MC7800_14 Datasheet, PDF (18/31 Pages) ON Semiconductor – 1.0 A Positive Voltage Regulators

MC7800, MC7800A, MC7800AE, NCV7800
ELECTRICAL CHARACTERISTICS (V_in = 33 V, I_O = 1.0 A, T_J = T_low to 125°C (Note 31), unless otherwise noted)
MC7824AC
Characteristic
Symbol
Min
Typ
Max
Unit
Output Voltage (T_J = 25°C)
Output Voltage (5.0 mA ≤ I_O ≤ 1.0 A, P_D ≤ 15 W)
27.3 Vdc ≤ V_in ≤ 38 Vdc
Line Regulation (Note 32)
27 Vdc ≤ V_in ≤ 38 Vdc, I_O = 500 mA
30 Vdc ≤ V_in ≤ 36 Vdc, I_O = 1.0 A
30 Vdc ≤ V_in ≤ 36 Vdc, T_J = 25°C
26.7 Vdc ≤ V_in ≤ 38 Vdc, I_O = 1.0 A, T_J = 25°C
Load Regulation (Note 32)
5.0 mA ≤ I_O ≤ 1.5 A, T_J = 25°C
5.0 mA ≤ I_O ≤ 1.0 A
250 mA ≤ I_O ≤ 750 mA
Quiescent Current
Quiescent Current Change
27.3 Vdc ≤ V_in ≤ 38 Vdc, I_O = 500 mA
27 Vdc ≤ V_in ≤ 38 Vdc, T_J = 25°C
5.0 mA ≤ I_O ≤ 1.0 A
Ripple Rejection
28 Vdc ≤ V_in ≤ 38 Vdc, f = 120 Hz, I_O = 500 mA
Dropout Voltage (I_O = 1.0 A, T_J = 25°C)
Output Noise Voltage (T_A = 25°C)
10 Hz ≤ f ≤ 100 kHz
V_O
23.5
24
24.5
Vdc
V_O
Vdc
23.2
24
25.8
Reg_line
mV
−
11.5
25
−
3.8
28
−
3.8
12
−
10
25
Reg_load
mV
−
2.1
15
−
2.0
25
−
1.8
15
I_B
−
3.6
6.0
mA
DI_B
mA
−
−
0.8
−
−
0.8
−
−
0.5
RR
dB
45
54
−
V_I − V_O
−
2.0
−
Vdc
V_n
mV/V_O
−
10
−
Output Resistance (f = 1.0 kHz)
r_O
−
1.4
−
mW
Short Circuit Current Limit (T_A = 25°C)
V_in = 35 Vdc
I_SC
A
−
0.2
−
Peak Output Current (T_J = 25°C)
I_max
−
2.2
−
A
Average Temperature Coefficient of Output Voltage
TCV_O
−
−2.0
−
mV/°C
31. T_low = 0°C for MC78XXC, MC78XXAC,
= *40°C for NCV78XX, MC78XXB, MC78XXAB, and MC78XXAEB
32. Load and line regulation are specified at constant junction temperature. Changes in V_O due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
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