orderin g numbe r : ena1669 bi-cmos ic dc/dc converter ic LV5071M overview the sanyo LV5071M is a dc/dc converter ic that has a step-down dc/dc converter output and an externally-controllable gpo output for discharging the output capacitor. features ? one channel of synchronous rectifying pwm controlled step-down dc/dc converter output (0.8v to 3.3v/1a) ? one channel of externally controllable gpo output for discharging the output capacitor ? bu ilt-in thermal shutdown circuit ? bu ilt-in hiccup recovery specifications maximum ratings at ta = 25 c parameter symbol conditions ratings unit maximum supply voltage v in v in , pv in -0.3 to 6.0 v input pin voltage v in c gpi, endco -0.3 to 6.0 v output pin voltage v out lx, gpo -0.3 to 6.0 v allowable power dissipation pd max ta 25 c mounted on a circuit board.* 1.5 w operating temperature topr -20 to +85 c storage temperature tstg -40 to +125 c * specified circuit board : 50.0mm 50.0mm 1.6mm, 2-layer glass epoxy printed circuit board, wiring density on the backside = 54% specifications of any and all sanyo semiconductor co.,l td. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer ' s products or equipment. to verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer ' sproductsor equipment. any and all sanyo semiconductor co.,ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, av equipment, communication device, office equipment, industrial equ ipment etc.). the products mentioned herein shall not be intended for use for any "special application" (medica l equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, t ransportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of re liability and can directly threaten human lives in case of failure or malfunction of the product or may cause har m to human bodies, nor shall they grant any guarantee thereof. if you should intend to use our products for app lications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. if there is n o consultation or inquiry before the intended use, our customer shall be solely responsible for the use. 31010 sy pc 20100218-s00004 no.a1669-1/9
LV5071M operating conditions at ta = 25 c parameter symbol conditions ratings unit v in = pv in , 0.8v v out 1.3v 2.95 to 5.5 v v in = pv in , 1.3v v out 1.9v 3.2 to 5.5 v supply voltage v in v in = p v in , 1.9v v out 3.3v 4.5 to 5.5 v input pin voltage v in c gpi, endco -0.3 to v in v electrical characteristics, current drain, unless otherwise specified at t a = 25 c, v in = 5.0v, no load ratings parameter symbol conditions min typ max unit standby current drain i cc sb gpi = endco = low 0.5 10 a current drain dcdc on i cc fl gpi = endco = high, v out = 1 .8v 12 16 ma dc/dc, unless otherwise specified at t a = 25 c, v in = 5.0v, v out = 1.8v, no load ratings parameter symbol conditions min typ max unit fb voltage vfb i o = 10ma 0.49 0.50 0.51 v current limit peak value climit 1.5 a efficiency 1 ef1 i o = 0. 5a, v out = 3.3v 90 % efficiency 2 ef2 i o = 0. 5a, v out = 1.8v 82 % load regulation vl i o = 1ma to 1a 15 45 mv frequency fosc 1.7 2.2 2.7 mhz rlxp i o h = -300ma, pch 0.15 lx on resistance rlxn i o l = 300ma, nch 0.15 gpi, endco input, gpo output, unless otherwise specified at t a = 25 c, v in = 5.0v ratings parameter symbol conditions min typ max unit gpo output current igpo gpi = 0v, gpo = 1.5v 7.5 15 37.5 ma gpo output voltage low-level v o l gpi = 0v, i o l = 5ma 0.5 1 v gpo output leakage current ilk gpo 0 10 a gpi/endco input voltage high-level v in h input high-level gpi, endco 1.5 v gpi/endco input voltage low-level v in l input low-level gpi, endco 0 0.3 v package dimensions unit : mm (typ) 3384 no.a1669-2/9 sanyo : mfp12s(225mil) 5.0 4.4 6.4 0.63 12 12 0.15 0.3 0.8 (0.5) 1.7 max (1.5) (2.6) (3.4) 0.05 top view side view side view bottom view pd max -- ta 0 0.60 1.50 1.0 2.0 1.5 0.5 --20 60 80 20 40 0 100 ambient temperature , ta -- c allowable power dissipation, pd max -- w specified circuit board : 50.0 50.0 1.6mm 3 2-layer glass epoxy board, wiring density on the backside = 54%
LV5071M specified board for pd max measurement pin assignment 12 11 10 LV5071M 9 8 7 pgnd2 endco v in gpi gnd bgr 1 2 3 4 5 6 pgnd1 lx nc pv in fb gpo top view no.a1669-3/9
LV5071M block diagram + - 7 8 9 10 11 12 6 4 3 2 1 (0.5v) 5.0v 2.2h v out cvin = 10f 3 co = 22f cf = 1000pf cvin = 1 to 10f 0.6k to 5.6k 1k 0.8v to 3.3v (1a) vref osc soft start soft start thermal protection pwm control output control current protection bgr gnd gpi v in endco pgnd2 gpo fb pv in nc lx pgnd1 (1.25v) 0.22f 5 pin descriptions pin no. pin name description 1 pgnd1 dc/dc power-dedicated ground 2 lx switching regulator pwm output pin 3 nc nc 4 pv in dc/dc power dedicated power pin 5 fb dc/dc feedback voltage input pin 6 gpo gpo output for discharging the output capacitor 7 bgr internal reference voltage output pin 8 gnd signal ground 9 gpi gpo output control pin. l : output capacitor discharge 10 v in signal system power supply 11 endco dc/dc output control pin. low : off, high : on 12 pgnd2 dc/dc power dedicated ground no.a1669-4/9
LV5071M pin functions pin no. pin name pin function equivalent circuit 2 lx switching regulator pwm signal output pv in pgnd lx 5 fb switching regulator feedback voltage input v in gnd fb 1k 6 gpo gpo output for discharging the output cap acitor gpo gnd 100 7 bgr reference voltage output v in gnd bgr 1.5k continued on next page. no.a1669-5/9
LV5071M continued from preceding page. pin no. pin name pin function equivalent circuit 9 gpi gp0 output control pin (low : discharging the output capacitor) v in gnd gpi 10k 500k 11 endco dc/dc on/off control (high : converter on) v in gnd endco 10k 500k no.a1669-6/9
LV5071M evaluation board efficiency -- load current 50 70 80 90 60 70 80 90 60 100 10 257 100 23 57 23 7 200 600 325 7 1000 325 7 3 100 23 57 23 57 1000 100 5237 1000 5237 5 400 800 10000 load current, i out -- ma efficiency -- load current efficiency -- % 50 100 10 100 23 57 1000 23 57 23 57 100 23 57 1000 2 3 57 2 3 57 100 23 57 1000 23 57 23 57 500 1000 2000 1500 2500 10000 load current, i out -- ma efficiency -- load current efficiency -- % 50 60 70 80 90 60 70 80 90 100 10 10000 load current, i out -- ma efficiency -- load current efficiency -- % 50 100 10 10000 load current, i out -- ma efficiency -- load current efficiency -- % 50 60 70 80 90 60 70 80 90 1.810 1.800 1.790 1.5 1 0.5 100 50 100 10 10000 load current, i out -- ma efficiency -- load current efficiency -- % 10 10000 load current, i out -- ma load regulation (v in = 5v v out = 1.8v) output voltage, v out -- v 1.780 1.820 0 2 0 1000 load current, i out -- ma current limit (v out = 1.8v) output voltage, v out -- v 0 3000 load current, i out -- ma efficiency -- % efficiency v out = 3.3v efficiency v out = 1.8v efficiency v out = 1.2v efficiency v out = 1v efficiency v out = 1.8v efficiency v out = 2.5v v in = 5v v in = 3.3v v in = 3.3v 5v v in = 3.3v 5v v in = 3.3v 5v 5v v in = 5v no.a1669-7/9
LV5071M no.a1669-8/9 endco turn on 0 1.5 2.0 2.5 0.5 1.0 0.500 0.505 0.495 3.0 0 0.5 1.0 80 20 60 1.5 04 0 2.0 ambient temperature , ta -- c ta -- fb (v out = 1.8v, i o = 10ma) fb voltage , vfb -- v 0.490 0.510 --20 0 20 40 60 80 100 200 300 400 85 ambient temperature , ta -- c ta -- v out (v out = 1.8v, i o = 10ma) output voltage , v out -- v 1.750 1.825 1.800 1.775 1.7 1.75 1.8 1.85 1.850 --20 85 load transient response 1 (i o = 10ma 1a) output voltage , v out -- v i o -- a -- 1 0 1 2 1.9 0 500 ven -- v output voltage , v -- v out
LV5071M endco on waveforms. (v out = 1.8v, co = 22 f, cvin = 1 f, cpvin = 10 f 3, cbgr = 0.22 f) 1ch endco 5v/div 2ch bgr 1v/div 3ch v out 1v/div 4ch i in 100ma/div 1ch endco 5v/div 2ch bgr 1v/div 3ch v out 1v/div 4ch i in 500ma/div 10ms/s 500s/div 500s/div startup waveform no load startup waveform i o = 1a 10ms/s 5ms 5.0v 1 5ms 1.00v 2 5ms 1.00v 3 5ms 100ma 4 5ms 5.0v 1 5ms 1.00v 2 5ms 1.00v 3 5ms 0.50a 4 1ch endco 5v/div 2ch bgr 1v/div 3ch v out 1v/div 4ch i in 100ma/div 1ch endco 5v/div 2ch bgr 1v/div 3ch v out 1v/div 4ch i in 500ma/div 2.5ms/s 2ms/div 500s/div stop waveform no load stop waveform i o = 1a 10ms/s 2ms 5.0v 1 2ms 1.00v 2 2ms 1.00v 3 2ms 100ma 4 5ms 5.0v 1 5ms 1.00v 2 5ms 1.00v 3 5ms 0.50a 4 sanyo semiconductor co.,ltd. assumes no responsib ility for equipment failures that result from using products at values that exceed, even momentarily, rate d values (such as maximum ra tings, operating condition ranges, or other parameters) listed in products specif ications of any and all sanyo semiconductor co.,ltd. products described or contained herein. sanyo semiconductor co.,ltd. strives to supply high-qual ity high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. it is possible that these probabilistic failures or malfunction could give rise to acci dents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause dam age to other property. when designing equipment, adopt safety measures so that these kinds of accidents or e vents cannot occur. such measures include but are not limited to protective circuits and error prevention c ircuits for safe design, redundant design, and structural design. upon using the technical information or products descri bed herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of sanyo semiconductor co.,ltd. or any third party. sanyo semiconductor co.,ltd. shall not be liable f or any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. information (including circuit diagr ams and circuit parameters) herein is for example only; it is not guaranteed for volume production. any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. when designing equi pment, refer to the "delivery specification" for the sanyo semiconductor co.,ltd. product that you intend to use. in the event that any or all sanyo semiconductor c o.,ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities conc erned in accordance with the above law. no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any in formation storage or retrieval system, or otherwise, without the prior written consent of sanyo semiconductor co.,ltd. this catalog provides information as of march, 2010. specifications and information herein are subject to change without notice. ps no.a1669-9/9
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