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MC7812CT Datasheet(PDF) 7 Page - ON Semiconductor

Part No. MC7812CT
Description  1.0 A Positive Voltage Regulators
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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MC7800, MC7800A, NCV7805
http://onsemi.com
7
ELECTRICAL CHARACTERISTICS (Vin = 14 V, IO = 500 mA, TJ = Tlow to Thigh (Note 9), unless otherwise noted)
MC7808B
MC7808C
Characteristic
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Output Voltage (TJ = 25°C)
VO
7.7
8.0
8.3
7.7
8.0
8.3
Vdc
Output Voltage (5.0 mA
≤ IO ≤ 1.0 A, PD ≤ 15 W)
VO
Vdc
10.5 Vdc
≤ Vin ≤ 23 Vdc
7.6
8.0
8.4
11.5 Vdc
≤ Vin ≤ 23 Vdc
7.6
8.0
8.4
Line Regulation, TJ = 25°C, (Note 10)
Regline
mV
10.5 Vdc
≤ Vin ≤ 25 Vdc
6.0
160
6.0
32
11 Vdc
≤ Vin ≤ 17 Vdc
1.7
80
1.7
16
Load Regulation, TJ = 25°C (Note 10)
Regload
1.4
160
1.4
35
mV
5.0 mA
≤ IO ≤ 1.5 A
Quiescent Current
IB
3.3
8.0
3.3
8.0
mA
Quiescent Current Change
DIB
mA
10.5 Vdc
≤ Vin ≤ 25 Vdc
1.0
5.0 mA
≤ IO ≤ 1.0 A
0.5
0.5
Ripple Rejection
RR
62
56
62
dB
11.5 Vdc
≤ Vin ≤ 18 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25°C)
VI − VO
2.0
2.0
Vdc
Output Noise Voltage (TA = 25°C)
Vn
10
10
mV/VO
10 Hz
≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz
rO
0.9
0.9
m
W
Short Circuit Current Limit (TA = 25°C)
ISC
0.2
0.2
A
Vin = 35 Vdc
Peak Output Current (TJ = 25°C)
Imax
2.2
2.2
A
Average Temperature Coefficient of Output Voltage
TCVO
−0.4
−0.4
mV/
°C
9. Tlow =0°C for MC78XXAC, C
Thigh = +125°C for MC78XXAC, C, NCV7805
=
*40°C for MC78XXB, MC78XXAB, NCV7805
10. 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.




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