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L7809AB Datasheet(PDF) 5 Page - STMicroelectronics

Part # L7809AB
Description  PRECISION 1A REGULATORS
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L7809AB Datasheet(HTML) 5 Page - STMicroelectronics

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* Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
ELECTRICAL CHARACTERISTICS FOR L7805A (Vi = 10V, Io = 1 A, Tj = 0 to 125
oC (L7805AC),
Tj = -40 to 125
oC (L7805AB) unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
Vo
Output Voltage
Tj =25
oC
4.955.1
V
Vo
Output Voltage
Io = 5 mA to 1 A
Po
≤ 15 W
Vi = 7.5 to 20 V
4.855.2
V
∆Vo*
Line Regulation
Vi = 7.5 to 25 V
Io = 500 mA
Vi = 8 to 12 V
Vi = 8 to 12 V
Tj =25
oC
Vi = 7.3 to 20 V
Tj =25
oC
7
10
2
7
50
5
25
50
mV
mV
mV
mV
∆Vo*
Load Regulation
Io = 5 mA to 1 A
Io = 5 mA to 1.5 A
Tj =25
oC
Io = 250 to 750 mA
25
30
8
100
100
50
mV
mV
mV
Id
Quiescent Current
Tj =25
oC4.3
6
6
mA
∆Id
Quiescent Current Change
Vi = 8 to 25 V
Io = 500 mA
Vi = 7.5 to 20 V
Tj =25
oC
Io = 5 mA to 1 A
0.8
0.8
0.5
mA
mA
mA
SVR
Supply Voltage Rejection
Vi = 8 to 18 V
f = 120 Hz
Io = 500 mA
68
dB
Vd
Dropout Voltage
Io =1 A
Tj =25
oC2
V
eN
Output Noise Voltage
B = 10Hz to 100KHz
Tj =25
oC10
µV/Vo
Ro
Output Resistance
f = 1KHz
17
m
Isc
Short Circuit Current
Vi =35 V
Tamb =25
oC0.2
A
Iscp
Short Circuit Peack Current
Tj =25
oC2.2
A
Vo
∆T
Output Voltage Drift
-1. 1
mV/
oC
L7800AB/AC
5/17


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