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(R) 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 1/8 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 2/8 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 3/8 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 4/8 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 5/8 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 6/8 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 7/8 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 8/8 |
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