specifications of any and all sanyo semiconductor co.,ltd. 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 ' s products or 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. the products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appli ances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliab ility and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. if you should intend to use our products for new introduction or other application different from current conditions on the usage of automotive device, communication device, office equipment, industrial equipment etc. , please consult with us about usage condition (temperature, operation time etc.) prior to the intended use. if there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. 91212nkpc 20120822-s00003 no.a2120-1/5 LV58063MC overview LV58063MC is a 1ch step-down switching regulator. 0.13 fet is incorporated on the upper side to achieve high-efficiency operation for large output current. low-heat resistance and compact-pack age sop8l (200mil) employed. current mode control gives superior load current response with easy phase compensation. en pin, allowing the standby mode with the current drain of 70 a. pulse-by-pulse over-current protection and overheat protection available for protection of load devices. externally adjustable soft start time. features ? 3a 1ch step-down switching regulator ? thermal shutdown ? wide input range (8 to 28v) ? reference voltage: 0.8v ? high efficiency (90% i out =1a, v in =12v, v out =5v) ? fixed frequency: 370khz ? standby mode ? soft start ? over-current protection ? compact package: sop8l (200mil) with exposed pad ? overshoot control after over-current protection event application ? lcd/pdp-tv stb white goods office equipment general consumer electronics bi-cmos lsi step-down switching regulator orderin g numbe r : ena2120
LV58063MC no.a2120-2/5 specifications absolute maximum ratings at ta = 25 c parameter conditions conditions ratings unit maximum input v in voltage v in max 32 v boot pin maximum voltage v bt max 37 v sw pin maximum voltage v sw max v in max v boot pin-sw pin maximum voltage v bs-sw max 7v fb, en, comp, ss pin maximum voltage vfs max 7v allowable power dissipation pd max mount on a specified board * 2.05 w junction temperature tj max 150 c operating temperature topr -20 to +80 c storage temperature tstg -40 to +150 c * specified board: 46.4mm 31.8mm ? 1.7mm, glass epoxy. note: plan the maximum voltage while including coil and surge volt ages, so that the maximum voltage is not exceeded even for an instant. recommended operating conditions at ta = 25 c parameter conditions conditions ratings unit v in pin voltage v in 8 to 28 v boot pin voltage v bt -0.3 to 34 v sw pin voltage v sw -0.4 to v in v boot pin-sw pin voltage v bs-sw 6.5 v fb, en, comp, ss pin voltage v fso 6v electrical characteristics at ta = 25c v in = 12v, unless otherwise specified. ratings parameter conditions conditions min typ max unit ic current drain at standby i cc 1 en=0v 70 a ic current drain in operation i cc 2 en=open, fb=1v 5 ma efficiency effcy v in =12v, i out =1a, v o =5v design target: *1 90 % reference voltage vref v in =8v to 28v ( 2%) -2% 0.8 +2% v fb pin bias current iref fb=0.8v application 10 100 na high-side on resistance ronh boot=5v 0.13 low-side on resistance ronl 7 oscillation frequency f osc 296 370 444 khz oscillation frequency during short-circuit protection f oscs 30 38 46 khz en high-threshold voltage venh 1.9 v en low-threshold voltage venl 0.8 v en pull-up corrent ien en=0v 16 a maximum on duty d max 80 % current limit peak value 1 icl1 v in =12v, v out =5v, l=10 h 3.8 a thermal shutdown temperature ttsd *design guarantee *2 160 c thermal shutdown temperature hysteresis dtsd *design guarantee *2 40 c soft start current i ss ss=0v 6 10 14 a *1: reference value (not tested before shipment) *2: design guarantee (value guaranteed by design and not tested before shipment)
LV58063MC no.a2120-3/5 package dimensions unit : mm (typ) 3439 pin assignment 1 2 3 4 8 7 6 5 boot v in sw gnd ss en comp fb to p view block diagram and sample application circuit (3.3v output) fb comp osc 370khz error amp. pwm comparator ss en uvlo + current sense amp. pre-drive vref 0.8v tsd internal regulator v in internal regulator (5v) internal stable supply v in =12v 1:n sw gnd boot boot (sw +vreg.) v out =3.3v ++ -- r10=4.3k r1=27k r3=10k r2=2.4k c3= 6800pf c4=open c6=0.015 f c1= 0.01 f l1=10 h d1=sbm30-03 c2=10 f/25v h:on or open c9=22 f/16v pre-drive current limit logic l:off +- c8=10 f/25v c5=22 f/16v ? c1,c8,c5,c9 = ceramic capacitor ? l1=cdrh105rnp-100nc (sumida) rb=0 sanyo : sop8l(200mil) 0.05 12 8 0.2 4.93 3.94 5.99 0.64 0.41 1.27 1.68 max (1.5) top view side view side view bottom view (3.10) (2.41) -20 0 20 40 60 80 100 0 2.5 2.0 1.5 1.0 0.5 2.05 pd max -- ta ambient temperature, ta -- c allowable power dissipation, pd max -- w 1.15 mounted on a specified board: 46.4 31.8 1.7mm 3 glass epoxy both side
LV58063MC no.a2120-4/5 pin function pin no. pin name description equivalent circuit 1 boot internal high side nmos fet boot strap capacitor terminal. connect around 22nf capacitor or greater between sw and boot. to operate within absolute maximum rating of sw, to keep stable operation, and to reduce switching noise, please, use a series resistor, rb (value is around 100 ) is recommended to use. v in cboot sw hi side mos low side mos 2 v in input voltage pin. large filter capacitor ( equal or larger than 20 f) should be connected between v in and gnd to eliminate noise on the input and to operate properly. see boot 3 sw power switching pin. connect the output lc filter. connect the above-mentioned capacitor between this pin and boot pin. see boot 4 gnd ground pin. 5 fb feedback pin. connect a voltage divider resistor across fb to set the regulated output voltage. the output voltage is given by next equation. v out = vref { 1 + (r1 + r10) r3 } vref = 0.8v example: 3.3v output voltage (see block diagram and sample application circuit) v out = 0.8 { 1 + (27k + 4.3k) 10k } =3.304v internal regulated fb vref 0.8v ss v in 10 a 6 comp phase compensation pin. connect an external capacitor and a resistor for the dc dc converter close loop-phase compensation. comp v in internal regulation line clump circuit 7 en enable terminal. if applying logically high voltage, or left open, the converter operates. if connected to gnd, the converter?s operation stops. en v in 2pf q117 continued on next page.
LV58063MC ps no.a2120-5/5 continued from preceding page. pin no. pin name description equivalent circuit 8 ss soft start terminal internal source current (10 a) and external capacitor will make soft start time. soft start capacitor, c6 is given by next equation, c6 = 10 a tss vref where, tss : soft start time, vref : reference voltage example : soft start time = 1.2ms c6 = 10 a 1.2ms 0.8 v = 0.015 f see fb considerations for the design ? insertion of serial beads in the schottky diode for removal of noise may cause generation of the negative voltage on sw pin deviating from the absolute maximum rating at the sw pi n, resulting in failure of normal operation. please, do not insert beads as above described. inst ead, remove noise by rb resistor. ? exposed pad on the bottom side of the ic should be soldered. we cannot recommend other usages of the exposed pad. sanyo semiconductor co.,ltd. 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 specif ications of any and all sanyo semiconductor co.,ltd. products described or contained herein. regarding monolithic semiconductors, if you should intend to use this ic continuously under high temperature, high current, high voltage, or drastic temperature change, even if it is used within the range of absolute maximum ratings or operating conditions, there is a possibility of decrease reliability. please contact us for a confirmation. sanyo semiconductor co.,ltd. strives to supply high-quality 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 accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents 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 semiconductor co.,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 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 consent of sanyo semiconductor co.,ltd. any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. when designing equ ipment, refer to the "delivery specification" for the sanyo semiconductor co.,ltd. product that you intend to use. upon using the technical information or products described 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 for any claim or suits with regard to a third party's intellectual property rights which has resulted from the use of the technical information and products mentioned above. this catalog provides information as of september, 2012. specifications and information herein are subject to change without notice.
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