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MP20056 low-noise, high-psrr, 250ma linear regulator MP20056 rev.1.1 www.monolithicpower.com 1 12/17/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. the future of analog ic technology description the MP20056 is a low-dropout linear regulator that supplies up to 250ma current with a 100mv dropout voltage and can operate from 2.5v to 5.5v input. the output voltage is preset at 1.8v, 2.5v or 3.3v for the two different packages. an external resistor divider can adjust the output voltage from 0.8v to 5v. an internal pmos pass element allows for a low 150 a ground current, making the MP20056 suitable for battery-powered devices. other features include low-power shutdown, short- circuit protection, and thermal protection. the MP20056 is available in a 2mm2mm 8-pin qfn and a 5-pin tsot23-5 packages. features ? up to 250ma output current ? low 100mv dropout at 250ma ? low 150 a ground current ? low noise: 13 v rms typical (10hz to 100khz) ? 63db psrr @1khz ? stable with ceramic capacitor ? excellent load/line transient response ? current limiting and thermal protection ? fixed output voltage 1.8v and 3.3v. ? adjustable output voltage from 0.8v to 5v using an external resistor divider applications ? notebook computers ? cordless phones ? cellular phones ? wireless communication equipment ? hand-held instruments all mps parts are lead-free, halogen free, and adhere to the rohs directive. for mps green status, please visit mps website under quality assurance. ?mps? and ?the future of analog ic technology? are registered trademarks of monolithic power systems, inc. typical application
MP20056 ? low-noise, high-psrr, 250ma linear regulator MP20056 rev.1.1 www.monolithicpower.com 2 12/17/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. ordering information part number package top marking MP20056gg-18* qfn-8(2mmx2mm) see below MP20056gj-33** tsot23-5 see below MP20056gg-33 qfn-8(2mmx2mm) see below MP20056gj-25 tsot23-5 see below *for tape & reel, add suffix ?z (e.g. MP20056gg-18?z); **for tape & reel, add suffix -z(e.g MP20056gj-33-z); top marking (MP20056gg-18) bk: product code of MP20056gg-18; y: year code; lll: lot number; top marking (MP20056gj-33) aft: product code of MP20056gj-33; y: year code; top marking (MP20056gg-33) bv: product code of MP20056gg-33; y: year code; lll: lot number;
MP20056 ? low-noise, high-psrr, 250ma linear regulator MP20056 rev.1.1 www.monolithicpower.com 3 12/17/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. top marking (MP20056gj-25) ala: product code of MP20056gj-25; y: year code; package reference top view gnd en in in 1 2 3 4 fb nc out out 8 7 6 5 exposed pad on backside connect to gnd marking top view in gnd en 1 2 3 5 4 out fb qfn8 (2 x 2mm) tsot23-5 absolute maxi mum ratings (1) vin, en, fb to gnd .......................-0.3v to +6v out to gnd ...................... -0.5v to (v in + 0.5v) continuous power dissipation ......(t a =25c) (2) qfn8 (2x2mm)................................................1.6w tsot23-5 ..................................................... 0.57w junction temperature ...............................150c storage temperature range ..... -65c to 150c lead temperature (soldering, 10sec)........... 260c esd susceptibility (3) hbm (human body mode).......................... 2kv mm (machine mode) ................................. 200v recommended operating conditions (4) supply input voltage.......................2.5v to 5.5v enable input voltage .........................0v to 5.5v operating junction temp. (t j ). -40c to +125c thermal resistance (5) ja jc qfn-8 (2mmx2mm) ................80 ...... 16 ... c/w tsot23-5 ..............................220 .... 110 .. c/w notes: 1) exceeding these ratings may damage the device. 2) the maximum allowable power dissipation is a function of the maximum junction temperature t j (max), the junction-to- ambient thermal resistance ja , and the ambient temperature t a . the maximum allowable continuous power dissipation at any ambient temperature is calculated by p d (max) = (t j (max)-t a )/ ja . exceeding the maximum allowable powe r dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. internal thermal shutdown circuitry protects the device from permanent damage. 3) devices are esd sensitive. handling precaution recommended. 4) the device is not guaranteed to function outside of its operating conditions. 5) measured on jesd51-7, 4-layer pcb.
MP20056 ? low-noise, high-psrr, 250ma linear regulator MP20056 rev.1.1 www.monolithicpower.com 4 12/17/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. electrical characteristics v in =v out +0.5v or v in =2.5v, en=v in , v out =1.8v or 3.3v. typical values are at t j =25c, unless otherwise specified. parameter condition min typ max units input voltage 2.5 5.5 v input under-voltage lockout v in rising, v out =1.8v 1.95 2.3 v hysteresis of uvlo 160 mv fb voltage v out =0.8v, i out =1ma, tj=25c 0.784 0.8 0.816 v output voltage accuracy i out =1ma, t j =25c -2 2 % maximum output current continuous 250 ma short-circuit current limit v out =0, v in 2.5v 350 550 850 ma in-regulation current limit v out within 4% of normal output voltage v in =5.5v 300 550 800 ma i out =0.1ma 150 250 ground current i out =250ma 220 330 a dropout voltage (6) i out =250ma, v out =3.3v, t j =25c 100 150 mv line regulation (7) v in from v out +0.5v or 2.5v to 5.5v, i out =100ma, -0.15 0.15 %/v v out =1.8v, 3.3v -0.3 0.3 load regulation (8) i out from 100ma to 250ma v out =2.5v -0.4 0.4 % v out =1.8v 20 v out =3.3v 35 output-voltage noise (9) i out =100ma, f ranges from 10hz to 100khz v out =5v 55 v rms f=100hz 65 f=1khz 63 f=10khz 63 psrr (9) v out = 1.8v, 2.5v, 3.3v i out = 250ma f=1mhz 33 db shutdown supply current v in =+5.5v, t j =25c 0.1 0.3 a en pin current , enabled v in =v en =+5.5v 0.1 0.3 a v out =1.8v 100 300 startup time c out =4.7 f, v out =10% to 90%v out(nom) v out =3.3v, 2.5v 100 450 s en logic high 1.5 en pin threshold en logic low 0.4 v thermal shutdown (9) 150 c thermal shutdown hysteresis (9) 20 c notes: 6) dropout voltage is defined as the input to output different ial when the output voltage drops 100mv below its nominal value. 7) line regulation= ?? in(max ) in(min) out v out v in(min) out(nom) in max vv (% / v) vv v ?? ?? ?? ?? ? ? ?? ?? ?? 8) load regulation= ?? out(max ) out(min) out i out i out nom vv (%) v ?? ?? ?? ?? ? ? 9) design guarantee, no test in production
MP20056 ? low-noise, high-psrr, 250ma linear regulator MP20056 rev.1.1 www.monolithicpower.com 5 12/17/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. pin functions pin # qfn-8 (2mmx2mm) pin # tsot23-5 name pin function 1, exposed pad 2 gnd ground. connect exposed pad to gnd plane for optimal thermal performance. 2 3 en regulator enable control input. drive en above 1.5v to turn on the MP20056. drive en below 0.4v to turn it off. do not float the en pin. 3, 4 1 vin regulator input. supply voltage ranges from 2.5v to 5.5v. bypass with a 2.2 f capacitor. these pins must be externally connected for proper operation even if they are internally connected. 5, 6 5 vout regulator output. bypass with a standard 4.7 f ceramic capacitor to gnd. connect all the pins together externally. 7 nc no connection. leave this nc pin open. 8 4 fb feedback input. connect fb to the cent er point of the external resistor divider. the feedback threshold voltage is 0.8v.
MP20056 ? low-noise, high-psrr, 250ma linear regulator MP20056 rev.1.1 www.monolithicpower.com 6 12/17/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. typical performanc e characteristics v in =2.5v/3.7v, v out =1.8v/3.3v, t a =25oc unless otherwise noted. -1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 0 100 200 300 400 500 1.60 1.66 1.72 1.78 1.84 1.90 2.0 2.6 3.2 3.8 4.4 5.0 5.6 0 50 100 150 200 250 300 0 100 200 300 400 500 3.20 3.25 3.30 3.35 3.40 0 80 160 240 320 400 3.20 3.24 3.28 3.32 3.36 3.40 3.5 3.9 4.3 4.7 5.1 5.5 3.0 3.1 3.2 3.3 3.4 3.5 3.6 -40 -10 20 50 80 110 140 100 120 140 160 180 200 -40 -10 20 50 80 110 140 0.60 0.66 0.72 0.78 0.84 0.90 -40 -10 20 50 80 110 140 400 460 520 580 640 700 -40 -10 20 50 80 110 140
MP20056 ? low-noise, high-psrr, 250ma linear regulator MP20056 rev.1.1 www.monolithicpower.com 7 12/17/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. typical performanc e characteristics (continued) v in =2.5v, v out =1.8v, t a =25oc unless otherwise noted. v in 2v/div. v out 1v/div. i out 0.5a/div. v in 5v/div. v out 1v/div. i out 0.5a/div. v in 2v/div. v out 10mv/div. i out 0.1a/div. v en 2v/div. i in 0.5a/div. i in 0.5a/div. v in 2v/div. v out 2v/div. i out 0.5a/div. v en 2v/div. v in 2v/div. v out 2v/div. i out 0.5a/div. v in 2v/div. v out 1v/div. v in 2v/div. v out 1v/div. i out 0.5a/div. v in 2v/div. v out 1v/div. i out 0.5a/div. v in 2v/div. v out 1v/div.
MP20056 ? low-noise, high-psrr, 250ma linear regulator MP20056 rev.1.1 www.monolithicpower.com 8 12/17/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. typical performanc e characteristics (continued) v in =3.7v, v out =3.3v, t a =25oc unless otherwise noted. v in 2v/div. v out 2v/div. i out 0.5a/div. v in 5v/div. v out 2v/div. i out 0.5a/div. v in 2v/div. v out 20mv/div. i in 0.1a/div. v en 2v/div. i in 0.5a/div. i out 0.5a/div. v in 2v/div. v out 2v/div. i out 0.5a/div. v en 2v/div. v in 2v/div. v out 2v/div. i out 0.5a/div. v in 2v/div. v out 2v/div. v in 2v/div. v out 2v/div. i out 0.5a/div. v in 2v/div. v out 2v/div. i out 0.5a/div. v in 2v/div. v out 2v/div.
MP20056 ? low-noise, high-psrr, 250ma linear regulator MP20056 rev.1.1 www.monolithicpower.com 9 12/17/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. typical performanc e characteristics (continued) t a =25oc, unless otherwise noted.
MP20056 ? low-noise, high-psrr, 250ma linear regulator MP20056 rev.1.1 www.monolithicpower.com 10 12/17/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. functional block diagram figure 1: functional block diagram
MP20056 ? low-noise, high-psrr, 250ma linear regulator MP20056 rev.1.1 www.monolithicpower.com 11 12/17/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. operation the MP20056 is a low-dropout linear regulator that can supply up to 250ma current, which makes it suitable for very low voltage, low quiescent, low noise, and high psrr applications, such as wireless lan transceivers, notebook computers, smartphones, and other low-power electronics. the MP20056 uses an internal pmos as the pass element and includes both thermal shutdown and an internal current-limiting circuit. dropout voltage dropout voltage is the minimum input to output differential voltage required for the regulator to maintain an output voltage within 100mv of its nominal value. because the pmos pass element behaves as a low-value resistor. shutdown the MP20056 can be switched on or off by a logic input at the en pin: logic high turns the regulator on and logic low turns it off. tie the en pin to vin if the application does not require the shutdown feature. do not float the en pin. current limit the MP20056 includes a current limit structure that monitors and controls the pmos gate voltage to limit the guaranteed maximum output current to 0.4a. thermal protection thermal protection turns off the pmos when the junction temperature exceeds 150c, allowing the ic to cool. when the ic?s junction temperature drops by 20 c, the pmos will turn on again. thermal protection limits total power dissipation in the MP20056. for reliable operation, limit the junction temperature to a maximum of 125c. load-transient considerations the output response of the load-transient consists of a transient response and dc shift? the MP20056?s excellent load regulation effectively limits the dc shift. the output voltage transient depends on the output capacitor?s value and esr. increasing the capacitance and decreasing the esr will improve the transient response.
MP20056 ? low-noise, high-psrr, 250ma linear regulator MP20056 rev.1.1 www.monolithicpower.com 12 12/17/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. application information setting the output voltage the output voltage of the mpq20055 is preset to 1.8v, 2.5v or 3.3v by internal resistor divider. the output voltage also can be adjusted by using an external resistor divider (r1 and r2 in figure 2). MP20056 r1 r2 vout fb gnd figure 2: setting the output voltage however, the sum of r1 and r2 should not exceed 10k ? to minimize their impact on the internal resistor divider. for an accurate output- voltage setting, use 1k ? (1%) for r2, and determine r1 with: ? ? ? ? ? ? ? ? ? ? ? fb fb out v v v 2 r 1 r for example, for a 1.1v output voltage, r2 is 1k ? , and r1 is 374 ? . you can select a standard 374 ? (1%) resistor for r1. power dissipation the power dissipation for any package depends on the thermal resistance of the case and circuit board, the temperature differential between the junction and ambient air, and the rate of air flow. the power dissipation across the device can be represented by the equation: ?? out out in i v v p ? ? ? the allowable power dissipation can be calculated using the following equation: ? ? ja ambient junction (max) t t p ? ? ? / where (t junction ? t ambient ) is the temperature differential between the junction and the surrounding environment, ja is the thermal resistance from the junction to the ambient environment. connecting the exposed gnd pad to a large ground pad or plane helps to channel away heat. output capacitor selection the MP20056 is specifically designed to work with a standard ceramic output capacitor to save space and improve performance. use a 4.7f ceramic capacitor for most applications. larger output capacitors will improve load transient response and reduce noise at the cost of increased size.
MP20056 ? low-noise, high-psrr, 250ma linear regulator MP20056 rev.1.1 www.monolithicpower.com 13 12/17/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. typical application circuits vin gnd en vin 2.2v - 5.5v r3 100k 3 1 2 8 5 6 in in nc en fb gnd out out u1 MP20056-g 1.8v c3 470pf vout gnd 4 7 figure 3: 1.8v fixed output application (qfn-8l) vin gnd en vin 3.7v - 5.5v r1 100k 1 2 3 4 5 in en fb gnd out u1 MP20056-j 3.3v c3 ns vout gnd figure 4: 3.3v fixed output application (tsot23-5l) MP20056 figure 5: 2.5v fixed output application (tsot23-5l)
MP20056 ? low-noise, high-psrr, 250ma linear regulator MP20056 rev.1.1 www.monolithicpower.com 14 12/17/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. package information qfn-8 (2mm 2mm) top view 1 8 54 bottom view 1.90 2.10 0.45 0.65 1.90 2.10 1.05 1.25 0.50 bsc 0.18 0.30 pin 1 id marking 0.60 0.50 0.25 recommended land pattern 1.90 note: 1) all dimensions are in millimeters. 2) exposed paddle size does not include mold flash. 3) lead coplanarity shall be 0.10 millimeter max. 4) drawing conforms to jedec mo-229, variation vccd-3. 5) drawing is not to scale. pin 1 id see detail a 0.70 pin 1 id option a r0.20 typ. pin 1 id option b r0.20 typ. detail a 0.25 0.45 pin 1 id index area side view 0.00 0.05 0.80 1.00 0.20 ref 1.20
MP20056 ? low-noise, high-psrr, 250ma linear regulator notice: the information in this document is subject to change wi thout notice. please contact m ps for current specifications. users should warrant and guarantee that third party intellectual property rights ar e not infringed upon when integrating mps products into any application. mps will not assume any legal responsibility for any said applications. MP20056 rev.1.1 www.monolithicpower.com 15 12/17/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. package information tsot23-5

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