MULTIFUNCTION VOLTAGE REGULATOR RADIO OUTPUTS: 8.25V (500mA); (1A
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L4953K
MULTIFUNCTION VOLTAGE REGULATOR RADIO
OUTPUTS: 8.25V (500mA); (1A); (100mA) STANDBY OUT1 (8.25V) OUT2 (5V) WITH INDEPENDENT ENABLE CONTROL 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 LOAD DUMP PROTECTION THERMAL SHUTDOWN DESCRIPTION L4953K contains triple voltage regulator power switch. includes monitoring circuit warn BLOCK DIAGRAM
LOAD DUMP BATT PROT 100mA REGULATOR STAND-BY 1000mA REGULATOR SWITCHED
Multiwatt ORDERING NUMBER: L4953K
voltage voltage condition occuring. stand-by output active long possible even when thermal shutdown other fault conditions. STCAP allows reserve supply capacitor that will hold enough energy Stand-by line allow store data.
STAND-BY
STCAP 8.25V
8.25V, 500mA REGULATOR SWITCHED
8.25V
16V, 1.5A VOLTAGE CLAMP SWITCHED
VCAP Vref1 THRESHOLD Vref2 Reset THRESHOLD IGNITION THRESHOLD OVERVOLTAGE UNDERVOLTAGE THERMAL PROT RESET
PROT
D94AU213B
LVW/FAULT
RESET
June 2000
This advanced information product development undergoing evaluation. Details subject change without notice.
L4953K
ABSOLUTE MAXIMUM RATINGS
Symbol VSDC VSTR Tstg Transient Supply Voltage Output Current Operating Temperature Range Storage Temperature Parameter Operating Supply Voltage Value internally limited Unit
CONNECTION (Top view)
RESET LVW/FAULT STCAP STBY5V 8.25V PGND IGNOUT IGNINP SGND 8.25V
CONNECTED
D94AU054B
THERMAL DATA
Symbol j-case Parameter Thermal Resistance Junction-case Value Unit °C/W
L4953K
ELECTRICAL CHARACTERISTICS 14V, Tamb 25°C, unless otherwise specified.)
Symbol Tshud Parameter Operating Supply Voltage Output Noise Voltage Thermal Shutdown Junction Temperature reg. supply, 100Hz 200KHz Test Condition Min. Typ. Max. Unit
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 ILoad Iout 100mA Iout 100mA, 5.5V ILoad 4.75 5.25
5V/1000mA SWITCHED OUTPUT VOLTAGE
Vout5 Vline Vload Vdropout SWon hyst Output Voltage Line Regulation Load Regulation Dropout Voltage Quiescent Current Switch Switch Switch Hysteresis Input Impedance load Iout Iout 5.5V 75mA Iout 4.75 5.25
8.25V/500mA SWITCHED OUTPUT VOLTAGE
Vout Vline Vload Vdropout SWon hyst 8.25V Output Voltage Line Regulation Load Regulation Dropout Voltage Quiescent Current Supply Voltage Rejection Switch Switch Switch Hysteresis Input Impedance load Iout 500mA Iout 500mA, 5.5V 8.8V Iout 500mA 100Hz 10KHz 8.25
HIGH SIDE DRIVER WITH CLAMPED OUTPUT (16V)
Vout16 Vdropout SWon hyst Max. Output Voltage Output Continuous Current Dropout Voltage Switch Switch Switch Hysteresis Input Impedance Iout 16.2
L4953K
ELECTRICAL CHARACTERISTICS (continued) LVW/FAULT (referred
Symbol THON THOFF (LVW-out 8.25) HYST OUTLW Ileak Parameter Threshold Threshold LVW-Vout 8.25 Threshold Hysteresis Output Voltage Leakage Current Test Condition Min. 8.55 8.75 Typ. 9.00 9.20 0.65 Max. 9.45 9.65 Unit
RESET (referred st-by)
THON reset THOFF reset HYST reset reset Ileak Reset Threshold Reset Threshold Reset Threshold Hysteresis Reset Output Voltage Reset Leakage Current
IGNITION
HYST high Comparator Positive Threshold Comparator Threshold Hysteresis Ignition Comparator Output High Vst-by
CIRCUIT CONFIGURATION EQUIVALENT CIRCUITS 8.25V
2.1K 18.5K
D95AU402
6.5K
D95AU403
L4953K
36.3K
9.7K
5.7V
5.3K
D95AU404
D95AU405
7.5V 7.5V 5.7V
7.5V 780K
D95AU406
D95AU407
8.25V
STAND-BY
3.8K
123K
D95AU408
D95AU409
L4953K
ST-CAP
FAULT
7.5V 7.5V 7.5V
D95AU410
D95AU411
RESET
7.5V 18.5K 2.1K
D95AU412
D95AU413
L4953K
MIN. Dia1 21.9 21.7 17.65 17.25 10.3 2.65 4.25 4.63 3.65 4.55 5.08 17.5 10.7 22.2 22.1 0.49 0.66 1.02 17.53 19.6 20.2 22.5 22.5 18.1 17.75 10.9 4.85 5.53 3.85 0.862 0.854 0.695 0.679 0.406 0.104 0.167 0.182 0.075 0.075 0.144 0.179 0.200 0.689 0.421 0.874 0.870 1.27 17.78 0.55 0.75 1.52 18.03 0.019 0.026 0.040 0.690 0.772 0.795 0.886 0.886 0.713 0.699 0.429 0.114 0.191 0.218 0.102 0.102 0.152 0.050 0.700 TYP. MAX. 2.65 0.039 0.022 0.030 0.060 0.710 MIN. inch TYP. MAX. 0.197 0.104 0.063
DIM.
OUTLINE MECHANICAL DATA
Multiwatt15
L4953K
Information furnished believed accurate reliable. However, STMicroelectronics assumes responsibility consequences such information infringement patents other rights third parties which result from use. license granted implication otherwise under patent patent rights STMicroelectronics. Specification mentioned this publication subject change without notice. This publication supersedes replaces information previously supplied. STMicroelectronics products authorized critical components life support devices systems without express written approval STMicroelectronics. logo registered trademark STMicroelectronics 2000 STMicroelectronics Printed Italy Rights Reserved STMicroelectronics GROUP 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
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