ordering number : enn6151 52804tn (ot) no. 6151-1/7 overview the LA5627W is a 4-channel switching regulator controller ic. functions and features ? supports low-voltage operation with a minimum operating voltage of 1.8 v (when the internal sub-power supply is not used). ? operates from voltages as low as 1.2 v when the internal sub-power supply is used. ? independent standby circuits in each of the four channels package dimensions unit: mm 3163b-sqfp48 7.0 7.0 9.0 9.0 0.15 0.5 (1.5) 0.1 1.7max 0.18 (0.5) (0.75) 112 13 24 25 36 37 48 sanyo: sqfp48 [LA5627W] LA5627W sanyo electric co.,ltd. semiconductor company tokyo office tokyo bldg., 1-10, 1 chome, ueno, taito-ku, tokyo, 110-8534 japan four-channel switching regulator controller monolithic linear ic any and all sanyo products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircrafts control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. consult with your sanyo representative nearest you before using any sanyo products described or contained herein in such applications. sanyo assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all sanyo products described or contained herein. parameter symbol conditions ratings unit maximum supply voltage 1 v cc max 14 v maximum supply voltage 2 v batt max 14 v allowable power dissipation pd max independent ic 0.45 w operating temperature topr C20 to +85 c storage temperature tstg C55 to +150 c specifications maximum ratings at ta = 25c
no. 6151- 2 /7 LA5627W parameter symbol conditions ratings unit supply voltage 1 v cc 1.8 to 11 v supply voltage 2 v batt 1.2 to 11 v output sink current isink max 0 to 30 ma reference voltage output current i ref 0 to 1 ma timing resistor value rt 3 to 30 k timing capacitor value ct 100 to 1000 pf triangle wave frequency f osc 0.1 to 1 mhz operating conditions at ta = 25 c parameter symbol conditions ratings unit min typ max [error amplifier] in- pin internal bias voltage v low fb in1 C and in2 C pins 0.475 0.5 0.525 v low-level output voltage v low fb ifb = 20 a 1 v high-level output voltage vhi fb ifb = C20 a 2.25 v common-mode input voltage range v icm in 0 2 v [protection circuits] threshold voltage v th scp 1.1 1.25 1.4 v scp pin current i o scp 3.8 a [stop period adjustment block] input bias current i b det C15 C3 a threshold voltage 1 v th 1 det duty cycle = 100% 0.35 0.4 0.45 v threshold voltage 2 v th 2 det duty cycle = 0% 0.67 0.77 0.87 v [output block] out pin saturation voltage v osat out i out = +30 ma 0.6 v out pin output voltage v o oe i out = C3 ma, caph = v cc 2 v [triangle wave oscillator block] current setting pin voltage v t rt r t = 5.6 k 1.19 1.26 1.33 v output current i oh ct v ct = 0.5 v, r t = 5.6 k 230 a output current ratio ? i o ct 0.8 1.0 1.2 oscillator frequency f osc 1 200 260 320 khz [reference voltage block] reference voltage v ref 1.19 1.26 1.33 v line regulation vln ref v cc = 1.8 v to 11 v 10 mv load regulation vld ref i o 18 = C0.1 ma to C1 ma 10 mv [sub-power supply circuit] vosub setting voltage v o sub 2.1 2.2 2.3 v outsub pin source current i out sub v bat = 1.2 v, v o sub = v cc = 1.8 v, 1 ma v out sub = 0.7 v, csub = 0.9 v csub oscillator frequency f c sub 100 khz en comparator threshold voltage v th ensub 3.0 3.1 3.2 v en comparator hysteresis ? v hys ensub 0.2 0.4 0.6 v ensub shorted current i en sub 120 a [standby circuit] on voltage v on stby 1.15 v off voltage v off stby 0.2 v pin input current i in stby vstby = 3 v 70 a [all circuits] operating current drain i cc 1 ensub = 0 v 7.5 10.5 ma standby mode current drain i cc 2 10 a electrical characteristics at ta = 25 c, v cc = 3 v, vstby1 to 4 = 3 v
pin assignments no. 6151- 3 /7 LA5627W 1 in + fb1 dct1 v ref gnd ba tt outsub csub ensub dtc2 fb2 in2 + in2 LA5627W 2 3 4 5 6 7 8 9 10 11 12 13 stby2 14 capl2 15 caph2 16 out2 17 oe2 18 oe3 19 out3 20 caph3 21 capl3 22 stby3 23 in3 24 in1 48 stby1 47 capl1 46 caph1 45 out1 44 oe1 43 oe4 42 out4 41 caph4 40 capl4 39 stby4 38 in4 37 36 in4 + fb4 dtc4 scp pgnd v cc r t ct2 ct1 dtc3 fb3 in3 + 35 34 33 32 31 30 29 28 27 26 25 a12431 t opvie w 0.2 0 0.4 0.6 20 0 20 40 60 80 100 pdmax ta allowable power dissipation, pdmax w ambient temperature, ta c 0.23 0.45
block diagram (application circuit example 1) no. 6151- 4 /7 LA5627W 2.2 f 1 f 4ch dc/dc conv . scp v ref 33 4 dtc1 3 in1 + 1 in1 48 fb1 2 5.1 k t o v o1 100 0.01 f 0.1 f 130 k 220 k 0.1 f 0.01 f dtc4 34 in4 + 36 in4 37 fb4 35 5.1 k 6.2 k 130 k 220 k 4.3 k 100 t o v o4 0.01 f dtc2 10 in2 + 12 in2 13 fb2 11 100 f 5.1 k t o v o2 0.1 f 130 k 220 k v o4 5 v 100 f t4 t r4 1000 pf 100 oe4 out4 capl4 caph4 v cc 41 42 39 40 t1 t r1 v o1 5 v 100 f 1000 pf 100 oe1 out1 capl1 caph1 44 46 45 43 t2 t r2 v o2 5 v 100 f 1000 pf 100 oe2 out2 capl2 caph2 17 18 15 16 scp vref 31 6 7 8 9 t r5 d1 l1 3 v 100 f 47 f 82 h 300 pf 1000 pf v osub ba tt outsub csub ensub 0.01 f 5.6 k 1000 pf pgnd osc stby sub dc/dc conv . 32 r t ct1 ct2 30 28 29 stby1 stby2 stby3 stby4 47 14 23 38 gnd 5 tr1 to tr4 tr5 t1 to t4 l1 : 2sb1302 : 2sc4694 : 873ac-1046 (toko electric corporation) : 636cy-820m (toko electric corporation) a12432 t3 t r3 v o3 5 v 1000 pf 100 oe3 out3 capl3 caph3 20 19 22 21 0.01 f 0.1 f dtc3 in3 + in3 24 fb3 26 6.2 k 4.3 k 130 k 220 k 100 5.1 k t o v o3 100 27 25
no. 6151- 5 /7 LA5627W application circuit example 2 31 6 7 8 9 3.3 v 56 h 100 f v cc ba tt outsub csub ensub 0.01 f 2.2 f 1 f 5.6 k 1000 pf 1000 pf 0.1 f dtc2 10 in2 + 12 in2 13 fb2 11 pgnd osc stby sub dc/dc conv . 4ch dc/dc conv . 32 r t ct1 ct2 30 28 29 stby1 stby2 stby3 stby4 47 14 23 38 gnd 5 t2 t r2 v o2 12 v 10 f 1000 pf 510 oe2 out2 capl2 caph2 17 18 15 16 scp v ref 33 4 5.1 k 117.3 k t o v o2 6.2 k 0.1 f 130 k 220 k 1000 pf 510 oe1 out1 capl1 caph1 44 in1 + 1 in1 48 fb1 2 5.1 k 147.9 k t o v o1 100 0.1 f dtc1 3 0.1 f 130 k 220 k t1 t r1 v o1 15 v 10 f t3 t r3 v o3 7 v 1000 pf 510 oe3 out3 capl3 caph3 20 19 22 21 10 f scp vref tr1 to tr4 tr5 t1 to t3 : 2sb1302 : 2sc4694 : 873ac-1046 (toko electric corporation) a12433 l1 t r4 v o4 2 v 22 f 1000 pf 510 oe4 out4 capl4 caph4 41 42 39 40 0.1 f 0.01 f dtc4 34 in4 + 36 in4 37 fb4 35 17.24 k 5.1 k 6.2 k 4.3 k 130 k 220 k 100 t o v o4 0.01 f in3 + in3 fb3 26 4.3 k 100 5.1 k 64.09 k t o v o3 0.1 f dtc3 27 130 k 220 k 100 25 24 43 46 45
relationship between v batt and v cc figure 1 shows the relationship between v batt and v cc in the block diagram. (note that this applies when the forward voltage (vf) for d1 is 0.2 v and the loss in the resistive component of l1 is less than 0.2 v.) no. 6151- 6 /7 LA5627W p oint where the outsub oscillator star ts vba tt v cc ba tt outsub csub ensub 2.4v 1.2v 2.2v 0 0 v cc a12434 a12435 31 6 7 8 9 figure 1 relationship between v batt and v cc (the voltage values in the figure are the typical values for the device.) figure 2 peripheral circuit when the sub-dc/dc converter is not used when the sub-dc/dc converter is not used the related pins must be connected as shown in figure 2.
ps no. 6151- 7 /7 LA5627W this catalog provides information as of may, 2004. specifications and information herein are subject to change without notice. specifications of any and all sanyo 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 customers 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 customers products or equipment. sanyo electric co., ltd. strives to supply high-quality high-reliability products. however, any and all semiconductor products fail with some probability. it is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. when designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. in the event that any or all sanyo products (including technical data, services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining the export license from the authorities concerned 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 information storage or retrieval system, or otherwise, without the prior written permission of sanyo electric co., ltd. any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. when designing equipment, refer to the delivery specification for the sanyo product that you intend to use. information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. sanyo believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. capl caph ba tt gnd oe out 17 18 (20,41,44) (19,42,43) 16 (21,40,45) 15 (22,39,46) a12436 5 6 figure 3 output stage equivalent circuit notes on the output stage figure 3 shows the equivalent circuit for the output stage. the out pin operates as an open-collector output when the capl, caph, and oe pins are left open.
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