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. 13108 ms pc 20080124-s00006 no.a1047-1/5 lv5803m overview lv5803m is a 1ch step-down switching regulator. 0.2 ? fet is incorporated on the uppe r side to achiev e high-efficiency operation for large output current. low-heat resistance and compact-package mfp8 employed. current mode control type, with superior load current response and easy phase compensation on/off pin, allowing the standby mode with the current drain of 80 a or less pulse-by-pulse over-current protection and overheat protection available for protection of load devices soft start pin to be provided with a capacitance for soft start. functions ? 2a 1ch step-down switching regulator ? wide input dynamic range (4.5 to 18v) ? high efficiency (90% i out = 1a, v in = 12v, v o = 5v) ? standby mode ? over-current protection ? thermal shutdown ? reference voltage: 0.8v ? fixed frequency: 330khz ? soft start ? compact package: mfp8 (225mil) specifications maximum ratings at ta = 25 c parameter symbol conditions ratings unit maximum input v in voltage v in max 20 v boot pin maximum voltage v bt max 25 v sw pin maximum voltage v sw max v in max v boot pin-sw pin maximum voltage v bs-sw max 7v en pin maximum voltage v en max 20 v fb, comp, ss pin maximum voltage vfs max 7v allowable power dissipation pd max with specified substrate * 1.15 w junction temperature tj max 150 c operating temperature topr -20 to 80 c storage temperature tstg -40 to 150 c * specified substrate: 46.4mm 31.8mm ? 1.7mm, glass epoxy substrate note: plan the maximum voltage while including coil and surge voltages, so that the maximum voltage is not exceeded even for an instant. bi-cmos ic step-down switching regulator orderin g numbe r : ena1047
lv5803m no.a1047-2/5 recommended operating conditions at ta = 25 c parameter symbol conditions ratings unit v in pin voltage v in 4.5 to 18 v boot pin voltage v bt -0.3 to 23 v sw pin voltage v sw -0.4 to v in v boot pin-sw pin maximum voltage v bs-sw 6.5 v en pin maximum voltage v en 18 v fb, comp, ss pin voltage v fso 6v electrical characteristics at ta = 25 c, v in = 12v, unless otherwise specified. ratings parameter symbol conditions min typ max unit ic current drain at standby i cc 1 en=0v 80 a ic current drain in operation i cc 2 en=open 2 ma efficiency effcy v in =12v, i out =1a, vo=5v, design target *1 90 % reference voltage vref v in =4.5v to 18v ( 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 0.20 ? oscillation frequency f osc 265 330 395 khz oscillation frequency during short-circuit protection f oscs 26 33 40 khz en high-threshold voltage venh 1.25 1.55 1.85 v en low-threshold voltage venl 0.95 1.25 1.55 v en pull-up current ien en=0v 45 a maximum on duty d max 86 % current limit peak value 1 ic1 v in =12v, v out =5v, l=10 h 2.5 5.3 a current limit peak value 2 ic2 v in =12v, v out =3.3v, l=10 h 2.8 5.6 a current limit peak value 3 ic3 v in =12v, v out =1.2v, l=10 h 3.1 5.9 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)
lv5803m no.a1047-3/5 package dimensions unit : mm (typ) 3032d 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 330khz 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 ++ -- open or h:on l :off r10=4.3k ? r1=27k ? r3=10k ? r2=10k ? c3= 1500pf c4=open c6= 0.015f c1= 0.022f rb= 39? c5=10f/10v 3 l1=10 h d1=sbm30-03 c2=10 f/25v c8=10 f/25v ro=open short protect circuit short protect circuit comp sw boot ? c1, c8, c5 = ceramic capacitor used. ? l1 = cdrh105rpn-100nc (sumida made) sanyo : mfp8(225mil) 14 85 5.0 0.63 6.4 0.15 0.35 1.27 (0.65) 4.4 (1.5) 1.7max 0.1 -20 0 20 40 60 80 100 0 1.4 1.2 1.0 0.8 0.6 0.4 0.2 1.15 0.64 pd max -- ta ambient temperature, ta -- c allowable power dissipation, pd max -- w mounted on a specified board: 46.4 31.81.7mm 3 glass epoxy board
lv5803m no.a1047-4/5 pin function pin no. pin name function equivalent circuit 1 boot upper mos transistor boot strap capacitance connection pin. connect the boot capacitance of about 0.022 f between sw pins. to protect the sw pin?s absolute maximum rating, to ensure stable operation, and to eliminate noise, the boot capacitance serial resistance (about 100 ? ) rb proves effective. 2 v in input voltage pin. connect substantially large (10 f 2 parameters or more) capacitance between this pin and gnd. 3 sw power switch pin. connect the output lc filt er. connect the above capacitance between this pin and boot pin. v in boot sw short protection circuit output mos 4 gnd ground pin. 5 fb feedback pin. sets the output voltage by means of split resistor in the section of the output voltage v out - fb - gnd. v out setting is made as calculated below: v out = vref { 1 + (r1 + r10) r3 } vref = 0.8v example: 3.3v output voltage (see block diagram and sample application circuit) v out = vref { 1 + (27k + 4.3k) 10k } =3.304v 8 ss soft start pin. sets the soft start time by means of the built-in 10 a source voltage and external soft start capacity. the soft start capacity c6 can be set as follows: c6 = 10 a tss vref where, tss is the soft start time and vref is the reference voltage. example: 1.2ms soft start time achieved c6 = 10 a 1.2ms 0.8v = 0.015 f ss vref 0.8v v in fb 10 6 comp phase compensation pin. connects with the phase compensation external capacitance and resistance of dc/dc converter close loop. comp v in internal regulation line short protection circuit 7 en enable pin. converter enabled when set to the high voltage or open state and disabled when connected to gnd. en v in 1k? ? ?
lv5803m ps no.a1047-5/5 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. considerations for the design ? during use with v in = 12v or less, the boot strap voltage may become deficient due to intermittent operation at no load, resulting in failure of normal operation. in this case, insert a resistance of about 500 ? between v out and gnd and avoid the intermittent operation mode during use. ? insertion of serial beads in the schottky diode for removal of noise may cause generation of the negative voltage deviating from the absolute maximum rating at the sw pin, resulting in failure of normal operation. in such an event, do not insert beads as above described and, instead, remove noise by means of the boot resistance rb. this catalog provides information as of january, 2008. specifications and information herein are subject to change without notice.
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