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MC7812CT Datasheet(PDF) 3 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
3
ELECTRICAL CHARACTERISTICS (Vin = 10 V, IO = 500 mA, TJ = Tlow to Thigh (Note 1), unless otherwise noted)
MC7805B, NCV7805
MC7805C
Characteristic
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Output Voltage (TJ = 25Β°C)
VO
4.8
5.0
5.2
4.8
5.0
5.2
Vdc
Output Voltage (5.0 mA
≀ IO ≀ 1.0 A, PD ≀ 15 W)
7.0 Vdc
≀ Vin ≀ 20 Vdc
8.0 Vdc
≀ Vin ≀ 20 Vdc
VO
βˆ’
4.75
βˆ’
5.0
βˆ’
5.25
4.75
βˆ’
5.0
βˆ’
5.25
βˆ’
Vdc
Line Regulation (Note 4)
7.5 Vdc
≀ Vin ≀ 20 Vdc, 1.0 A
8.0 Vdc
≀ Vin ≀ 12 Vdc
Regline
βˆ’
βˆ’
5.0
1.3
100
50
βˆ’
βˆ’
0.5
0.8
20
10
mV
Load Regulation (Note 4)
5.0 mA
≀ IO ≀ 1.0 A
5.0 mA
≀ IO ≀ 1.5 A (TA = 25Β°C)
Regload
βˆ’
βˆ’
1.3
0.15
100
50
βˆ’
βˆ’
1.3
1.3
25
25
mV
Quiescent Current
IB
βˆ’
3.2
8.0
βˆ’
3.2
6.5
mA
Quiescent Current Change
7.0 Vdc
≀ Vin ≀ 25 Vdc
5.0 mA
≀ IO ≀ 1.0 A (TA = 25Β°C)
DIB
βˆ’
βˆ’
βˆ’
βˆ’
βˆ’
0.5
βˆ’
βˆ’
0.3
0.08
1.0
0.8
mA
Ripple Rejection
8.0 Vdc
≀ Vin ≀ 18 Vdc, f = 120 Hz
RR
βˆ’
68
βˆ’
62
83
βˆ’
dB
Dropout Voltage (IO = 1.0 A, TJ = 25Β°C)
VI βˆ’ VO
βˆ’
2.0
βˆ’
βˆ’
2.0
βˆ’
Vdc
Output Noise Voltage (TA = 25Β°C)
10 Hz
≀ f ≀ 100 kHz
Vn
βˆ’
10
βˆ’
βˆ’
10
βˆ’
mV/VO
Output Resistance f = 1.0 kHz
rO
βˆ’
0.9
βˆ’
βˆ’
0.9
βˆ’
m
W
Short Circuit Current Limit (TA = 25Β°C)
Vin = 35 Vdc
ISC
βˆ’
0.2
βˆ’
βˆ’
0.6
βˆ’
A
Peak Output Current (TJ = 25Β°C)
Imax
βˆ’
2.2
βˆ’
βˆ’
2.2
βˆ’
A
Average Temperature Coefficient of Output Voltage
TCVO
βˆ’
βˆ’0.3
βˆ’
βˆ’
βˆ’0.3
βˆ’
mV/
Β°C
1. Tlow =0Β°C for MC78XXAC, C, Thigh = +125Β°C for MC78XXAC, NCV7805
=
*40Β°C for MC78XXB, MC78XXAB, NCV7805
2. 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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