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L4953K Datasheet(PDF) 3 Page - STMicroelectronics

Part # L4953K
Description  MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L4953K Datasheet(HTML) 3 Page - STMicroelectronics

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ELECTRICAL CHARACTERISTICS (VS = 14V, Tamb =25
°C, unless otherwise specified.)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VS
Operating Supply Voltage
11
18
V
En
Output Noise Voltage
Any reg. supply,
f = 100Hz to 200KHz
200
400
µV
Tshud
Thermal Shutdown Junction
Temperature
155
°C
5V STAND-BY OUTPUT VOLTAGE
V5st-by
Stand-by Output Voltage
ILoad = 5mA
4.75
5
5.25
V
∆Vline
Line Regulation
11V < VS < 16V
5
50
mV
∆Vload
Load Regulation
5mA < Iout < 100mA
45
150
mV
Vdropout
Dropout Voltage
Iout = 100mA, VS = 5.5V
0.2
0.6
V
Iqst-by
Quiescent Current @ Stand-by
ILoad = 5mA
0.3
0.5
mA
5V/1000mA SWITCHED OUTPUT VOLTAGE
Vout5
5V Output Voltage
no load
4.75
5
5.25
V
∆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
Iq
Quiescent Current
75mA < Iout < 1A
30
100
mA
SWon
Switch ON
3.5
V
SW off
Switch OFF
1.5
V
SW hyst
Switch Hysteresis
100
200
350
mV
Rin
Input Impedance
25
40
50
K
Ω
8.25V/500mA SWITCHED OUTPUT VOLTAGE
Vout
8.25V Output Voltage
no load
7.9
8.25
8.6
V
∆Vline
Line Regulation
11V < VS < 18V
5
50
mV
∆Vload
Load Regulation
Iout = 500mA
12
50
mV
Vdropout
Dropout Voltage
Iout = 500mA, 5.5V < VS < 8.8V
0.4
0.9
V
Iq
Quiescent Current
Iout = 500mA
10
25
mA
SVR
Supply Voltage Rejection
f = 100Hz
f = 10KHz
55
40
75
dB
SWon
Switch ON
3.5
V
SW off
Switch OFF
1.5
V
SW hyst
Switch Hysteresis
100
200
350
mV
Rin
Input Impedance
25
40
50
K
Ω
HIGH SIDE DRIVER WITH CLAMPED OUTPUT (16V)
Vout16
Max. Output Voltage
VS = 18V
15
16.2
V
IO
Output Continuous Current
VS = 15V
1.5
A
Vdropout
Dropout Voltage
Iout = 1A, 6V < VS < 15V
0.4
0.9
V
SWon
Switch ON
3.5
V
SW off
Switch OFF
1.5
V
SW hyst
Switch Hysteresis
100
200
350
mV
Rin
Input Impedance
25
40
50
K
Ω
L4953K
3/8


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