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MC7812CT Datasheet(PDF) 12 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
12
ELECTRICAL CHARACTERISTICS (Vin = 19 V, IO = 1.0 A, TJ = Tlow to Thigh (Note 18), unless otherwise noted)
MC7812AB/MC7812AC
Characteristic
Symbol
Min
Typ
Max
Unit
Output Voltage (TJ = 25°C)
VO
11.75
12
12.25
Vdc
Output Voltage (5.0 mA
≤ IO ≤ 1.0 A, PD ≤ 15 W)
VO
11.5
12
12.5
Vdc
14.8 Vdc
≤ Vin ≤ 27 Vdc
Line Regulation (Note 19)
Regline
mV
14.8 Vdc
≤ Vin ≤ 30 Vdc, IO = 500 mA
3.8
18
16 Vdc
≤ Vin ≤ 22 Vdc, IO = 1.0 A
2.2
20
14.5 Vdc
≤ Vin ≤ 27 Vdc, TJ = 25°C
6.0
120
Load Regulation (Note 19)
Regload
mV
5.0 mA
≤ IO ≤ 1.5 A, TJ = 25°C
25
5.0 mA
≤ IO ≤ 1.0 A
25
Quiescent Current
IB
3.4
6.0
mA
Quiescent Current Change
DIB
mA
15 Vdc
≤ Vin ≤ 30 Vdc, IO = 500 mA
0.8
14.8 Vdc
≤ Vin ≤ 27 Vdc, TJ = 25°C
0.8
5.0 mA
≤ IO ≤ 1.0 A, TJ = 25°C
0.5
Ripple Rejection
RR
55
60
dB
15 Vdc
≤ Vin ≤ 25 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25°C)
VI − VO
2.0
Vdc
Output Noise Voltage (TA = 25°C)
Vn
10
mV/VO
10 Hz
≤ f ≤ 100 kHz
Output Resistance (f = 1.0 kHz)
rO
1.1
m
W
Short Circuit Current Limit (TA = 25°C)
ISC
0.2
A
Vin = 35 Vdc
Peak Output Current (TJ = 25°C)
Imax
2.2
A
Average Temperature Coefficient of Output Voltage
TCVO
−0.8
mV/
°C
18. Tlow =0°C for MC78XXAC, C
Thigh = +125°C for MC78XXAC, C, NCV7805
=
*40°C for MC78XXB, MC78XXAB, NCV7805
19. 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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