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mp20142 dual channel, 200ma linear regulator with programmable output voltage and output discharge mp20142 rev.0.9 www.monolithicpower.com 1 7/12/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. the future of analog ic technology description the mp20142 is a dual-channel, low noise, low dropout and high psrr linear regulator with programmable output voltage. the output voltage of mp20142 ranges from 1.2v to 3.3v in 100mv increments and 2.5% accuracy by operating from a +2.5v to +5.5v input. the different output voltage options can be programmed by setting the voltage of p1 and p2 to vdd, gnd or floating. there are 9 different voltage settings in one chip. each output channel can supply up to 200ma of load current. the mp20142 uses two internal p-channel mosfets as the pass devices, which consumes 150a supply current when both channels are enabled at no load condition. the en1 and en2 pins control each output respectively. when both channels shutdown simultaneously, the chip turns off and consumes nearly zero operation current which is suitable for battery-power devices. the mp20142 also features current limiting, output discharge and over temperature protection. it is available in a tqfn8 (2mm2mm) package. features ? programmable output voltage ? up to 200ma output current (each ldo) ? 60mv dropout at 100ma load ? dual shutdown pins control each output ? 75db psrr at 1khz ? 7v rms low noise outputs ? current limiting and thermal protection ? short circuit protection ? two ldos in tqfn8 (2mm2mm) package ? output load discharge when disabled applications ? cellular phones ? battery-powered equipment ? laptop, notebook, and palmtop computers ? hand-held equipment ? wireless lan ?mps? and ?the future of analog ic technology? are registered trademarks of monolithic power systems, inc. typical application
mp20142 ?dual-channel, 200ma ldo with programmable output voltage mp20142 rev.0.9 www.monolithicpower.com 2 7/12/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. ordering information* part number * package top marking free air temperature (t a ) MP20142DGT-LF-Z tqfn8 (2mm 2mm) aay -40c to +85c ordering guide* MP20142DGT-LF-Z package type gt: tqfn (2mm x 2mm) * for rohs compliant packaging, add suffix - lf (e.g. mp20142dgt-lf); for tape and reel, add suffix -z (e.g. MP20142DGT-LF-Z). package reference top view vin en1 p2 p1 1 2 3 4 vout1 vout2 gnd en2 8 7 6 5 gnd absolute maxi mum ratings (1) supply input voltage .................................... 6v all other pins ............................................ 5.5v power dissipation, pd @ t a =25c, (2) tqfn8 ...................................................... 1.5w storage temperature range ..... -65c to 150c lead temperature (soldering, 10sec) .....260c esd susceptibility hbm (human body mode) .......................... 2kv mm (machine mode) ................................. 200v recommended operating conditions (3) supply input voltage ..................... 2.5v to 5.5 v operating junct. temp (t j ) ......-40 c to +125 c thermal resistance (4) ja jc tqfn8............................... 80 16 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 power 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) the device is not guaranteed to function outside of its operating conditions. 4) measured on jesd51-7 4-layer board.
mp20142 ?dual-channel, 200ma ldo with programmable output voltage mp20142 rev.0.9 www.monolithicpower.com 3 7/12/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. programmable output voltage setting p1 state p2 state v out1 v out2 l l 1.5v 1.8v l h 1.5v 2.8v l open 1.8v 3.0v h l 2.6v 3.0v h h 2.8v 3.0v h open 2.8v 3.3v open l 3.0v 3.0v open h 3.0v 3.3v open open 3.3v 3.3v
mp20142 ?dual-channel, 200ma ldo with programmable output voltage mp20142 rev.0.9 www.monolithicpower.com 4 7/12/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. electrical characteristics v in = (v out +0.4v) or +2.5v, whichever is greater. c in =c out1 =c out2 =1uf, en1=en2=v in typical value at t a = 25 c for each ldo, unless otherwise noted. notes: 5) dropout voltage is defined as the input to output different ial when the output voltage drops 100mv below its nominal value. 6) line regulation = () in(max ) in(min) out v out v in(min) out(nom) in max vv 100(% / v) vv v ?? ?? ?? ?? ? ?? ? ?? 7) load regulation = () out(max ) out(min) outi outi out nom vv 100(%) v ?? ?? ?? ?? ? parameter symbol condition min typ max units output voltage accuracy ? v out i load =1ma -2.5 2.5 % maximum output current i max continuous 200 ma current limit i lim short circuit current limit 660 ma no load (single channel) 90 a quiescent current i g no load (dual channel) 150 a shutdown supply current i gsd en1 = en2 = gnd 0.01 1 a dropout voltage (5) v drop i out = 100ma 60 120 mv line regulation (6) ? v line v in =(v out +0.4v) or 2.5v to 5.5v, i out =1ma - 0.1 %/v v out > 1.5v 1.2 % load regulation (7) ? v load v out 1.5v 1.8 % en logic high v ih v in = 2.5v to 5.5v 1.6 v en logic low v il v in = 2.5v to 5.5v 0.4 v en input bias current i sd en = gnd or v in 100 na thermal shutdown temperature t sd 140 c thermal shutdown hysteresis ? t sd 10 c output voltage noise v noise 10hz to 30khz, c out =1 f, i load =1ma 7 v rms 100hz, c out = 1f,i load = 200ma (single channel loaded) 75 db output voltage ac psrr 1khz , c out = 1f,i load = 200ma (single channel loaded) 75 db output voltage discharge resistance in shutdown v in =5v, en1=en2=gnd 20 100 ? high state bias current 5 low state bias current -8 a p1/p2 termination bias for setting high, low, open states v in =2.5v to 5.5v open state 0.7 v
mp20142 ?dual-channel, 200ma ldo with programmable output voltage mp20142 rev.0.9 www.monolithicpower.com 5 7/12/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. pin functions pin # name description 1 vin supply input pin 2 en1 channel 1 enable (active high). do not float this pin. 3 p2 programming input 2. the state of p2 selects one of nine output voltage options. 4 p1 programming input 1. the state of p1 selects one of nine output voltage options. 5 en2 channel 2 enable (active high). do not float this pin. 6 gnd common ground 7 vout2 channel 2 output voltage 8 vout1 channel 1 output voltage
mp20142 ?dual-channel, 200ma ldo with programmable output voltage mp20142 rev.0.9 www.monolithicpower.com 6 7/12/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. typical performanc e characteristics v in = 3.7v, p1 high, p2 open (v out1 =2.8v, v out2 =3.3v), c in = c out1 = c out2 =1f, en1=en2= v in t a = +25oc, unless otherwise noted. ground pin current vs. temperature dropout voltage vs. output current enable threshold vs. input voltage (channel 1) enable threshold vs. input voltage (channel 2) enable threshold vs. temperature (channel 2) dropout voltage vs. temperature enable threshold vs. temperature (channel 1) ground pin current vs. input voltage 0 200 400 600 800 1000 1200 3.5 4 4.5 5 5.5 input voltage(v) -40 -20 0 20 40 60 80 100 0 20 40 60 80 100 120 140 160 180 0 50 100 150 200 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 3.5 4 4.5 5 5.5 input voltage(v) v en (v) input voltage(v) input voltage(v) v en (v) 0.5 0.6 0.7 0.8 0.9 1.0 1.0 1.1 1.2 1.3 1.4 1.5 3.5 4 4.5 5 5.5 0.5 0.6 0.7 0.8 0.9 1.1 1.2 1.3 -40 -20 0 20 40 60 80 100 en voltage(v) -40 -20 0 20 40 60 80 100 en voltage(v) cuurent limit vs. input voltage 0 200 400 600 800 1000 1200 0 20 40 60 80 100 120 140 160 180 -40 -20 0 20 40 60 80 100 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.4 1.5 200 300 400 500 600 700 800 3 3.5 4 4.5 5 5.5 both channels loaded both channels loaded channel 1 channel 2 channel 2 en high threshold en low threshold channel 1 en high threshold en low threshold channel 1 channel 2 channel 1, v in =3.7v en high threshold en low threshold channel 2, v in =3.7v en high threshold en low threshold channel 2 channel 1
mp20142 ?dual-channel, 200ma ldo with programmable output voltage mp20142 rev.0.9 www.monolithicpower.com 7 7/12/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. typical performanc e characteristics (continued) v in = 3.7v, p1 high, p2 open (v out1 =2.8v, v out2 =3.3v), c in = c out1 = c out2 = 1f, en1=en2= v in t a = +25oc, unless otherwise noted. -40 -20 0 20 40 60 80 100 channel 2 v in =3.7v current limit vs. temperature output volotage accuracy(%) load regulation -0.20% -0.15% -0.10% -0.05% 0.00% 0.05% 0.10% 0.15% 0.20% -0.20% -0.15% -0.10% -0.05% 0.00% 0.05% 0.10% 0.15% 0.20% 3.0 3.5 4.0 4.5 5.0 5.5 input voltage(v) output voltage accuracy(%) line regulation -40 -20 0 20 40 60 80 100 output voltage accuracy(%) output voltage accuracy v in =3.7v, i out =1ma -20 0 20 40 60 80 100 10 100 1k 10k 100k 1m 10m frequency (hz) psrr 0.1 1 10 100 0 50 100 150 200 c out esr stability vs. ouput current (for both channels) -10 0 10 20 30 40 50 60 frequency (hz) 10 100 1k 10k 100k 1m 10m channel to channel isolation vs. frequency 200 300 400 500 600 700 800 3 3.5 4 4.5 5 5.5 input voltage(v) -0.15 -0.10 -0.05 0.00 0.05 0.10 0.15 channel 1 v in =3.7v channel 2 channel 1 i out =1ma channel 1 channel 2 unstable region stable region channel 1 channel 2 channel 1 channel 2 i out =200ma, single channel loaded channel 1 channel 2
mp20142 ?dual-channel, 200ma ldo with programmable output voltage mp20142 rev.0.9 www.monolithicpower.com 8 7/12/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. typical performanc e characteristics (continued) v in = 3.7v, p1 high, p2 open (v out1 =2.8v, v out2 =3.3v), c in = c out1 = c out2 = 1f, en1=en2= v in t a = +25oc, unless otherwise noted. v in 2v/div v out1 2v/div v out2 2v/div 200ms/div 200ms/div 200ms/div v in 2v/div v out2 2v/div v out1 2v/div i out2 200ma/div 200ms/div v in 1v/div v out1 (ac) 10mv/div i out1 200ma/div input power up v in =3.7v, no load i out1 /i out2 200ma/div input power down v in =3.7v, no load v in 2v/div v out1 2v/div v out2 2v/div i out1 /i out2 200ma/div input power up v in =3.7v, i out1 =i out2 =200ma with resistive load input power down v in =3.7v, i out1 =i out2 =200ma with resistive load en start up v in =3.7v, i out1 =i out2 =200ma with resistive load i out1 200ma/div v in 2v/div v out2 2v/div v out1 2v/div i out2 200ma/div i out1 200ma/div en 2v/div v out2 2v/div v out1 2v/div i out2 200ma/div i out1 200ma/div en 2v/div v out2 2v/div v out1 2v/div i out2 200ma/div i out1 200ma/div en shut down v in =3.7v, i out1 =i out2 =200ma with resistive load line transient (ch1) v in =3.7v to 4.7v, i out1 =200ma with resistive load line transient (ch2) v in =3.7v to 4.7v, i out2 =200ma with resistive load v in 1v/div v out2 (ac) 10mv/div i out2 200ma/div load transient (ch1) v in =3.7v, i out1 =1ma to 200ma with resistive load v out1 (ac) 100mv/div i out1 200ma/div
mp20142 ?dual-channel, 200ma ldo with programmable output voltage mp20142 rev.0.9 www.monolithicpower.com 9 7/12/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. typical performanc e characteristics (continued) v in = 3.7v, p1 high, p2 open (v out1 =2.8v, v out2 =3.3v), c in = c out1 = c out2 = 1f, en1=en2= v in t a = +25oc, unless otherwise noted. 20ms/div 40ms/div 100ms/div v in 2v/div v out2 2v/div v out1 2v/div v in 2v/div v out1 2v/div v out2 2v/div 100ms/div load transient (ch2) v in =3.7v, i out2 =1ma to 200ma with resistive load v out1 (ac) 100mv/div i out1 200ma/div ocp start up v in =3.7v, short v out1 to gnd before start up ocp start up v in =3.7v, short v out2 to gnd before start up ocp recovery v in =3.7v, remove the over current condition of channel 1 v in 2v/div v out2 2v/div v out1 2v/div ocp recovery v in =3.7v, remove the over current condition of channel 2 v in 2v/div v out1 2v/div v out2 2v/div
mp20142 ?dual-channel, 200ma ldo with programmable output voltage mp20142 rev.0.9 www.monolithicpower.com 10 7/12/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. function block diagram figure1?function block diagram
mp20142 ?dual-channel, 200ma ldo with programmable output voltage mp20142 rev.0.9 www.monolithicpower.com 11 7/12/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. operation the mp20142 integrates two low noise, low dropout, low quiescent current and high psrr linear regulators. it is intended for use in devices that require very low voltage, low quiescent current power such as wireless lan, battery-powered equipment and hand-held equipment. output voltages are optional ranging from 1.2v to 3.3v, and each channel can supply current up to 200ma. the part uses internal p-channel mosfets as the pass elements and features internal thermal shutdown and internal current limit. 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 p-channel mosfets pass element behaves as a low- value resistor, the dropout voltage of mp20142 is very low. shutdown the mp20142 has two en pins to control each channel respectively. and each channel can be switched on or off by a logic input at the en pin. a high voltage at this pin will turn the device on. when the en pin is low, the regulator output is off. the en pin should be tied to vin to keep the regulator output always on if the application does not require the shutdown feature. do not float the en pins. output discharge the part involves a discharge function that provides a resistive discharge path for the external output capacitor. the function will be active when the part is disabled and it will be done in a very limited time. current limit the mp20142 includes two independent current limit structures which monitor and control each p-channel mosfet?s gate voltage limiting the guaranteed maximum output current to 660ma. thermal protection thermal protection turns off the p-channel mosfets when the junction temperature exceeds +140oc, allowing the ic to cool. when the ic?s junction temperature drops by 10oc, the p-channel mosfets will be turned on again. thermal protection limits total power dissipation in the mp20142. for reliable operation, the junction temperature should be limited to 125 oc maximum. internal p-channel pass device the mp20142 features dual typical 0.6 ? p- channel mosfet pass devices. it provides several advantages over similar designs using pnp pass transistors, including longer battery life.
mp20142 ?dual-channel, 200ma ldo with programmable output voltage mp20142 rev.0.9 www.monolithicpower.com 12 7/12/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. application information output voltage the output voltage of mp20142 is programmable with setting different states of p1 pin and p2 pin. the setting rule is as the following table: table 1 programmable output voltage setting p1 state p2 state v out1 v out2 l l 1.5v 1.8v l h 1.5v 2.8v l open 1.8v 3.0v h l 2.6v 3.0v h h 2.8v 3.0v h open 2.8v 3.3v open l 3.0v 3.0v open h 3.0v 3.3v open open 3.3v 3.3v for example, when p1 and p2 are both open, output voltage of channel 1 is 3.3v, and the output voltage of channel 2 is 3.3v. power dissipation the power dissipation for any package depends on the thermal resistance of the case and circuit board, the temperature difference between the junction and ambient air, and the rate of airflow. the power dissipation across the device can be represented by the equation: p = (v in - v out ) i out the allowable power dissipation can be calculated using the following equation: p (max) = (t junction - t ambient ) / ja where (t junction - t ambient ) is the temperature difference between the junction and the surrounding environment, ja is the thermal resistance from the junction to the ambient environment. connect the gnd pin of mp20142 to ground using a large pad or ground plane helps to channel heat away. input capacitor selection using a capacitor whose value is >0.47 f on the mp20142 input and the amount of capacitance can be increased without limit. input capacitor of larger value will help improve line transient response with the drawback of increased size. ceramic capacitors are preferred, but tantalum capacitors may also sufficient. output capacitor selection the mp20142 is designed specifically to work with very low esr ceramic output capacitor in space-saving and performance consideration. a ceramic capacitor in the range of 0.47 f and 10 f, and with esr lower than 1 ? is suitable for the mp20142 application circuit. output capacitor of larger values will help to improve load transient response and reduce noise with the drawback of increased size.
mp20142 ?dual-channel, 200ma ldo with programmable output voltage notice: the information in this document is subject to change wi thout notice. users should warra nt and guarantee that third party intellectual property rights are not infringed upon w hen integrating mps products into any application. mps will not assume any legal responsibility for any said applications. mp20142 rev.0.9 www.monolithicpower.com 13 7/12/2010 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2010 mps. all rights reserved. package information tqfn8 (2mm2mm) 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 je dec mo-229, variation wccd-3. 5) drawing is not to scale. pin 1 id see detail a 0.70 pin 1 id option a 0.30x45o 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 0.70 0.80 0.20 ref 1.20

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