L4953

® L4953 MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO 3 OUTPUTS: 10V (500mA); 5V (1A); 5V (100mA) STANDBY OUT1 (10V) AND OUT2 (5V) WITH INDEPENDENT ENABLE CONTROL FOR STANDBY 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 BLOCK DIAGRAM VS 7 LOAD DUMP AND REV BATT PROT POW GND 3 5V, 100mA REGULATOR STAND-BY 5V, 1000mA REGULATOR SWITCHED 11 Multiwatt 15 ORDERING NUMBER: L4953 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 µP to store data. STAND-BY 5V 9 OUT 5V EN 5V STCAP EN 10V 1 12 10V, 500mA REGULATOR SWITCHED 10 OUT 10V 2 16V, 3A VOLTAGE CLAMP SWITCHED 4 OUT 16V EN 16V 15 VCAP REF GEN 5 Vref1 LVW THRESHOLD Vref2 Reset THRESHOLD IGNITION THRESHOLD OVERVOLTAGE UNDERVOLTAGE THERMAL PROT RESET IGN INP PROT SIG GND 8 6 D94AU053A 13 LVW/FAULT 14 RESET IGN OUT June 2000 1/6 L4953 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 2/6 L4953 ELECTRICAL CHARACTERISTICS (VS = 14V, Tamb = 25°C, unless otherwise specified.) Symbol VS En Parameter Operating Supply Voltage Output Noise Voltage Any reg. supply, f = 100Hz to 200KHz Test Condition Min. 11 200 Typ. Max. 18 400 Unit V µV 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 No load 11V < VS < 16V 5mA < IO < 100mA Iout = 100mA VS = 5.5V IL = 5mA 4.75 5 5 45 0.2 0.3 5.25 50 150 0.6 0.65 V mV mV V mA 5V/1000mA SWITCHED OUTPUT VOLTAGE Vout5 ∆Vline ∆Vload Vdropout Iq Ilim SWon SW off SW hyst R in 5V Output Voltage Line Regulation Load Regulation Dropout Voltage Quiescent Current Current Limit Switch ON Switch OFF Switch Hysteresis Input Impedance 100 10 200 40 no load 7V < VS < 18V 5mA < IO < 1A IO = 1A VS = 5,5V IO = 1A Output Shorted to GND 1 3.5 1.5 500 4.75 5 5 12 1 30 1.3 5.25 50 50 1.5 100 V mV mV V mA A V V mV KΩ 10V/500mA SWITCHED OUTPUT VOLTAGE Vout10 ∆Vline ∆Vload Vdropout Iq Ilim SVR SWon SW off SW hyst R in 10V Output Voltage Line Regulation Load Regulation Dropout Voltage Quiescent Current Current Limit Supply Voltage Rejection Switch ON Switch OFF Switch Hysteresis Input Impedance 100 10 200 40 no load 11V < VS < 18V 5mA < IO < 500mA 5.5V < VS < 10V IO = 500mA IO = 500mA Output Shorted to GND f = 3KHz 500 45 3.5 1.5 500 9.5 10 5 12 0.4 10 600 10.5 50 50 0.9 50 V mV mV V mA mA dB V V mV KΩ 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 10 200 40 VS = 18V VS = 16V 6V < Vin < 15V IO = 1A 3.5 1.5 500 14.6 2 0.4 0.9 16.2 V A V V V mV KΩ 3/6 L4953 ELECTRICAL CHARACTERISTICS (continued) FAULT Symbol TH fault HYSTfault OUTfault Ileak Parameter Fault Threshold Fault Threshold Hysteresis Fault Output Voltage Fault Leakage Current Test Condition Min. 7 100 200 Typ. Max. 8.5 300 1.5 50 Unit V mV V µA RESET THON reset HYST OUT reset reset Reset ON Threshold Reset Threshold Hysteresis Reset Output Voltage Reset Leakage Current 4.5 75 175 5.15 300 1.5 5 V mV V µA Ileak IGNITION TH ign HYST IGN IGN ign Ign Comparator Positive Threshold Ign Comparator Threshold Hysteresis Ignition Comparator Output High Ignition Comparator Output Low 5.5 100 3.5 –0.5 6 300 7.5 500 Vst-by 1.5 V mV V V high low 4/6 L4953 DIM. A B C D E F G G1 H1 H2 L L1 L2 L3 L4 L7 M M1 S S1 Dia1 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 1.27 17.78 0.55 0.75 1.52 18.03 20.2 22.2 22.1 17.5 10.7 4.55 5.08 22.5 22.5 18.1 17.75 10.9 2.9 4.85 5.53 2.6 2.6 3.85 0.862 0.874 0.854 0.870 0.695 0.679 0.406 0.104 0.167 0.182 0.075 0.075 0.144 0.689 0.421 0.179 0.200 0.019 0.026 0.040 0.050 0.690 0.700 0.772 mm TYP. inch TYP. MIN. MAX. 5 2.65 1.6 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 0.039 Multiwatt15 V 5/6 L4953 I nformation 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 6/6