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MC7812CT Datasheet(PDF) 8 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
8
ELECTRICAL CHARACTERISTICS (Vin = 14 V, IO = 1.0 A, TJ = Tlow to Thigh (Note 11), unless otherwise noted)
MC7808AB/MC7808AC
Characteristic
Symbol
Min
Typ
Max
Unit
Output Voltage (TJ = 25°C)
VO
7.84
8.0
8.16
Vdc
Output Voltage (5.0 mA
≤ IO ≤ 1.0 A, PD ≤ 15 W)
10.6 Vdc
≤ Vin ≤ 23 Vdc
VO
7.7
8.0
8.3
Vdc
Line Regulation (Note 12)
10.6 Vdc
≤ Vin ≤ 25 Vdc, IO = 500 mA
11 Vdc
≤ Vin ≤ 17 Vdc, IO = 1.0 A
10.4 Vdc
≤ Vin ≤ 23 Vdc, TJ = 25°C
Regline
6.0
1.7
5.0
15
18
15
mV
Load Regulation (Note 12)
5.0 mA
≤ IO ≤ 1.5 A, TJ = 25°C
5.0 mA
≤ IO ≤ 1.0 A
250 mA
≤ IO ≤ 750 mA
Regload
1.4
1.0
0.22
25
25
15
mV
Quiescent Current
IB
3.3
6.0
mA
Quiescent Current Change
11 Vdc
≤ Vin ≤ 25 Vdc, IO = 500 mA
10.6 Vdc
≤ Vin ≤ 23 Vdc, IO = 1.0 A, TJ = 25°C
5.0 mA
≤ IO ≤ 1.0 A
DIB
0.8
0.8
0.5
mA
Ripple Rejection
11.5 Vdc
≤ Vin ≤ 21.5 Vdc, f = 120 Hz, IO = 500 mA
RR
56
62
dB
Dropout Voltage (IO = 1.0 A, TJ = 25°C)
VI − VO
2.0
Vdc
Output Noise Voltage (TA = 25°C)
10 Hz
≤ f ≤ 100 kHz
Vn
10
mV/VO
Output Resistance f = 1.0 kHz
rO
0.9
m
W
Short Circuit Current Limit (TA = 25°C)
Vin = 35 Vdc
ISC
0.2
A
Peak Output Current (TJ = 25°C)
Imax
2.2
A
Average Temperature Coefficient of Output Voltage
TCVO
−0.4
mV/
°C
11. Tlow =0°C for MC78XXAC, C
Thigh = +125°C for MC78XXAC, C, NCV7805
=
*40°C for MC78XXB, MC78XXAB, NCV7805
12. 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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