L4953K multifunction voltage regulator for car radio 3 outputs: 8.25v (500ma); 5v (1a); 5v (100ma) standby out1 (8.25v) and out2 (5v) with inde- pendent enable control for stand- by mode 1.5a high side driver with clamped output (16v) logic output for: C supply undervoltage (lvw) C overvoltage (fault) C thermal protection (fault) reset function ignition comparator reverse battery and load dump protection thermal shutdown description the L4953K contains a triple voltage regulator and a power switch. the ic includes a monitoring circuit to warn if a low voltage or no voltage condition is occuring. in stand-by output is active as long as possible even when in thermal shutdown or any other fault conditions. the stcap pin allows the use of a reserve sup- ply capacitor that will hold enough energy for the 5v stand-by line to allow the m p to store data. this is advanced information on a new product now in development or undergoing evaluation. details are subject to change withou t notice. june 2000 ? 5v, 100ma regulator stand-by load dump and rev batt prot ref gen 5v, 1000ma regulator switched 8.25v, 500ma regulator switched 16v, 1.5a voltage clamp switched overvoltage undervoltage thermal prot reset vcap vref1 lvw threshold vref2 reset threshold ignition threshold prot v s 7 sig gnd 3 en 5v 1 stcap 12 en 8.25v 2 en 16v 15 11 stand-by 5v 9 out 5v 10 out 8.25v 4 out 16v 14 13 6 ign out lvw/fault reset ign inp 5 d94au213b pow gnd 8 block diagram multiwatt 15 ordering number: L4953K 1/8
absolute maximum ratings symbol parameter value unit v sdc dc operating supply voltage C14 to 28 v v str transient supply voltage 50 v i o output current internally limited t op operating temperature range C40 to 85 c t stg storage temperature C55 to 150 c thermal data symbol parameter value unit r th j-case thermal resistance junction-case 2 c/w 1 2 3 4 5 6 7 9 10 11 8 stby5v out 8.25v out 5v pgnd v s ignout igninp out 16v sgnd en 8.25v en 5v tab connected to pin 8 13 14 15 12 en 16v reset lvw/fault stcap d94au054b pin connection (top view) L4953K 2/8
electrical characteristics (v s = 14v, t amb = 25 c, unless otherwise specified.) symbol parameter test condition min. typ. max. unit v s operating supply voltage 11 18 v en output noise voltage any reg. supply, f = 100hz to 200khz 200 400 m v t shud thermal shutdown junction temperature 155 c 5v stand-by output voltage v 5st-by stand-by output voltage i load = 5ma 4.75 5 5.25 v d v line line regulation 11v < v s < 16v 5 50 mv d v load load regulation 5ma < iout < 100ma 45 150 mv v dropout dropout voltage i out = 100ma, v s = 5.5v 0.2 0.6 v i qst-by quiescent current @ stand-by i load = 5ma 0.3 0.5 ma 5v/1000ma switched output voltage v out5 5v output voltage no load 4.75 5 5.25 v d v line line regulation 7v < vs < 18v 5 50 mv d v load load regulation 5ma < iout < 1a 12 50 mv v dropout dropout voltage i out = 1a, v s = 5.5v 1 1.5 v i q quiescent current 75ma < i out < 1a 30 100 ma swon switch on 3.5 v sw off switch off 1.5 v sw hyst switch hysteresis 100 200 350 mv r in input impedance 25 40 50 k w 8.25v/500ma switched output voltage v out 8.25v output voltage no load 7.9 8.25 8.6 v d v line line regulation 11v < vs < 18v 5 50 mv d v load load regulation iout = 500ma 12 50 mv v dropout dropout voltage i out = 500ma, 5.5v < v s < 8.8v 0.4 0.9 v i q quiescent current i out = 500ma 10 25 ma svr supply voltage rejection f = 100hz f = 10khz 55 40 75 db swon switch on 3.5 v sw off switch off 1.5 v sw hyst switch hysteresis 100 200 350 mv r in input impedance 25 40 50 k w high side driver with clamped output (16v) v out16 max. output voltage v s = 18v 15 16.2 v i o output continuous current vs = 15v 1.5 a v dropout dropout voltage i out = 1a, 6v < v s < 15v 0.4 0.9 v swon switch on 3.5 v sw off switch off 1.5 v sw hyst switch hysteresis 100 200 350 mv r in input impedance 25 40 50 k w L4953K 3/8
electrical characteristics (continued) lvw/fault (referred to v s ) symbol parameter test condition min. typ. max. unit thon lvw lvw on threshold 8.55 9.00 9.45 v thoff lvw lvw off threshold 8.75 9.20 9.65 v d (lvw-out 8.25) lvw-v out 8.25 0.5 0.65 v hyst threshold hysteresis 50 200 350 mv out lw lvw output voltage 1.5 v i leak leakage current 50 m a reset (referred to 5v st-by) thon reset reset on threshold 3.6 3.8 4 v thoff reset reset off threshold 3.8 4 4.2 v hyst reset reset threshold hysteresis 50 100 250 mv out reset reset output voltage 1.5 v i leak reset leakage current 50 m a ignition th ign ign comparator positive threshold 5.5 6.5 7.5 v hyst ign ign comparator threshold hysteresis 100 300 500 mv ign high ignition comparator output high 3.5 vst-by v 18.5k d95au402 2.1k 20k 10k pin 1: en 5v pin 2: en 8.25v 6.5k d95au403 pin 4: out 16v circuit configuration - pin equivalent circuits L4953K 4/8
9.7k d95au404 36.3k 5.7v 5.3k pin 5: ing inp 7k d95au405 pin 6: ign out 9k d95au406 7.5v 7.5v 5.7v 780k 7.5v 28k 23k 33k pin 7: vs 4k d95au407 pin 9: out 5v 3.8k d95au408 pin 10: out 8.25v 123k d95au409 pin 11: stand-by 5v L4953K 5/8
d95au410 7.5v 7.5v 7.5v pin 12: st-cap d95au411 30k pin 13: lvw / fault d95au412 70k pin 14: reset 4k d95au413 7.5v 18.5k 20k 2.1k 10k pin 15: en 16v L4953K 6/8
multiwatt15 v dim. mm inch min. typ. max. min. typ. max. a 5 0.197 b 2.65 0.104 c 1.6 0.063 d 1 0.039 e 0.49 0.55 0.019 0.022 f 0.66 0.75 0.026 0.030 g 1.02 1.27 1.52 0.040 0.050 0.060 g1 17.53 17.78 18.03 0.690 0.700 0.710 h1 19.6 0.772 h2 20.2 0.795 l 21.9 22.2 22.5 0.862 0.874 0.886 l1 21.7 22.1 22.5 0.854 0.870 0.886 l2 17.65 18.1 0.695 0.713 l3 17.25 17.5 17.75 0.679 0.689 0.699 l4 10.3 10.7 10.9 0.406 0.421 0.429 l7 2.65 2.9 0.104 0.114 m 4.25 4.55 4.85 0.167 0.179 0.191 m1 4.63 5.08 5.53 0.182 0.200 0.218 s 1.9 2.6 0.075 0.102 s1 1.9 2.6 0.075 0.102 dia1 3.65 3.85 0.144 0.152 outline and mechanical data L4953K 7/8
information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsib ility for the cons equences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specification mentioned in this pu blication are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectron ics products are not authorized for use as critical components in life support devices or systems without express written approval of stmicr oelectronics. the st logo is a registered trademark of stmicroelectronics ? 2000 stmicroelectronics C printed in italy C all rights reserved stmicroelectronics group of companies australia - brazil - china - finland - france - germany - hong kong - india - italy - japan - malaysia - malta - morocco - singapore - spain - sweden - switzerland - united kingdom - u.s.a. http://www.st.com L4953K 8/8
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