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參數資料
| 型號： | L4953K |
| 廠商： | 意法半導體 |
| 英文描述： | Multifunction Voltage Regulator for Car Radio(用于汽車收音機的多功能電壓穩壓器) |
| 中文描述： | 多功能電壓調節器汽車收音機（用于汽車收音機的多功能電壓穩壓器） |
| 文件頁數： | 1/8頁 |
| 文件大小： | 69K |
| 代理商： | L4953K |
L4953K
MULTIFUNCTIONVOLTAGE REGULATOR FOR CAR RADIO
PRELIMINARY DATA
3 OUTPUTS:
8.25V
STANDBY
OUT1 (8.25V) AND OUT2 (5V) WITH INDE-
PENDENT ENABLE CONTROL FOR STAND-
BY MODE
1.5A HIGH SIDE DRIVER WITH CLAMPED
OUTPUT (16V)
LOGIC OUTPUT FOR:
– SUPPLYUNDERVOLTAGE (LVW)
– OVERVOLTAGE (FAULT)
– THERMAL PROTECTION(FAULT)
RESET FUNCTION
IGNITION COMPARATOR
REVERSE BATTERY AND LOAD DUMP
PROTECTION
THERMAL SHUTDOWN
(500mA);
5V
(1A);
5V
(100mA)
DESCRIPTION
The L4953K contains a triple voltage regulator
and a power switch.
The IC includes a monitoring circuit to warn if a
low voltage or no voltageconditionis 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 sup-
ply capacitor that will hold enough energy for the
5V Stand-byline to allow the
μ
P to store data.
This is advanced information on anew product now in development or undergoing evaluation. Details are subject to change without notice.
November 1995
5V,
100mA
REGULATOR
STAND-BY
LOAD
DUMP
AND
REV
BATT PROT
REF
GEN
5V,
1000mA
REGULATOR
SWITCHED
8.25V,
500mA
REGULATOR
SWITCHED
16V,
1.5A
VOLTAGE
CLAMP
SWITCHED
OVERVOLTAGE
UNDERVOLTAGE
THERMAL
PROT
RESET
VCAP
Vref1 LVW THRESHOLD
Vref2 Reset THRESHOLD
IGNITION THRESHOLD
PROT
VS
7
SIG GND
3
EN 5V
1
STCAP
12
EN 8.25V
2
EN 16V
15
11
STAND-BY 5V
9
OUT 5V
10
OUT 8.25V
4
OUT 16V
14
13
6
IGN OUT
LVW/FAULT
RESET
IGN INP
5
D94AU213B
POW GND
8
BLOCK DIAGRAM
Multiwatt 15
ORDERING NUMBER:
L4953K
1/8
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| L4955V33 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5A ULDO LINEAR REGULATORS FAMILY |
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