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 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 µP to store data. 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 EN 5V 3 12 EN 16V POW GND 9 8.25V, 500mA REGULATOR SWITCHED 10 16V, 1.5A VOLTAGE CLAMP SWITCHED 4 OUT 5V OUT 8.25V OUT 16V 15 VCAP 5 PROT OVERVOLTAGE UNDERVOLTAGE THERMAL PROT RESET Vref1 LVW THRESHOLD Vref2 Reset THRESHOLD IGNITION THRESHOLD 8 6 D94AU213B June 2000 5V, 1000mA REGULATOR SWITCHED STAND-BY 5V 2 REF GEN IGN INP 11 1 STCAP EN 8.25V 5V, 100mA REGULATOR STAND-BY IGN OUT 13 LVW/FAULT 14 RESET 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 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 2/8 Parameter Thermal Resistance Junction-case Value Unit 2 °C/W L4953K ELECTRICAL CHARACTERISTICS (VS = 14V, Tamb = 25°C, unless otherwise specified.) Symbol Parameter VS Operating Supply Voltage En Output Noise Voltage Tshu d Test Condition Min. Typ. Max. 18 V 200 400 µV 11 Any reg. supply, f = 100Hz to 200KHz Thermal Shutdown Junction Temperature Unit °C 155 5V STAND-BY OUTPUT VOLTAGE V5st-by Stand-by Output Voltage ILoad = 5mA ∆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 < Iout < 100mA 45 150 mV Iout = 100mA, VS = 5.5V 0.2 0.6 V ILoad = 5mA 0.3 0.5 mA 5 5.25 V 5V/1000mA SWITCHED OUTPUT VOLTAGE Vout5 5V Output Voltage no load 4.75 ∆Vline Line Regulation 7V < VS < 18V 5 50 mV ∆Vload Load Regulation 5mA < Iout < 1A 12 50 mV Vdropout Dropout Voltage Iout = 1A, VS = 5.5V 1 1.5 V Quiescent Current 75mA < Iout < 1A 30 100 mA 1.5 V Iq SWon Switch ON SW off Switch OFF 3.5 V SW hyst Switch Hysteresis 100 200 350 mV R in Input Impedance 25 40 50 KΩ 7.9 8.25 5 12 0.4 10 75 8.6 50 50 0.9 25 V mV mV V mA dB 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 no load 11V < VS < 18V Iout = 500mA Iout = 500mA, 5.5V < VS < 8.8V Iout = 500mA f = 100Hz f = 10KHz Switch ON Switch OFF Switch Hysteresis Input Impedance 55 40 3.5 100 25 200 40 1.5 350 50 V V mV KΩ 16.2 V HIGH SIDE DRIVER WITH CLAMPED OUTPUT (16V) Vout16 Max. Output Voltage VS = 18V 15 Output Continuous Current VS = 15V 1.5 Vdropout Dropout Voltage Iout = 1A, 6V < VS < 15V SWon Switch ON SW off Switch OFF IO A 0.4 0.9 V 1.5 V 3.5 V SW hyst Switch Hysteresis 100 200 350 mV R in Input Impedance 25 40 50 KΩ 3/8 L4953K ELECTRICAL CHARACTERISTICS (continued) LVW/FAULT (referred to VS) Symbol THON LVW THOFF LVW ∆(LVW-out 8.25) HYST OUTLW Ileak Min. Typ. Max. Unit LVW ON Threshold Parameter Test Condition 8.55 9.00 9.45 V LVW OFF Threshold 8.75 9.20 9.65 LVW-Vout 8.25 0.5 0.65 Threshold Hysteresis 50 200 V V 350 mV LVW Output Voltage 1.5 V Leakage Current 50 µA V RESET (referred to 5V st-by) THON reset Reset ON Threshold 3.6 3.8 4 THOFF Reset OFF Threshold 3.8 4 4.2 V Reset Threshold Hysteresis 50 100 250 mV HYST OUT reset reset reset Ileak Reset Output Voltage 1.5 V Reset Leakage Current 50 µA IGNITION TH ign HYST IGN ign high Ign Comparator Positive Threshold 5.5 6.5 7.5 V Ign Comparator Threshold Hysteresis 100 300 500 mV Ignition Comparator Output High 3.5 Vst-by V CIRCUIT CONFIGURATION - PIN EQUIVALENT CIRCUITS PIN 1: EN 5V PIN 2: EN 8.25V PIN 4: OUT 16V 20K 2.1K 6.5K 18.5K 10K D95AU402 4/8 D95AU403 L4953K PIN 5: ING INP PIN 6: IGN OUT 36.3K 9.7K 5.7V 7K 5.3K D95AU404 PIN 7: VS D95AU405 PIN 9: OUT 5V 7.5V 23K 7.5V 7.5V 780K 5.7V 33K 4K 9K D95AU407 28K D95AU406 PIN 10: OUT 8.25V PIN 11: STAND-BY 5V 3.8K D95AU408 123K D95AU409 5/8 L4953K PIN 12: ST-CAP PIN 13: LVW / FAULT 7.5V 7.5V 7.5V 30K D95AU410 D95AU411 PIN 14: RESET PIN 15: EN 16V 20K 7.5V 4K 18.5K 2.1K 70K 10K D95AU412 D95AU413 6/8 L4953K DIM. A B C D E F G G1 MIN. mm TYP. MAX. 5 2.65 1.6 MIN. 0.55 0.75 1.52 18.03 0.019 0.026 0.040 0.690 1 0.49 0.66 1.02 17.53 1.27 17.78 H1 H2 L L1 L2 21.9 21.7 17.65 22.2 22.1 L3 L4 L7 M M1 17.25 10.3 2.65 4.25 4.63 17.5 10.7 S S1 Dia1 inch TYP. MAX. 0.197 0.104 0.063 OUTLINE AND MECHANICAL DATA 0.039 19.6 0.050 0.700 0.022 0.030 0.060 0.710 0.772 20.2 22.5 22.5 18.1 0.862 0.854 0.695 0.874 0.870 17.75 10.9 2.9 4.85 5.53 0.679 0.406 0.104 0.167 0.182 0.689 0.421 1.9 1.9 2.6 2.6 0.075 0.075 0.102 0.102 3.65 3.85 0.144 0.152 4.55 5.08 0.179 0.200 0.795 0.886 0.886 0.713 0.699 0.429 0.114 0.191 0.218 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 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