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L78S05C 数据表(PDF) 8 Page - STMicroelectronics

部件名 L78S05C
功能描述  2A POSITIVE VOLTAGE REGULATORS
PDF  21 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L78S05C 数据表(HTML) 8 Page - STMicroelectronics

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ELECTRICAL CHARACTERISTICS FOR L78S18 (refer to the test circuits, Tj =25
oC,
Vi = 26V, Io = 500 mA unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
Vo
Output Voltage
17.1
18
18.9
V
Vo
Output Voltage
Io =1 A
Vi = 20.5 V
17
18
19
V
∆Vo
Line Regulation
Vi = 20.5 to 30 V
Vi = 22to 28V
360
180
mV
mV
∆Vo
Load Regulation
Io = 20 mA to 2 A
200
mV
Id
Quiescent Current
8mA
∆Id
Quiescent Current Change
Io = 20 mA to 1A
0.5
mA
∆Id
Quiescent Current Change
Io =20 mA Vi =22 to33 V
1
mA
∆Vo
∆T
Output Voltage Drift
Io = 5 mA
Tj = -55 to 150
oC
-1
mV/
oC
eN
Output Noise Voltage
B = 10Hz to 100KHz
110
µV
SVR
Supply Voltage Rejection
f = 120 Hz
49
dB
Vi
Operating Input Voltage
Io
≤ 1.5 A
21
V
Ro
Output Resistance
f = 1KHz
22
m
Ω
Isc
Short Circuit Current
Vi = 27 V
500
mA
Iscp
Short Circuit Peack Current
3
A
ELECTRICAL CHARACTERISTICS FOR L78S24 (refer to the test circuits, Tj =25
oC,
Vi = 33V, Io = 500 mA unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
Vo
Output Voltage
23
24
25
V
Vo
Output Voltage
Io =1 A
Vi = 27 V
22.8
24
25.2
V
∆Vo
Line Regulation
Vi = 27to 38V
Vi = 30to 36V
480
240
mV
mV
∆Vo
Load Regulation
Io = 20 mA to 2 A
250
mV
Id
Quiescent Current
8mA
∆Id
Quiescent Current Change
Io = 20 mA to 1A
0.5
mA
∆Id
Quiescent Current Change
Io =20 mA Vi = 8 to 25 V
1
mA
∆Vo
∆T
Output Voltage Drift
Io = 5 mA
Tj = -55 to 150
oC
-1.5
mV/
oC
eN
Output Noise Voltage
B = 10Hz to 100KHz
170
µV
SVR
Supply Voltage Rejection
f = 120 Hz
48
dB
Vi
Operating Input Voltage
Io
≤ 1.5 A
27
V
Ro
Output Resistance
f = 1KHz
23
m
Ω
Isc
Short Circuit Current
Vi = 27 V
500
mA
Iscp
Short Circuit Peack Current
3
A
L78S00 SERIES
8/21



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