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| innovative power tm - 1 - www.active-semi.com copyright ? 2015 active-semi, inc. features ? dedicated single chip solution for mobile power with minimal component count ? 2.4a continuous output current in boost mode ? 2.4a switching charger current ? 96% boost efficiency ( vbat=4.1v) ? adaptive to 10ma-2400ma input sources ? battery disconnection at output short ? <10a low battery leakage current at hz mode during storage ? boost auto turn-off at no load and push button turn-on ? battery over current, over voltage, over temperature and short circuit protections ? boost auto startup with load detection ? prioritized power path from input to output ? 5v+/-100mv output voltage in boost mode ? 1.1mhz/0.55mhz switching frequencies ? 2.2uh inductor and low profile ceramic capacitor ? 4 leds battery level and status indication ? battery impedance compensation ? full cycle of battery charge management preconditioning, fast charge, top off and end of charge ? charge current foldback at 110c die temperature ? ic over temperature protection at 160c ? fcqfn 4x4-20 package applications ? power bank ? mobile power ? backup battery pack ? standalone battery charger with usb output general description act2813/act2813c is a space-saving and high- performance low-profile single-chip solution for backup battery pack and standalone battery charger. act2813/act2813c integrates all the functions that a backup battery pack needs, including switching charger, boost converter and led indication. act2813/act2813c operates at 1.1mhz for switching charger and 0.55mhz for boost converter allowing tiny external inductor and capacitors. act2813/act2813c provides a direct power path from input to output while providing power to switching charger. output has higher priority than battery charger if the input current limit is reached. act2813/act2813c charges battery with full cycle of preconditioning, fast charge with constant current and constant voltage until end of charge. the battery charger is thermally regulated at 110c with charge current foldback. act2813/act2813c boost converter steps battery voltage up to 5v. boost converter features high efficiency, constant current regulation, short circuit protection and over voltage protection. act2813/act2813c provides 3.5ma constant currents to drive 4 leds to indicate battery level and charge status. battery impedance is compensated for battery level indication. 5v/2.4a power bank solution rev 2, 19-may-15 act2813/act2813c boost output voltage (v) output current (a) 0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 5.5 5.0 4.5 4.0 3.5 3.0 boost cc/cv profile v bat =4.1v v bat =3.2v v bat =3.7v
rev 2, 19-may-15 innovative power tm - 2 - www.active-semi.com copyright ? 2015 active-semi, inc. act2813/act2813c ordering information part number output charge current flashlight th pin package ACT2813QY-T 5v/2.4a 2.4a no yes fcqfn 4x4-20 ACT2813QY-T0435 5v/2.4a 2.4a no yes fcqfn 4x4-20 act2813cqy-t 5v/2.4a 2.4a yes no fcqfn 4x4-20 act2813cqy-t0435 5v/2.4a 2.4a yes no fcqfn 4x4-20 battery voltage 4.2v 4.35v 4.2v 4.35v pin configuration rev 2, 19-may-15 innovative power tm - 3 - www.active-semi.com copyright ? 2015 active-semi, inc. act2813/act2813c pin descriptions pin name description 1 led1 battery level indicato r. an internal 3.5ma sink current limit is built in. 2 icst fast charge current setting pin. connect a re sistor from this pin to agnd to set the charge current. the current setting ranges from 1.0a-3.0a. 3 iost output current setting. connect a resistor from this pin to agnd to set output constant current. the current setting ranges from 1.0a-3.0a. 4 csp positive terminal of charge current sense input. kevin sense is required with 10nf ceramic capacitor right across csp and csn pins. 5 vbat/csn battery input and negative terminal of char ge current sense input. connected to the battery pack positive terminal to provide power in high-z mode. bypass to pgnd with a high quality ceramic capacitor placed as close to the ic as possible. 6 pgnd power ground. pgnd is connected to the so urce of low-side n-channel mosfet and the mosfet?s gate driver. pgnd must be connected to agnd externally through ground plane. 7, 8 sw internal switch to output inductor terminal. 9 vout output pin. bypass to pgnd with a high quality low esr and esl ceramic capacitor placed as close to the ic as possible. 10 vin usb or ac adaptor input. when vin is valid, charge and power path is enabled. 11 agnd analog ground. agnd must be connected to pgnd externally through ground plane. 12 npg drive external p-fet to protect output short circuit and leakage during shutdown. npg pin is pulled up to vout internally. npg pin is pulled low if vout is in the range. 13 pb push button input, connect a push button from this pin to agnd, internally pulled up by a 3m ? resistor to battery. pb starts up boost converter if hz pin is grounded and vin is not present. when this pin is pushed for 30ms, led1-4 indicators are enable for 5 seconds. 14 hz boost / high-z mode enable pin, internally pulled up by a 3m ? resistor to battery. when hz pin is pulled ground, boost is enabled if vin is not present. 15 th/fld th: act2813 temperature sensing input. connect to batte ry thermistor terminal. if no use, put 10k pulled down resistor. fld: act2813c open-drain flashlight driver. a internal switch can handle up to 50ma. 16 blvs battery level voltage shift. connect a resistor from this pin to agnd to shift the battery led indication thresholds. 17 rimc battery impendence compensation input. connect to a resistor from this pin to apng to program the battery impedance. 18 led4 battery level indica tor. an internal 3.5ma sink current limit is built in. 19 led3 battery level indica tor. an internal 3.5ma sink current limit is built in. 20 led2 battery level indica tor. an internal 3.5ma sink current limit is built in. 21 ep exposed pad. must be soldered to ground on the pcb. rev 2, 19-may-15 innovative power tm - 4 - www.active-semi.com copyright ? 2015 active-semi, inc. act2813/act2813c absolute maximum ratings c parameter value unit all the pin to pgnd and agnd -0.3 to 6.5 v junction to ambient the rmal resistance 40 c/w maximum power dissipation 2.5 w operating junction temperature -40 to 150 c storage junction temperature -40 to 150 c lead temperature (soldering 10 sec.) 300 c operating ambient temperature -40 to 85 c c : do not exceed these limits to prevent damage to the device. exposure to absolute maximum rati ng conditions for long periods m ay affect device reliability. rev 2, 19-may-15 innovative power tm - 5 - www.active-semi.com copyright ? 2015 active-semi, inc. act2813/act2813c parameter test conditions min typ max uni t input current limit input voltage range 4.5 5.5 v v in over voltage protection vin rising, v in _ovp 5.5 6.0 6.5 v input voltage validation time vi n_uvlo rev 2, 19-may-15 innovative power tm - 7 - www.active-semi.com copyright ? 2015 active-semi, inc. act2813/act2813c parameter test conditions min typ max unit soft-startup time 400 s under voltage protection (uvp threshold) vout falling 4.25 v vout rising 4.6 v uvp blanking time during startup 3 ms uvp sense detection time vout falling 20 s restart after uvp hiccup mode 2 s light load current shut off threshold vbat=3.7v, rcs=25m ? ,r iost =91k ? 40 100 ma light load current detect time 16 s hz pin high voltage hz voltage rising 0.9 1.4 v hz pin low voltage hz voltage falling 0.4 0.75 v hz internal pull-up resistor 3 m ? pb turn off boost time act2813 1.5 s pb turn on boost time 30 ms mode transition transition waiting time between charge mode and boost mode trantime 2 s battery level indication battery impedance compensation range 40 500 m ? battery impedance compensation rcs=25m ? , r imc = 200k ? 200 m ? pb deglitch time 30 ms pb high input voltage pb voltage rising 0.9 1.4 v pb low input voltage pb voltage falling 0.4 0.75 v pb internal pull-up resistor 3 m ? led indication time pb is pushed and released 5 s led flash frequency charging, led flash 1s on and 1s off 0.5 hz flashlight driver current act2813c, the current at fld pin 50 ma pb turn on flashlight time act2813c 3.0 s pb turn off flashlight time act2813c 3.0 s flashlight driver electrical characteristics (v in = 5v, t a = 25c, unless otherwise specified.) rev 2, 19-may-15 innovative power tm - 8 - www.active-semi.com copyright ? 2015 active-semi, inc. act2813/act2813c functional block diagram for act2813 functional block diagram for act2813c rev 2, 19-may-15 innovative power tm - 9 - www.active-semi.com copyright ? 2015 active-semi, inc. act2813/act2813c functional description act2813/act2813c is a complete battery charging and discharging power management solution for applications of single-cell lithium-based backup battery pack or power bank. there is a power path from input to output. if output voltage drops below 4.25v, the input switch q1 turns off and restart in 2 seconds. with the advanced act2813/act2813c architecture, a synchronous buck/boost converter is connected from vout to switching node (sw). with the bidirectional architectu re, the converter could be configured as either buck to charge battery or boost to discharge battery. with switching charger and discharger, the higher charge current and higher conversion efficiency are achieved. modes of operation act2813/act2813c has 3 operation modes: charge mode, boost mode and high-impedance (hz) mode. in charge mode, the input current limit q1 is enabled and q2 and q3 operate as a buck converter to charge battery. in boost mode, q2 and q3 operate as boost converter to step battery voltage up to +5v at vout, and the current limit switch q1 is turned off, and the reverse current from vout to vin is blocked. in hz mode, all the switches are turned off and the drainage current from battery is very low. act2813 system operation flow chart as shown in figure 1 and act2813c system operation flow char t as shown in figure 2. any transitions between boost mode and charge mode go through hz mode by turning off all the switches q1-q3 into hz mode for 2 seconds before enabling the other mode. the modes are determined by hz pin and vin pin as shown in the table 1. a valid vin voltage forces act2813/act2813c into charge mode. boost mode is enabled if hz pin is pulled low and vin is invalid or not present. when hz=0, if pb is pulled low for more than 30ms, boost converter is enabled. for act2813, a running boost is disabled if one of the following conditions is met: 1. boost converter output current is below light load threshold for 16 seconds. 2. battery voltage falls below the boost cut-off threshold. 3. after pb is released, if pb is pulled low for more than 1.5 seconds. flashlight act2813c has an flashlight function. once pb is pressed for more than 3 seconds, the flashlight is switched on. the driver will deliver up to 50ma current to the flashlight. during flashlight on , if pb is pressed for 3 seconds , flashlight will be switched off. table 1: mode selection hz pin 0 0 1 1 vin valid 0 1 0 1 mode boost charge hz charge figure 1: act2813 system operation flow chart rev 2, 19-may-15 innovative power tm - 10 - www.active-semi.com copyright ? 2015 active-semi, inc. act2813/act2813c figure 2: act2813c system operation flow chart latch-off act2813/act2813c has latch off function. if discharging stops due to battery cut-off, and latch off will be triggered, it would prevent battery from discharging again, latch-off is released when input power is recycled. switching battery charger act2813/act2813c is configured in charge mode (buck mode) when vin is valid. in this mode, the battery is charged with preconditioning, fast charge, top-off and end of charge (e oc). the typical charge management is shown in figure 3 and figure 4. cc/cv regulation loop there are cc/cv regulation loops built in act2813/ act2813c, which regulates either current or voltage as necessary to ensure fast and safe charging of the battery. in a normal charge cycle, this loop regulates the current to the value set by the external resistor at the icst pin. charging continues at this current until the battery cell voltage reaches the termination voltage. at this point the cv loop takes over, and charge current is allowed to decrease as necessary to maintain charging at the termination voltage. precondition charge a new charging cycle begins with the precondition state, and operation continues in this state until v bat exceeds the precondition threshold voltage. when operating in precondition stat e, the cell is charged at a reduced current, 10% of the programmed maximum fast charge constant current. once v bat reaches the precondition threshold voltage the state machine jumps to the fast charge state. fast charge if battery voltage is above preconditioning threshold, buck converter charges battery with constant current. in fast charge state, the act2813/ act2813c charges at the current set by the external resistor connected at the icst pin . during a normal charge cycle fast charge continues in cc mode until v bat reaches the charge termination voltage, at which point the act2813/act2813c charges in top off state. top off with the battery voltage approaches the eoc voltage, charge current decreases as charging continues. in the top off state, the cell is charged in constant voltage (cv) mode. during a normal charging cycle charging proceeds until the charge current decreases below the end of charge (eoc) threshold, defined as 15% of fast charge current. when this happens, the state machine terminates the charge cycle and jumps to the eoc state. end of charge when charges current decreases to 15% of set fast ? charge current, the buck converter goes into end of charge mode and keep monitoring the battery voltage. rev 2, 19-may-15 innovative power tm - 11 - www.active-semi.com copyright ? 2015 active-semi, inc. act2813/act2813c a: precondition state b: fast-charge state c: top-off state d: end-of-charge state figure 3. typical li+ charge profile and act2813/act2813c charge states figure 4. charger state diagram recharge when battery voltage drops by 200mv below the end of ch arge voltage, the charger is reinitiated with con- stant current charge. rev 2, 19-may-15 innovative power tm - 12 - www.active-semi.com copyright ? 2015 active-semi, inc. act2813/act2813c applications information battery level voltage shift (blvs pin) led1-4 voltage thresholds are adjusted from hz mode during charging and discharging based on the compensated impedance. those thresholds are programmed by a resistor connected from blvs pin to agnd as shown in figure 5. the following equation shows the led4 voltage threshold: as long as led4 is set, all the other 3 led thresholds is fixed as shown in the table 2: table 2: 4 led voltage thresholds led status indication 4 leds on/off and flash show the charge status and the remained capacity level as shown in the table 3. the led status is based on battery voltage and operation modes. when battery voltage is low, led1 is flashing. in charge mode, when a battery is fully charged, flashing stops and all the 4 leds are solid on. fast charge current battery fast charge current is set by a resistor connected from icst pin to agnd as shown in figure 6. the battery fast charge current is estimated as the following equation: figure 7 gives out different fast charge current with various r icst . charge mode pb time>30ms (boost or hz mode) led led1 led2 led3 led4 led1 led2 led3 led4 2.9v vbat rev 2, 19-may-15 innovative power tm - 14 - www.active-semi.com copyright ? 2015 active-semi, inc. act2813/act2813c input over voltage surge in the case of pure ceramic input capacitor is chosen, if the input cable is long, stray inductance may cause over voltage spikes as twice as the steady-state voltage when input source is plugged in. below input circuit is recommended to avoid input voltage surge. r1 resistor is added in series with capacitor c1 to damp the potential lc resonance as shown in figure 14. inductor and capacitor selection act2813/act2813c supports smd components. 2.2uh inductor is recommended. input side, 4.7uf ceramic capacitor in series with 2.7 ? resistor are recommended, on battery side, 22uf ceramic capacitors is recommended while on output side, 22ufx3 ceramic capacitors are recommended. battery temperature monitoring act2813 continuously monitors the temperature of the battery pack by sensing the resistance of its thermistor, and suspends charging if the temperature of the battery pack exceeds the safety limits. in a typical application, the th pin is connected to the battery pack's thermistor input as shown in figure 15. the act2813 injects a 60a current out of the th pin into the thermistor, so that the thermistor resistance is monitored by comparing the voltage at th to the internal v thl and v thh thresholds of 0.3v and 1.5v, respectively. when v th > v thh or v th < v thl charging and the charge timers are suspended. when v th returns to the normal range, charging and the charge timers resume. the threshold is given by: 60ar nom k hot =0.3v r nom k hot =5k ? 60ar nom k cold =1.5v r nom k cold = 25k ? where r nom is the nominal thermistor resistance at room temperature, and k hot and k cold are the ratios of the thermistor's resistance at the desired hot and cold thresholds, respectively. figure 14. input over voltage surge protection circuit figure 15. battery thermal circuit rev 2, 19-may-15 innovative power tm - 15 - www.active-semi.com copyright ? 2015 active-semi, inc. act2813/act2813c when laying out the printed circuit board, the following checklist should be used to ensure proper operation of the ic. 1. arrange the power components to reduce the ac loop size, vin pin, vout pin, sw pin and the schottky diode. 2. place input decoupling ceramic capacitor c1 and r9 as close to vin pin as possible. resistor r9 is added in series with capacitor c1 to damp the potential lc resonance . 3. use copper plane for power gnd for best heat dissipation and noise immunity. 4. place csp and csn capacitor c7 (10nf) close to csp and csn pin as possible, use kevin sense from sense resistor r1 and r2 to csp and csn pins. 22uf decoupling capacitor is added close to vbat pin. 5. place the ceramic capacitor c2 and d1 as close to vout and pgnd as possible, sw goes under the c2 (recommend c2 to use 1206 size). sw pad is a noisy node switching. it should be isolated away from the rest of circuit for good emi and low noise operation. 6. rc snubber is recommended to add across sw to pgnd to reduce emi noise. a demo board pcb layout exam ple is shown in the figure 16. top layer figure 16. pcb layout bottom layer pc board layout guidance rev 2, 19-may-15 innovative power tm - 16 - www.active-semi.com copyright ? 2015 active-semi, inc. act2813/act2813c figure 17. act2813 typical application circuit (fast charge current set is 2.4a, boost out put constant current set is 2.66a) led1 led2 led3 led4 rev 2, 19-may-15 innovative power tm - 17 - www.active-semi.com copyright ? 2015 active-semi, inc. act2813/act2813c item reference description qty manufacturer 1 l1 core, 6.5*3*3 dip, 2.2uh, 6a, rdson=5m ? 1 sunlord 2 q1 ao4503, rdson=19m ? at vgs = - 4.5 v 1 aos 3 q2 mmbt3906 1 vishay 4 d1 sbr3u20sa, 20v/3a schottky mbra210lt3g, 10v/2a schottky 1 diodes on-semi 5 d2 1n4148, vf=0.7v, 75v schottky 1 vishay 6 c1 ceramic capacitor, 4.7uf/10v, x7r, 0805 1 murata/tdk 7 c2,c3,c4,c9 ceramic capacitor, 22uf/10v, x7r, 1206 4 murata/tdk 8 c5,c6 ceramic capacitor, 2.2uf/10v, x7r, 0603 2 murata/tdk 9 c7 ceramic capacitor, 10nf/10v, x7r, 0603 1 murata/tdk 10 c8 ceramic capacitor, 0.1uf/10v, x7r, 0603 1 murata/tdk 12 c11 ceramic capacitor, 4.7nf/10v, x7r, 0603 1 murata/tdk 13 r1,r2 chip resistor, 50m ? , 1/4w, 1%, 1206 2 murata/tdk 14 r3,r10 chip resistor, 100k ? , 1/10w, 1%, 0603 2 murata/tdk 15 r4 chip resistor, 48k ? , 1/10w, 1%, 0603 1 murata/tdk 16 r5 chip resistor, 68k ? , 1/10w, 5%, 0603 1 murata/tdk 17 r6 chip resistor, 60.4k ? , 1/10w, 1%, 0603 1 murata/tdk 18 r7,r8,r12 chip resistor, 0 ? , 1/10w, 1%, 0603 3 murata/tdk 19 r9 chip resistor, 2.7 ? , 1/8w, 1%, 0805 1 murata/tdk 20 r13 chip resistor, 100 ? , 1/10w, 1%, 0603 1 murata/tdk 21 r15 chip resistor, 715k ? , 1/10w, 5%, 0603 1 murata/tdk 22 r16,r19 chip resistor, 200k ? , 1/10w, 5%, 0603 2 murata/tdk 24 r18 chip resistor, 0.47 ? , 1/4w, 1%, 1206 1 murata/tdk 25 r20,r22 chip resistor, 43.2k ? , 1/10w, 1%, 0603 2 murata/tdk 26 r21,r23 chip resistor, 49.9k ? , 1/10w, 1%, 0603 2 murata/tdk 27 led1,led2 led3,led4 led, 0603, blue 4 led manu 28 pb push button 1 led manu 29 usb 10.2*14.6*7mm, 4p, dip 1 30 micro-usb micro usb 5p/f smt b 1 31 u1 ic, act2813, fcqfn 4x4-20 1 act 23 r17 chip resistor, 10k ? , 1/10w, 5%, 0603 1 murata/tdk 11 c10 ceramic capacitor, 10uf/10v, x7r, 0805 1 murata/tdk table 5: bom list rev 2, 19-may-15 innovative power tm - 18 - www.active-semi.com copyright ? 2015 active-semi, inc. act2813/act2813c figure 18. act2813c typical application circuit (fast charge current set is 2.4a, boost out put constant current set is 2.66a) led1 led2 led3 led4 rev 2, 19-may-15 innovative power tm - 19 - www.active-semi.com copyright ? 2015 active-semi, inc. act2813/act2813c item reference description qty manufacturer 1 l1 core, 6.5*3*3 dip, 2.2uh, 6a, rdson=5m ? 1 sunlord 2 q1 ao4503, rdson=19m ? at vgs = - 4.5 v 1 aos 3 q2 mmbt3906 1 vishay 4 d1 sbr3u20sa, 20v/3a schottky mbra210lt3g, 10v/2a schottky 1 diodes on-semi 5 d2 1n4148, vf=0.7v, 75v schottky 1 vishay 6 c1 ceramic capacitor, 4.7uf/10v, x7r, 0805 1 murata/tdk 7 c2,c3,c4,c9 ceramic capacitor, 22uf/10v, x7r, 1206 4 murata/tdk 8 c5,c6 ceramic capacitor, 2.2uf/10v, x7r, 0603 2 murata/tdk 9 c7 ceramic capacitor, 10nf/10v, x7r, 0603 1 murata/tdk 10 c8 ceramic capacitor, 0.1uf/10v, x7r, 0603 1 murata/tdk 12 c11 ceramic capacitor, 4.7nf/10v, x7r, 0603 1 murata/tdk 13 r1,r2 chip resistor, 50m ? , 1/4w, 1%, 1206 2 murata/tdk 14 r3,r10 chip resistor, 100k ? , 1/10w, 1%, 0603 2 murata/tdk 15 r4 chip resistor, 48k ? , 1/10w, 1%, 0603 1 murata/tdk 16 r5 chip resistor, 68k ? , 1/10w, 5%, 0603 1 murata/tdk 17 r6 chip resistor, 60.4k ? , 1/10w, 1%, 0603 1 murata/tdk 18 r7,r8,r12 chip resistor, 0 ? , 1/10w, 1%, 0603 3 murata/tdk 19 r9 chip resistor, 2.7 ? , 1/8w, 1%, 0805 1 murata/tdk 21 r13 chip resistor, 100 ? , 1/10w, 1%, 0603 1 murata/tdk 22 r15 chip resistor, 715k ? , 1/10w, 5%, 0603 1 murata/tdk 23 r16,r19 chip resistor, 200k ? , 1/10w, 5%, 0603 2 murata/tdk 24 r18 chip resistor, 0.47 ? , 1/4w, 1%, 1206 1 murata/tdk 25 r20,r22 chip resistor, 43.2k ? , 1/10w, 1%, 0603 2 murata/tdk 26 r21,r23 chip resistor, 49.9k ? , 1/10w, 1%, 0603 2 murata/tdk 27 led1,led2 led3,led4 led, 0603, blue 4 led manu 29 pb push button 1 30 usb 10.2*14.6*7mm, 4p, dip 1 31 micro-usb micro usb 5p/f smt b 1 32 u1 ic, act2813c, fcqfn 4x4-20 1 act 20 r11 chip resistor, 51 ? , 1/8w, 1%, 0805 1 murata/tdk 28 led5 flashlight 1 led manu 11 c10 ceramic capacitor, 22uf/10v, x7r, 0805 1 murata/tdk table 5: bom list rev 2, 19-may-15 innovative power tm - 20 - www.active-semi.com copyright ? 2015 active-semi, inc. act2813/act2813c typical performance ch aracteristics cont?d (schematic as show in figure 17, ta = 25c, unless otherwise specified) act2813/act2813c-001 charge current (ma) 2500 2000 1500 1000 500 0 voltage (v) 4.2 4.4 4.6 4.8 5.0 5.2 act2813/act2813c-002 charge current (ma) 3000 2000 1500 1000 500 0 2500 battery voltage (v) 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 act2813/act2813c-003 charge efficiency efficiency(%) 91 . 5 91.0 90.5 90.0 89.5 89.0 88.5 battery voltage (v) 3.0 3.2 3.4 3.6 3.8 4.0 4.2 act2813/act2813c-005 battery charge current vs. temperature battery charge current (ma) 3000 2000 1500 1000 500 0 2500 temperature (c) -20 0 20 40 60 80 100 120 140 act2813/act2813c-004 boost efficiency efficiency(%) 100.0 90.0 80.0 70.0 60.0 50.0 40.0 output current (ma) 0 500 1000 1500 2000 2500 act2813/act2813c-006 battery leakage (ua) 25.0 20.0 15.0 10.0 5.0 0 temperature (c) -20 0 20 40 60 80 120 100 battery leakage vs. temperature (hz mode) v bat = 3.7v v in = 5.0v i chrg = 2.4a v in = 5.0v i chrg = 2.4a v in = 5.0v v bat = 3.5v battery charge v/i profile weak input source v bat = 3.7v v bat = 4.1v v bat = 3.2v v in = 5.0v i chrg = 2.4a v in v out rev 2, 19-may-15 innovative power tm - 21 - www.active-semi.com copyright ? 2015 active-semi, inc. act2813/act2813c typical performance ch aracteristics cont?d (schematic as show in figure 17, ta = 25c, unless otherwise specified) act2813/act2813c-007 act2813/act2813c-008 boost output voltage vs. temperature boost output voltage (v) 5.4 5.3 5.2 5.1 5.0 4.9 4.8 temperature (c) -30 0 30 60 90 120 150 boost output constant current limit vs. temperature boost output constant current (ma) 2800 2600 2400 2200 2000 1800 3000 temperature (c) -20 0 20 40 60 120 140 80 100 boost output voltage vs. output current act2813/act2813c-009 boost output voltage (v) 5.1 5.06 5.02 4.98 4.94 4.9 boost output current (ma) 0 500 1000 1500 2000 2500 3000 v bat = 3.2v v bat =4.1v act2813/act2813c-011 boost standby current vs. battery voltage standby current (ma) 057 0.55 0.53 0.51 0.49 0.47 0.45 battery voltage (v) 3.0 3.3 3.6 3.9 4.2 45 4.8 act2813/act2813c-012 battery leakage (a) 8.0 5.0 4.0 3.0 2.0 1.0 0 7.0 6.0 battery voltage (v) 0 1.0 2.0 3.0 4.0 5.0 battery leakage vs. battery voltage (hz mode) act2813/act2813c-010 boost output constant current limit vs. v bat boost output constant current ma) 2800 2700 2650 2600 2550 2500 2750 battery voltage (v) 3.0 3.2 3.4 3.6 3.8 4.0 4.2 v bat = 3.7v i ost =2.66a cv= 4.5v v bat = 3.5v v out = 5.05v rev 2, 19-may-15 innovative power tm - 22 - www.active-semi.com copyright ? 2015 active-semi, inc. act2813/act2813c typical performance ch aracteristics cont?d ch1 ch2 act2813/act2813c-017 v in = 5.0v v bat = 4.1v (schematic as show in figure 17, ta = 25c, unless otherwise specified) ch3 ch1: v in , 5v/div ch2: v npg , 5v/div ch3: vout, 2v/div time: 1s/div boost load transient (80ma-1a-80ma) ch1 ch2 v bat = 3.7v v out = 5.0v i iost = 2.66a boost load transient (1a-2.4a-1a) act2813/act2813c-014 ch1 ch2 v bat = 4.2v v out = 5.0v i iost = 1.3a act2813/act2813c-013 ch1: v out , 200mv/div ch2: i out , 1a/div time: 400s/div ch1: v out , 100mv/div ch2: i out , 1a/div time: 400s/div v bat = 3.7v v out = 5.0v i iost = 2.66a act2813/act2813c-016 v bat = 4.1v v out = 5.0v i out = 2.4a ch1 ch2 act2813/act2813c-015 v bat = 3.4v v out = 5.0v i out = 1.0a ch1 ch2 ch1: v out , 20mv/div ch2: v sw , 2v/div time: 1s/div v bat = 3.4v v out = 5.0v i out = 2.4a transition between buck mode and boost mode sw and output waveforms in boost mode sw and output waveforms in boost mode ch1: v out , 20mv/div ch2: v sw , 2v/div time: 1s/div v in = 5.0v v bat = 4.1v v in v npg v out rev 2, 19-may-15 innovative power tm - 23 - www.active-semi.com copyright ? 2015 active-semi, inc. act2813/act2813c package outline fcqfn 4x4-20 package outline and dimensions active-semi, inc. reserves the right to modify the circuitry or specifications without notice. user s should evaluate each product to make sure that it is suitable for their applicat ions. active-semi products are not intended or authorized for use as critical components in life-support dev ices or systems. active-semi, inc. does not assume any liability arising out of the use of any product or circuit described in this datasheet, nor does it convey any patent license. active-semi and its logo are trademarks of active-semi, inc. for more information on this and other products, contact sales@active-semi.com or visit http://www.active-semi.com . is a registered trademark of active-semi. symbol dimension in millimeters dimension in inches min max min max a 0.800 0.900 0.031 0.035 a1 ?- 0.050 ?- 0.002 a3 0.203 ref 0.008 ref b 0.200 0.300 0.008 0.012 d 3.950 4.050 0.156 0.159 d2 0.750 0.850 0.030 0.033 e 0.500 bsc 0.020 bsc e 3.950 4.050 0.156 0.159 e2 0.950 1.050 0.037 0.041 l1 0.450 0.550 0.018 0.022 l2 0.950 1.050 0.037 0.041 l3 1.050 1.150 0.041 0.045 l4 1.200 1.300 0.047 0.051 d1 1.550 1.650 0.061 0.065 e1 1.450 1.550 0.057 0.061 |
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