ma r1 10 pg v in 3 c in 1 f input 0.9 v to 1.8 v 1 snooze gnd 9 tps60310 pg 7 8 c 2f 1 f c2+ c2 ? c1+ c1 ? c 1f 1 f 4 2 + figure 22. typical operating circuit for the maximum output current and best performance, five ceramic capacitors of 1 f are recommended. for lower currents or higher allowed output voltage ripple, other capacitors can be used. it is recommended that the input and output capacitors have a minimum value of 1 f. this value is necessary to assure a stable operation of the system due to the linear mode. with flying capacitors lower than 1 f, the maximum output power decreases. this means that the device works in the linear mode with lower output currents. output filter design the power-good output is capable of driving light loads up to 5 ma (see figure 23). therefore, the output resistance of the power-good pin with the output capacitor, can be used as an rc-filter. _ + charge pumps, logic and control c 1f c1+ c1 ? _ + v ref c2+ c2 ? c 2f out2 c (out2) out1 c (out1) pg c pg r (pg1) r (pg0) gnd v in snooze figure 23. tps60312, tps60313 push-pull power-good output-stage as filtered supply
tps60310, tps60311, tps60312, tps60313 single-cell to 3-v/3.3-v, 20-ma dual output, high-efficiency charge pump with snooze mode slvs362a ? may 2001 ? revised august 2001 16 post office box 655303 ? dallas, texas 75265 application information output filter design (continued) due to r (pg,1), an output filter can easily be formed with an output capacitor (c pg ). cutoff frequency is given by: ? c 1 2 r (pg,1) c pg (1) v (pg,1) v o(out2) 1 1 2 ? r (pg,1) c pg 2 and ratio v o /v i for the ac ripple is: (2) with r (pg,1) = 15 ? , c pg = 0.1 f, and f = 600 khz (at nominal switching frequency) v (pg,1) v o(out2) 0.175 (3) load current sourced by power-good output reduces maximum output current at out2. during start-up (power-good going high) current charging c pg discharges c (out2) . therefore, c pg must not be larger than c pg 0.1 c (out2) or the device does not start. by charging c pg through c (out2) , the output voltage at out2 decreases. if the capacitance of c pg is to large, the circuit detects power bad. the power-good output goes low and discharges c pg . then the cycle starts again. figure 24 shows a configuration with an lc-post filter to further reduce output ripple and noise. out1 5 + c (out1) 1 f out2 6 c (out2) 1 f r1 10 pg v in 3 c in 1 f input 0.9 v to 1.8 v 1 snooze on /off gnd 9 tps60310 pg 7 8 c 2f 1 f c2+ c2 ? c1+ c1 ? c 1f 1 f 4 2 lp c p v p(out) ++ figure 24. lc-post filter table 4. recommended values for lowest output voltage ripple v in i o ( out2 ) c in [ f] c xf [ f] c out [ f] l[ h] c p [ f] v p ( out ) v in [v] i o(out2) [ma] c in [ f] ceramic c xf [ f] ceramic c out [ f] ceramic l p [ h] c p [ f] ceramic v p(out) v p ? p [mv] 0.9 1.8 20 1 1 1 0.1 0.1 (x7r) 16 0.9 1.8 20 1 1 1 0.1 1 // 0.1 (x7r) 12 0.9 1.8 20 1 1 1 1 0.1 (x7r) 14 0.9 1.8 20 1 1 1 1 1 // 0.1 (x7r) 3
tps60310, tps60311, tps60312, tps60313 single-cell to 3-v/3.3-v, 20-ma dual output, high-efficiency charge pump with snooze mode slvs362a ? may 2001 ? revised august 2001 17 post office box 655303 ? dallas, texas 75265 application information output filter design (continued) out1 5 + c (out1) 1 f out2 6 c (out2) 1 f 10 pg v in 3 c in 1 f 1 snooze gnd 9 tps60312 7 8 c 2f 1 f c2+ c2 ? c1+ c1 ? c 1f 1 f 4 2 c pg 0.1 f 1.5 v msp430 display amplifier sensor r 1 1 m on + + figure 25. application with msp430; pg as supply for analog circuits power dissipation as given in the data sheet, the thermal resistance of the unsoldered package is r ja = 294 c/w. soldered on the evm, a typical thermal resistance of r ja(evm) = 200 c/w was measured. the thermal resistance can be calculated using equation 4. r ja t j ? t a p d (4) where: t j is the junction temperature. t a is the ambient temperature. p d is the power that needs to be dissipated by the device. the maximum power dissipation can be calculated using equation 5. p d = v in i in ? v o i o = v in(max) (3 i o + i (supply) ) ? v o i o (5) the maximum power dissipation happens with maximum input voltage and maximum output current: at maximum load the supply current is approximately 2 ma. p d = 1.8 v (3 20 ma + 2 ma) ? 3.3 v 20 ma = 46 mw (6) with this maximum rating and the thermal resistance of the device on the evm, the maximum temperature rise above ambient temperature can be calculated using equation 7. ? t j = r ja p d = 200 c/w 46 mw = 10 c (7) this means that internal dissipation increases t j by 10 c. the junction temperature of the device must not exceed 125 c. this means the ic can easily be used at ambient temperatures up to: t a = t j(max) ? ? t j = 125 c ? 10 c = 115 c (8) layout and board space all capacitors should be soldered as close as possible to the ic. a pcb layout proposal for a two-layer board is shown in figure 26. care has been taken to connect all capacitors as close as possible to the circuit to achieve optimized output voltage ripple performance. the bottom layer is not shown in figure 26. it only consists of a ground-plane with a single track between the two vias that can be seen in the left part of the top layer.
tps60310, tps60311, tps60312, tps60313 single-cell to 3-v/3.3-v, 20-ma dual output, high-efficiency charge pump with snooze mode slvs362a ? may 2001 ? revised august 2001 18 post office box 655303 ? dallas, texas 75265 application information layout and board space (continued) en gnd out1 out2 9,8 mm 0 mm 7,62 mm 0 mm gnd v in pg figure 26. recommended pcb layout for tps6031x (top layer) device family products other charge pump dc-dc converters in this family are: table 5. product identification part number description tps60100 2-cell to regulated 3.3-v, 200-ma low-noise charge pump tps60101 2-cell to regulated 3.3-v, 100-ma low-noise charge pump tps60110 3-cell to regulated 5-v, 300-ma low-noise charge pump tps60111 3-cell to regulated 5-v, 150-ma low-noise charge pump tps60120 2-cell to regulated 3.3-v, 200-ma high-efficiency charge pump with low-battery comparator tps60121 2-cell to regulated 3.3-v, 200-ma high-efficiency charge pump with power-good comparator tps60122 2-cell to regulated 3.3-v, 100-ma high-efficiency charge pump with low-battery comparator tps60123 2-cell to regulated 3.3-v, 100-ma high-efficiency charge pump with power-good comparator tps60124 2-cell to regulated 3-v, 200-ma high-efficiency charge pump with low-battery comparator tps60125 2-cell to regulated 3-v, 200-ma high-efficiency charge pump with power-good comparator tps60130 3-cell to regulated 5-v, 300-ma high-efficiency charge pump with low-battery comparator tps60131 3-cell to regulated 5-v, 300-ma high-efficiency charge pump with power-good comparator tps60132 3-cell to regulated 5-v, 150-ma high-efficiency charge pump with low-battery comparator tps60133 3-cell to regulated 5-v, 150-ma high-efficiency charge pump with power-good comparator tps60140 2-cell to regulated 5-v, 100-ma charge pump voltage tripler with low-battery comparator tps60141 2-cell to regulated 5-v, 100-ma charge pump voltage tripler with power-good comparator tps60200 2-cell to regulated 3.3-v, 100-ma low-ripple charge pump with low-battery comparator in msop10 tps60201 2-cell to regulated 3.3-v, 100-ma low-ripple charge pump with power-good comparator in msop10 tps60202 2-cell to regulated 3.3-v, 50-ma low-ripple charge pump with low-battery comparator in msop10 tps60203 2-cell to regulated 3.3-v, 50-ma low-ripple charge pump with power-good comparator in msop10 tps60210 2-cell to regulated 3.3-v, 100-ma low-ripple charge pump with ultralow operating current and low-battery comparator in msop10 tps60211 2-cell to regulated 3.3-v, 100-ma low-ripple charge pump with ultralow operating current and power-good comparator in msop10 tps60212 2-cell to regulated 3.3-v, 100-ma low-ripple charge pump with ultralow operating current and low-battery comparator in msop10 tps60213 2-cell to regulated 3.3-v, 50-ma low-ripple charge pump with ultralow operating current and power-good comparator in msop10
tps60310, tps60311, tps60312, tps60313 single-cell to 3-v/3.3-v, 20-ma dual output, high-efficiency charge pump with snooze mode slvs362a ? may 2001 ? revised august 2001 19 post office box 655303 ? dallas, texas 75265 mechanical data dgs (s-dps-g10) plastic small-outline package 0,69 0,41 0,25 0,15 nom gage plane 4073272/a 03/98 4,98 0,17 6 3,05 4,78 2,95 10 5 3,05 2,95 1 0,27 0,15 0,05 1,07 max seating plane 0,10 0,50 m 0,25 0 ? 6 notes: a. all linear dimensions are in millimeters. b. this drawing is subject to change without notice. c. body dimensions do not include mold flash or protrusion.
important notice texas instruments and its subsidiaries (ti) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. all products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, patent infringement, and limitation of liability. ti warrants performance of its products to the specifications applicable at the time of sale in accordance with ti ? s standard warranty. testing and other quality control techniques are utilized to the extent ti deems necessary to support this warranty. specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. customers are responsible for their applications using ti components. in order to minimize risks associated with the customer ? s applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. ti assumes no liability for applications assistance or customer product design. ti does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of ti covering or relating to any combination, machine, or process in which such products or services might be or are used. ti ? s publication of information regarding any third party ? s products or services does not constitute ti ? s approval, license, warranty or endorsement thereof. reproduction of information in ti data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations and notices. representation or reproduction of this information with alteration voids all warranties provided for an associated ti product or service, is an unfair and deceptive business practice, and ti is not responsible nor liable for any such use. resale of ti ? s products or services with statements different from or beyond the parameters stated by ti for that product or service voids all express and any implied warranties for the associated ti product or service, is an unfair and deceptive business practice, and ti is not responsible nor liable for any such use. also see: standard terms and conditions of sale for semiconductor products. www.ti.com/sc/docs/stdterms.htm mailing address: texas instruments post office box 655303 dallas, texas 75265 copyright ? 2001, texas instruments incorporated

▲Up To Search▲

Price & Availability of TPS60310DGSR

	To Download TPS60310DGSR Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .