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L4953K
MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO
3 OUTPUTS: 8.25V (500mA); 5V (1A); 5V (100mA) STANDBY OUT1 (8.25V) AND OUT2 (5V) WITH INDEPENDENT ENABLE CONTROL FOR STANDBY MODE 1.5A HIGH SIDE DRIVER WITH CLAMPED OUTPUT (16V) LOGIC OUTPUT FOR: - SUPPLY UNDERVOLTAGE (LVW) - OVERVOLTAGE(FAULT) - 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 BLOCK DIAGRAM
VS 7 LOAD DUMP AND REV BATT PROT SIG GND 3 5V, 100mA REGULATOR STAND-BY 5V, 1000mA REGULATOR SWITCHED 11
Multiwatt 15 ORDERING NUMBER: L4953K
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 supply capacitor that will hold enough energy for the 5V Stand-by line to allow the P to store data.
STAND-BY 5V
9
OUT 5V
EN 5V STCAP EN 8.25V
1 12 8.25V, 500mA REGULATOR SWITCHED 10
OUT 8.25V
2 16V, 1.5A VOLTAGE CLAMP SWITCHED 4
OUT 16V
EN 16V
15 VCAP REF GEN Vref1 LVW THRESHOLD Vref2 Reset THRESHOLD IGNITION THRESHOLD OVERVOLTAGE UNDERVOLTAGE THERMAL PROT RESET
IGN INP
5
PROT
POW GND
8 6
D94AU213B
13 LVW/FAULT
14 RESET
IGN OUT
June 2000
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This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
L4953K
ABSOLUTE MAXIMUM RATINGS
Symbol V SDC VSTR IO Top Tstg Transient Supply Voltage Output Current Operating Temperature Range Storage Temperature Parameter DC Operating Supply Voltage Value -14 to 28 50 internally limited -40 to 85 -55 to 150 C C Unit V V
PIN CONNECTION (Top view)
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
EN 16V RESET LVW/FAULT STCAP STBY5V OUT 8.25V OUT 5V PGND VS IGNOUT IGNINP OUT 16V SGND EN 8.25V EN 5V
TAB CONNECTED TO PIN 8
D94AU054B
THERMAL DATA
Symbol Rth j-case Parameter Thermal Resistance Junction-case Value 2 Unit C/W
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L4953K
ELECTRICAL CHARACTERISTICS (VS = 14V, Tamb = 25C, unless otherwise specified.)
Symbol VS En Tshu d Parameter Operating Supply Voltage Output Noise Voltage Thermal Shutdown Junction Temperature Any reg. supply, f = 100Hz to 200KHz Test Condition Min. 11 200 155 Typ. Max. 18 400 Unit V V C
5V STAND-BY OUTPUT VOLTAGE
V5st-by Vline Vload Vdropout Iqst-by Stand-by Output Voltage Line Regulation Load Regulation Dropout Voltage Quiescent Current @ Stand-by ILoad = 5mA 11V < VS < 16V 5mA < Iout < 100mA Iout = 100mA, VS = 5.5V ILoad = 5mA 4.75 5 5 45 0.2 0.3 5.25 50 150 0.6 0.5 V mV mV V mA
5V/1000mA SWITCHED OUTPUT VOLTAGE
Vout5 Vline Vload Vdropout Iq SWon SW off SW hyst R in 5V Output Voltage Line Regulation Load Regulation Dropout Voltage Quiescent Current Switch ON Switch OFF Switch Hysteresis Input Impedance 100 25 200 40 no load 7V < VS < 18V 5mA < Iout < 1A Iout = 1A, VS = 5.5V 75mA < Iout < 1A 3.5 1.5 350 50 4.75 5 5 12 1 30 5.25 50 50 1.5 100 V mV mV V mA V V mV K
8.25V/500mA SWITCHED OUTPUT VOLTAGE
Vout Vline Vload Vdropout Iq SVR SWon SW off SW hyst R in 8.25V Output Voltage Line Regulation Load Regulation Dropout Voltage Quiescent Current Supply Voltage Rejection Switch ON Switch OFF Switch Hysteresis Input Impedance no load 11V < VS < 18V Iout = 500mA Iout = 500mA, 5.5V < VS < 8.8V Iout = 500mA f = 100Hz f = 10KHz 7.9 8.25 5 12 0.4 10 75 8.6 50 50 0.9 25 V mV mV V mA dB V V mV K
55 40 3.5 100 25
200 40
1.5 350 50
HIGH SIDE DRIVER WITH CLAMPED OUTPUT (16V)
Vout16 IO Vdropout SWon SW off SW hyst R in Max. Output Voltage Output Continuous Current Dropout Voltage Switch ON Switch OFF Switch Hysteresis Input Impedance 100 25 200 40 VS = 18V VS = 15V Iout = 1A, 6V < VS < 15V 3.5 1.5 350 50 15 1.5 0.4 0.9 16.2 V A V V V mV K
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L4953K
ELECTRICAL CHARACTERISTICS (continued) LVW/FAULT (referred to VS)
Symbol THON THOFF
LVW LVW
Parameter LVW ON Threshold LVW OFF Threshold LVW-Vout 8.25 Threshold Hysteresis LVW Output Voltage Leakage Current
Test Condition
Min. 8.55 8.75 0.5 50
Typ. 9.00 9.20 0.65 200
Max. 9.45 9.65 350 1.5 50
Unit V V V mV V A
(LVW-out 8.25) HYST OUTLW Ileak
RESET (referred to 5V st-by)
THON reset THOFF HYST OUT
reset reset reset
Reset ON Threshold Reset OFF Threshold Reset Threshold Hysteresis Reset Output Voltage Reset Leakage Current
3.6 3.8 50
3.8 4 100
4 4.2 250 1.5 50
V V mV V A
Ileak
IGNITION
TH ign HYST IGN
ign
Ign Comparator Positive Threshold Ign Comparator Threshold Hysteresis Ignition Comparator Output High
5.5 100 3.5
6.5 300
7.5 500 Vst-by
V mV V
high
CIRCUIT CONFIGURATION - PIN EQUIVALENT CIRCUITS PIN 1: EN 5V PIN 2: EN 8.25V
PIN 4: OUT 16V
20K
2.1K 18.5K 10K
D95AU402
6.5K
D95AU403
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L4953K
PIN 5: ING INP
PIN 6: IGN OUT
36.3K
9.7K
5.7V
5.3K
D95AU404
D95AU405
7K
PIN 7: VS
PIN 9: OUT 5V
7.5V 7.5V 5.7V 9K
23K
7.5V 780K
33K
4K
28K
D95AU406
D95AU407
PIN 10: OUT 8.25V
PIN 11: STAND-BY 5V
3.8K
123K
D95AU408
D95AU409
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L4953K
PIN 12: ST-CAP
PIN 13: LVW / FAULT
7.5V 7.5V 7.5V
D95AU410
D95AU411
30K
PIN 14: RESET
PIN 15: EN 16V
20K 7.5V 4K 18.5K 2.1K
70K
D95AU412
D95AU413
10K
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L4953K
mm TYP. inch TYP.
DIM. A B C D E F G G1 H1 H2 L L1 L2 L3 L4 L7 M M1 S S1 Dia1
MIN.
MAX. 5 2.65 1.6 0.55 0.75 1.52 18.03 20.2 22.5 22.5 18.1 17.75 10.9 2.9 4.85 5.53 2.6 2.6 3.85
MIN.
MAX. 0.197 0.104 0.063 0.022 0.030 0.060 0.710 0.795 0.886 0.886 0.713 0.699 0.429 0.114 0.191 0.218 0.102 0.102 0.152
OUTLINE AND MECHANICAL DATA
1 0.49 0.66 1.02 17.53 19.6 21.9 21.7 17.65 17.25 10.3 2.65 4.25 4.63 1.9 1.9 3.65 22.2 22.1 17.5 10.7 4.55 5.08 0.019 0.026 0.040 0.690 0.772 0.862 0.854 0.695 0.679 0.406 0.104 0.167 0.182 0.075 0.075 0.144
0.039
1.27 17.78
0.050 0.700
0.874 0.870 0.689 0.421 0.179 0.200
Multiwatt15 V
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L4953K
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences 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 publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics (c) 2000 STMicroelectronics - Printed in Italy - 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
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