92706 / 10606 ms ot b8-5886 no.7161-1/7 L78MS05J L78MS05Jsmp overview the L78MS05J and L78MS05Jsmp are general-purpose constant voltage power supplies that feature an output current of 500ma and a built-in on/off function. the current drain in the ou tput off state is low, making these devices effective for reducing power consumption in application equipment. the surface mounting package can contribute to miniaturization and improved efficiency. these devices are optimal for use in all types of av and oa equipment and in automotive applications (such as power supplies for meters) as well. functions ? strobe pin that controls the on/off state of the output voltage (active low input). ? 500ma output current. features ? to-220-5h package for easier moun ting and thermal design (L78MS05J). ? smp5 package for easier mounting and thermal design (L78MS05Jsmp). ? low output off state current drain makes these devices optimal for saving power in applications. ? full complement of built-in protection circuits (current limiter and thermal protection circuit). specifications maximum ratings at ta = 25 c parameter symbol conditions ratings unit maximum input voltage v in max 35 v maximum strobe pin voltage vst max v in max v continued on next page. ordering number : en7161 monolithic linear ic 5v constant-voltage power supply with strobe line any and all sanyo semiconductor 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, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. consult with your sanyo semiconductor representative nearest you before using any sanyo semiconductor products described or contained herein in such applications. sanyo semiconductor 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 semiconductor products described or contained herein.
L78MS05J/l78s05jsmp no.7161-2/7 continued from preceding page. parameter symbol conditions ratings unit L78MS05J - independent ic 1.75 w L78MS05J smp *: when mounted on the stipulated circuit board 1 3.9 w allowable power dissipation p d max *: when mounted on the stipulated circuit board 2 2.0 w operating temperature topr -40 to +85 c operating temperature tstg -58 to +150 c *: stipulated circuit board 1: 76.1 114.3 1.6mm3 cooper foil ratio: 60% fr4 heat sink fin mounting area pattern: 23% [2000mm2] *: stipulated circuit board 2: 140 300 1.6mm3 cooper foil ratio: 60% fr4 allowable operating conditions at ta = 25 c parameter symbol conditions ratings unit input voltage v in 7.5 to 20.0 v output current l out 0 to 500 ma output on control voltage vstl -0.3 to 0.8 v output off control voltage vsth 2.0 to v in ma electrical characteristics at ta = 25 c, v in = 10v, i out = 350ma ratings parameter symbol conditions min typ max unit [output on state, vst = low] output voltage 1 v out 1 4.8 5.0 5.2 v line regulation 1 ? voln1 7v v in 25v, i out = 200ma 3 50 mv line regulation 2 ? voln2 8v v in 20v, i out = 200ma 1 25 mv load regulation 1 ? vold1 5ma i out 500ma 100 mv load regulation 2 ? vold2 5ma i out 200ma 50 mv output voltage 2 v out 2 7v v in 20v, 5ma i out 350ma 4.75 5.25 v current drain iq 1.9 5.0 ma output noise voltage vno 10hz f 100khz 90 vrms rrej1 f = 120hz, 8v v in 19v, i out = 100ma 60 63 db ripple rejection rrej2 f = 120h, 8v v in 19v, i out = 300ma 60 54 db minimum input to output voltage drop vdrop i out = 350ma 2.0 v output on control voltage vstl 0.8 v short circuit current iosc v in = 35v, for gnd 300 ma peak output current iop 700 ma [output off state, vst = high] low-level output voltage vo off vst = 5v 20 200 mv quiescent current iq off vst = 5v, except for istb 35 40 a output off control voltage vsth 2.0 v in v [thermal protection] operating temperature ttsd design target value* 150 180 c * this rating is a design target value and is not measured.
L78MS05J/l78s05jsmp no.7161-3/7 package dimensions unit : mm 3079a [L78MS05J] 3275 [L78MS05Jsmp] [L78MS05J] [L78MS05Jsmp] pin arrangement note: nc pins must not be used (pin number 2 in the pin arrangement) 1:v in 2:nc 3:gnd 4:stb 5:v out 1 5 L78MS05J top view [L78MS05J] 1 5 L78MS05J 1:v in 2:nc 3:gnd 4:stb 5:v out top view [L78MS05Jsmp]
L78MS05J/l78s05jsmp no.7161-4/7 block diagram stipulated test circuits application notes notes: 1. c in and c out must be located as close as possible to the ic to stabilize ic operation. 2. c out must be 0.1f or larger, and a capacitor (such as a tantalum capacitor) with a low temperature coefficient must be used to prevent oscillation at low temperatures. 3. if the stb pin is open, the internal bias will result in the output going to the on state. if the stb function is not used, the stb pin must be connected to ground to complete the stb operation. 4. note that a large current will flow if the ic is connected in reverse, that is, if v in is connected to - and gnd is connected to +.
L78MS05J/l78s05jsmp no.7161-5/7 function table vstb v out low high high low on/off control input block equivalent circuit diagram t t 0 0 vstb v out
L78MS05J/l78s05jsmp no.7161-6/7
L78MS05J/l78s05jsmp ps no.7161-7/7 specifications of any and all sanyo semiconductor 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. sanyo semiconductor 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 semiconductor 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 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 equipment, refer to the "delivery specification" for the sanyo semiconductor 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 semiconductor 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. this catalog provides information as of january, 2006. specifications and information herein are subjec t to change without notice.
|
