L4953G MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO PRELIMINARY DATA 3 OUTPUTS: 9.2V (500mA); 5V (1A); 5V (100mA) STANDBY OUT1 (9.2V) AND OUT2 (5V) WITH INDEPENDENT ENABLE CONTROL FOR STANDBY MODE 2A 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 Multiwatt15 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 supply capacitor that will hold enough energy for the 5V Stand-by line to allow the µP to store data. DESCRIPTION The L4953G contains a triple voltage regulator and a power switch. BLOCK DIAGRAM VS 7 LOAD DUMP POW GND EN 5V 3 11 5V, 1000mA REGULATOR SWITCHED 9 9.2V, 500mA REGULATOR SWITCHED 10 STAND-BY 5V 12 4 OUT 16V 15 VCAP REF GEN IGN INP OUT 9.2V 2 16V, 2A VOLTAGE CLAMP SWITCHED EN 16V OUT 5V 1 STCAP EN 9.2V 5V, 100mA REGULATOR STAND-BY 5 PROT OVERVOLTAGE UNDERVOLTAGE THERMAL PROT RESET Vref1 LVW THRESHOLD Vref2 Reset THRESHOLD IGNITION THRESHOLD SIG GND 8 6 D97AU579 IGN OUT 13 LVW/FAULT 14 RESET April 1999 This is preliminary information on a new product now in development. Details are subject to change without notice. 1/6 L4953G ABSOLUTE MAXIMUM RATINGS Symbol Parameter V SDC DC Operating Supply Voltage VSTR Transient Supply Voltage Value Unit –0.6 to 28 V 50 V IO Output Current Top Operating Temperature Range internally limited –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 9.2V 9 OUT 5V 8 PGND 7 VS 6 IGNOUT 5 IGNINP 4 OUT 16V 3 SGND 2 EN 9.2V 1 EN 5V D97AU580 THERMAL DATA Symbol Rth j-case 2/6 Parameter Thermal Resistance Junction-case Value Unit 2 °C/W L4953G ELECTRICAL CHARACTERISTICS (VS = 14V, Tamb = –40 to 85°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 5 5.25 V ∆Vline Line Regulation 11V < VS < 16V 5 50 mV ∆Vload Vdropout Load Regulation 5mA < IO < 100mA 12 100 mV Dropout Voltage Iout = 100mA Vbat = 5.5V 0.2 0.6 V Quiescent Current @ Stand-by SW < 1.5V 5V ST-BY = 100µA Load 0.3 0.65 mA Iqst-by 4.75 5V/1000mA SWITCHED OUTPUT VOLTAGE Vout5 5V Output Voltage no load 5 5.25 V ∆Vline Line Regulation 7V < VS < 18V 4.75 5 50 mV ∆Vload Vdropout Load Regulation 5mA < IO < 1A 12 50 mV Dropout Voltage Vbat = 5.5V IO = 1A 1.0 1.5 V Iq Quiescent Current 75mA < IO < 1A 30 100 mA Ilim Current Limit Output Shorted to GND SWon Switch ON IO = 75mA SW off Switch OFF 1 1.3 A 3.5 V SW hyst Switch Hysteresis 100 200 R in Input Impedance 10 40 1.5 V 500 mV KΩ 9.2V/500mA SWITCHED OUTPUT VOLTAGE 9.2 ±5% Vout9.2 9.2V Output Voltage no load ∆Vline Line Regulation 11V < VS < 18V 5 50 mV V ∆Vload Load Regulation 5mA < IO < 500mA 12 50 mV Vdropout Dropout Voltage 5.5V < Vin < 9.2V IO = 500mA 0.4 0.9 V Iq Quiescent Current 50mA < IO < 500mA 10 25 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 75 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 Max. Output Voltage VS = 18V 14.6 Output Continuous Current VS = 16V 2 Vdropout Dropout Voltage 5V < Vin < 15V IO = 2A SWon Switch ON SW off Switch OFF IO 16.2 V A 0.5 1.0 V 1.5 V 500 mV 3.5 V SW hyst Switch Hysteresis 100 200 R in Input Impedance 10 40 KΩ 3/6 L4953G ELECTRICAL CHARACTERISTICS (continued) FAULT Symbol TH fault Parameter Test Condition Fault Threshold Min. Typ. 7 200 Unit 8.5 V 400 mV HYSTfault Fault Threshold Hysteresis OUTfault Fault Output Voltage 1.5 V Fault Leakage Current 50 µA 0.97 Vst-by 0.99 Vst-by 300 mV Ileak 100 Max. RESET THON reset Reset ON Threshold THOFF Reset OFF Threshold HYST OUT reset reset reset MIN @ VMEM = 4.75V MAX @ V MEM = 5.25V 0.97 Reset Threshold Hysteresis Reset Output Voltage 0.938 75 175 ILOAD = 2mA Reset Leakage Current Ileak 1.5 V 5.0 µA IGNITION TH ign HYST 4/6 ign Ign Comparator Positive Threshold 5.5 6 7.5 V 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 L4953G mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 5 0.197 B 2.65 0.104 C 1.6 0.063 D 1 OUTLINE AND MECHANICAL DATA 0.039 E 0.49 0.55 0.019 F 0.66 0.75 0.026 0.022 G 1.02 1.27 1.52 0.040 0.050 0.060 G1 17.53 17.78 18.03 0.690 0.700 0.710 H1 19.6 0.030 0.772 H2 20.2 0.795 L 21.9 22.2 22.5 0.862 0.874 0.886 L1 21.7 22.1 22.5 0.854 0.870 0.886 L2 17.65 18.1 0.695 L3 17.25 17.5 17.75 0.679 0.689 0.699 L4 10.3 10.7 10.9 0.406 0.421 0.429 L7 2.65 2.9 0.104 M 4.25 4.55 4.85 0.167 0.179 M1 4.63 5.08 5.53 0.182 0.200 S 1.9 2.6 0.075 0.713 0.114 0.191 0.218 0.102 S1 1.9 2.6 0.075 0.102 Dia1 3.65 3.85 0.144 0.152 Multiwatt15 V 5/6 L4953G 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 1999 STMicroelectronics – Printed in Italy – All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. http://www.st.com 6/6