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L4954 Datasheet(PDF) 2 Page - STMicroelectronics

Part # L4954
Description  QUAD MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO
PDF  7 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L4954 Datasheet(HTML) 2 Page - STMicroelectronics

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ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VS
DC Operating Supply Voltage
-0.6 to 26.5
V
VS
Transient Supply Overvoltages, rise time = 10ms
delay time = 115ms
34
V
VS,ovs
Overvoltage Shutdown
27
V
Vin
Input Voltages (EN1, EN2, EN3)
-0.6 to 6.0
V
Vout
Output Voltages (LVWarn, RESET)
-0.6 to 6.0
V
Top
Operating Temperature Range
-40 to 85
°C
Tstg
Storage Temperature Range
-40 to 150
°C
THERMAL DATA
Symbol
Parameter
Value
Unit
Rth j-case
Thermal Resistance Junction-case
2
°C/W
1
2
3
4
5
6
7
9
10
11
8
EN2
EN1
RESET
GND
LVWarn
5V REG4-STBY
ST CAP
HSD3-0.3A
HSD2-0.3A
VS
HSD1-2A
TAB CONNECTED TO PIN 8
13
14
15
12
10V REG1
8.5V REG2
5V REG3
EN3
D95AU347
PIN CONNECTION
+VS
1000
µF
0.1
µF
2
10
11
EN1
EN2
12
EN3
1
HSD1
3
HSD2
4
HSD3
5
STCAP
0.1
µF
15
8
0.1
µF
47K
Ω
47K
Ω
7
9
6
10
µF(*)
10
µF(*)
10
µF(*)
14
13
10
µF(*)
10V-REG1
8.5V-REG2
5V-REG3
5V-REG4
-STBY
LVWarn
RESET
D95AU348C
L4954
470
µF
(*)ESR of output capacitors should be between 0.2
Ω to 5.0Ω
APPLICATION CIRCUIT
L4954
2/7



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