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 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. 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 EN 5V 3 11 5V, 1000mA REGULATOR SWITCHED 9 10V, 500mA REGULATOR SWITCHED 10 12 VCAP 4 OUT 16V OVERVOLTAGE UNDERVOLTAGE THERMAL PROT RESET Vref1 LVW THRESHOLD Vref2 Reset THRESHOLD 5 IGN INP PROT IGNITION THRESHOLD 8 6 D94AU053A June 2000 OUT 10V 15 REF GEN SIG GND OUT 5V 2 16V, 3A VOLTAGE CLAMP SWITCHED EN 16V STAND-BY 5V 1 STCAP EN 10V 5V, 100mA REGULATOR STAND-BY IGN OUT 13 LVW/FAULT 14 RESET 1/6 L4953 ABSOLUTE MAXIMUM RATINGS Symbol Parameter V SDC DC Operating Supply Voltage VSTR Transient Supply Voltage Value Unit –14 to 28 V 50 V IO Output Current internally limited Top Operating Temperature Range –40 to 85 °C Tstg Storage Temperature –55 to 150 °C PIN CONNECTION (Top view) TAB CONNECTED TO PIN 8 15 EN 16V 14 RESET 13 LVW/FAULT 12 STCAP 11 STBY5V 10 OUT 8.25V 9 OUT 5V 8 PGND 7 VS 6 IGNOUT 5 IGNINP 4 OUT 16V 3 SGND 2 EN 8.25V 1 EN 5V D94AU054B THERMAL DATA Symbol Rth j-case 2/6 Parameter Thermal Resistance Junction-case Value Unit 2 °C/W L4953 ELECTRICAL CHARACTERISTICS (VS = 14V, Tamb = 25°C, unless otherwise specified.) Symbol Parameter VS Operating Supply Voltage En Output Noise Voltage Test Condition Min. Typ. Max. 18 V 200 400 µV 11 Any reg. supply, f = 100Hz to 200KHz Unit 5V STAND-BY OUTPUT VOLTAGE V5st-by Stand-by Output Voltage No load ∆Vline Line Regulation 11V < VS < 16V ∆Vload Load Regulation Vdropout Dropout Voltage Quiescent Current @ Stand-by Iqst-by 4.75 5 5.25 V 5 50 mV 5mA < IO < 100mA 45 150 mV Iout = 100mA VS = 5.5V 0.2 0.6 V IL = 5mA 0.3 0.65 mA 5V/1000mA SWITCHED OUTPUT VOLTAGE Vout5 5V Output Voltage no load 5 5.25 V ∆Vline Line Regulation 7V < VS < 18V 5 50 mV ∆Vload Load Regulation 5mA < IO < 1A 12 50 mV Vdropout Dropout Voltage IO = 1A VS = 5,5V 1 1.5 V Quiescent Current IO = 1A 30 100 mA Current Limit Output Shorted to GND Iq Ilim SWon SW off 4.75 Switch ON 1 1.3 A 3.5 V Switch OFF SW hyst Switch Hysteresis 100 200 R in Input Impedance 10 40 9.5 1.5 V 500 mV KΩ 10V/500mA SWITCHED OUTPUT VOLTAGE Vout10 10V Output Voltage no load 10 10.5 V ∆Vline Line Regulation 11V < VS < 18V 5 50 mV ∆Vload Load Regulation 5mA < IO < 500mA 12 50 mV Vdropout Dropout Voltage 5.5V < VS < 10V IO = 500mA 0.4 0.9 V Iq Quiescent Current IO = 500mA 10 50 mA Ilim Current Limit Output Shorted to GND Supply Voltage Rejection f = 3KHz SVR SWon Switch ON SW off Switch OFF 500 600 mA 45 dB 3.5 V SW hyst Switch Hysteresis 100 200 R in Input Impedance 10 40 1.5 V 500 mV KΩ HIGH SIDE DRIVER WITH CLAMPED OUTPUT (16V) Vout16 IO Vdropout Max. Output Voltage VS = 18V Output Continuous Current VS = 16V Dropout Voltage 6V < Vin < 15V SWon Switch ON SW off Switch OFF 14.6 16.2 V 0.9 V 1.5 V 500 mV 2 IO = 1A A 0.4 3.5 V SW hyst Switch Hysteresis 100 200 R in Input Impedance 10 40 KΩ 3/6 L4953 ELECTRICAL CHARACTERISTICS (continued) FAULT Symbol TH fault Parameter Fault Threshold Test Condition Min. Typ. 7 200 Unit 8.5 V 300 mV HYSTfault Fault Threshold Hysteresis OUTfault Fault Output Voltage 1.5 V Fault Leakage Current 50 µA 5.15 V 300 mV Ileak 100 Max. RESET THON reset Reset ON Threshold 4.5 HYST Reset Threshold Hysteresis 75 OUT reset reset 175 Reset Output Voltage Reset Leakage Current Ileak 1.5 V 5 µA IGNITION TH ign HYST IGN IGN 4/6 ign Ign Comparator Positive Threshold 5.5 6 7.5 V Ign Comparator Threshold Hysteresis 100 300 500 mV high Ignition Comparator Output High 3.5 Vst-by V low Ignition Comparator Output Low –0.5 1.5 V L4953 DIM. MIN. mm TYP. A B C D E F MIN. 0.55 0.75 0.019 0.026 0.022 0.030 1.52 18.03 0.040 0.050 0.690 0.700 0.772 0.060 0.710 1 0.49 0.66 1.27 17.78 inch TYP. MAX. 5 2.65 1.6 MAX. 0.197 0.104 0.063 0.039 G G1 H1 H2 1.02 17.53 19.6 L L1 L2 21.9 21.7 17.65 22.2 22.1 22.5 22.5 18.1 0.862 0.874 0.854 0.870 0.695 0.886 0.886 0.713 L3 L4 L7 M M1 17.25 10.3 2.65 4.25 4.63 17.5 10.7 17.75 10.9 2.9 4.85 5.53 0.679 0.406 0.104 0.167 0.182 0.699 0.429 0.114 0.191 0.218 S S1 Dia1 1.9 1.9 3.65 2.6 2.6 3.85 0.075 0.075 0.144 20.2 4.55 5.08 OUTLINE AND MECHANICAL DATA 0.795 0.689 0.421 0.179 0.200 0.102 0.102 0.152 Multiwatt15 V 5/6 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 6/6