L4953

L4953 STMICROELECTRONICS | Alldatasheet

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Technical content

MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO

3 OUTPUTS:

10V (500mA); 5V (1A); 5V (100mA) STANDBY OUT1 (10V) AND OUT2 (5V) WITH INDE- PENDENT ENABLE CONTROL FOR STAND- BY MODE 3A HIGH SIDE DRIVER WITH CLAMPED OUTPUT (16V) LOGIC OUTPUT FOR: – SUPPLY UNDERVOLTAGE (LVW) – OVERVOLTAGE – THERMAL PROTECTION RESET FUNCTION IGNITION COMPARATOR REVERSE BATTERY AND LOAD DUMP PROTECTION THERMAL SHUTDOWN

DESCRIPTION

The L4953 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 theµP to store data. June 2000 5V, 100mA REGULATOR STAND-BYLOAD DUMP AND REV BATT PROT REF GEN 5V, 1000mA REGULATOR SWITCHED 10V, 500mA REGULATOR SWITCHED 16V, 3A VOLTAGE CLAMP SWITCHED OVERVOLTAGE UNDERVOLTAGE THERMAL PROT RESET VCAP Vref1 LVW THRESHOLD Vref2 Reset THRESHOLD IGNITION THRESHOLDPROT VS POW GND EN 5V STCAP EN 10V EN 16V STAND-BY 5V OUT 5V OUT 10V OUT 16V 14136 IGN OUT LVW/FAULT RESET IGN INP D94AU053A SIG GND BLOCK DIAGRAM Multiwatt 15 ORDERING NUMBER: L4953

Symbol Parameter Value Unit V SDC DC Operating Supply Voltage –14 to 28 V VSTR Transient Supply Voltage 50 V IO Output Current internally limited Top Operating Temperature Range –40 to 85 °C Tstg Storage Temperature –55 to 150 °C THERMAL DATA Symbol Parameter Value Unit R th j-case Thermal Resistance Junction-case 2 °C/W STBY5V OUT 8.25V OUT 5V PGND VS IGNOUT IGNINP OUT 16V SGND EN 8.25V EN 5V TAB CONNECTED TO PIN 8 EN 16V RESET LVW/FAULT STCAP D94AU054B PIN CONNECTION (Top view) L4953

ELECTRICAL CHARACTERISTICS (VS = 14V, Tamb =2 5°C, unless otherwise specified.) Symbol Parameter Test Condition Min. Typ. Max. Unit VS Operating Supply Voltage 11 18 V En Output Noise Voltage Any reg. supply, f = 100Hz to 200KHz 200 400 µV 5V STAND-BY OUTPUT VOLTAGE V5st-by Stand-by Output Voltage No load 4.75 5 5.25 V Δ Vline Line Regulation 11V < V S < 16V 5 50 mV Δ Vload Load Regulation 5mA < I O < 100mA 45 150 mV Vdropout Dropout Voltage I out = 100mA V S = 5.5V 0.2 0.6 V Iqst-by Quiescent Current @ Stand-by IL = 5mA 0.3 0.65 mA 5V/1000mA SWITCHED OUTPUT VOLTAGE Vout5 5V Output Voltage no load 4.75 5 5.25 V Δ Vline Line Regulation 7V < V S < 18V 5 50 mV Δ Vload Load Regulation 5mA < I O <1 A 1 2 5 0 m V Vdropout Dropout Voltage I O =1 A V S = 5,5V 1 1.5 V Iq Quiescent Current I O = 1A 30 100 mA Ilim Current Limit Output Shorted to GND 1 1.3 A SWon Switch ON 3.5 V SW off Switch OFF 1.5 V SW hyst Switch Hysteresis 100 200 500 mV R in Input Impedance 10 40 K Ω 10V/500mA SWITCHED OUTPUT VOLTAGE Vout10 10V Output Voltage no load 9.5 10 10.5 V Δ Vline Line Regulation 11V < V S < 18V 5 50 mV Δ Vload Load Regulation 5mA < I O < 500mA 12 50 mV Vdropout Dropout Voltage 5.5V < V S < 10V IO = 500mA 0.4 0.9 V Iq Quiescent Current I O = 500mA 10 50 mA Ilim Current Limit Output Shorted to GND 500 600 mA SVR Supply Voltage Rejection f = 3KHz 45 dB SWon Switch ON 3.5 V SW off Switch OFF 1.5 V SW hyst Switch Hysteresis 100 200 500 mV R in Input Impedance 10 40 K Ω HIGH SIDE DRIVER WITH CLAMPED OUTPUT (16V) Vout16 Max. Output Voltage V S = 18V 14.6 16.2 V IO Output Continuous Current V S = 16V 2 A Vdropout Dropout Voltage 6V < V in< 15V IO = 1A 0.4 0.9 V SWon Switch ON 3.5 V SW off Switch OFF 1.5 V SW hyst Switch Hysteresis 100 200 500 mV R in Input Impedance 10 40 K Ω L4953

ELECTRICAL CHARACTERISTICS (continued) FAULT Symbol Parameter Test Condition Min. Typ. Max. Unit TH fault Fault Threshold 7 8.5 V HYST fault Fault Threshold Hysteresis 100 200 300 mV OUT fault Fault Output Voltage 1.5 V Ileak Fault Leakage Current 50 µA RESET THON reset Reset ON Threshold 4.5 5.15 V HYST reset Reset Threshold Hysteresis 75 175 300 mV OUT reset Reset Output Voltage 1.5 V Ileak Reset Leakage Current 5 µA IGNITION TH ign Ign Comparator Positive Threshold 5.5 6 7.5 V HYST ign Ign Comparator Threshold Hysteresis 100 300 500 mV IGN high Ignition Comparator Output High 3.5 Vst-by V IGN low Ignition Comparator Output Low –0.5 1.5 V L4953

DIM. mm inch 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 H1 19.6 0.772 H2 20.2 0.795 L2 17.65 18.1 0.695 0.713 L7 2.65 2.9 0.104 0.114 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 L4953

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  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 L4953