MC78XXCT Datasheet, PDF (6/9 Pages) Vishay Siliconix – 3-Terminal Fixed Positive Voltage Regulators

MC78xxCT Series
Vishay Semiconductor
Electrical Characteristics – MC7818
Vin = 27V, Iout = 500mA, 0°C ≤ TJ ≤ 125°C, Cin = 0.33µF, Cout = 0.1µF; unless otherwise noted.
Parameter
Symbol
Conditions
Min. Typ. Max. Unit
Output Voltage
TJ = 25°C
17.64 18.0 18.36
Vout
21V ≤ Vin ≤ 33V,
5mA ≤ Iout ≤ 1.0A, PD ≤ 15W
17.44
—
18.56
V
Line Regulation
(TJ = 25°C)
∆REGline
21V ≤ Vin < 33V
22V ≤ Vin < 26V
–
15
360
mV
–
5
180
Load Regulation
(TJ = 25°C)
10mA ≤ Iout < 1.5A
–
∆REGload
250mA ≤ Iout < 750mA
–
12
360
mV
4
180
Quiescent Current
Iq
Iout = 0, TJ = 25°C
—
4.5
8
mA
Quiescent Current Change
21V ≤ Vin ≤ 33V
—
—
1
∆Iq
mA
5mA ≤ Iout ≤ 1.0A
—
—
0.5
Output Noise Voltage
Vn
10Hz ≤ f ≤ 100KHz,TJ= 25°C —
110
—
mV
Ripple Rejection Ratio
RR
f = 120Hz,21V ≤ Vin ≤ 31V 53
69
—
dB
Dropout Voltage
Vdrop
Iout = 1.0A, TJ = 25°C
—
2
—
V
Output Resistance
Rout
f = 1KHz
—
22
—
mΩ
Output Short Circuit Current
Ios
TJ = 25°C
—
200
—
mA
Peak Output Current
Io peak
TJ = 25°C
—
1.5
—
A
Temperature Coefficient of Output Voltage
∆Vout/∆TJ Iout = 5mA,0°C ≤TJ ≤ 125°C —
–1
— mV/°C
Electrical Characteristics – MC7824
Vin = 33V, Iout = 500mA, 0°C ≤ TJ ≤ 125°C, Cin = 0.33µF, Cout = 0.1µF; unless otherwise noted.
Parameter
Symbol
Conditions
Min.
Output Voltage
TJ = 25°C
23.52
Vout
26V ≤ Vin ≤ 38V,
5mA ≤ Iout ≤ 1.0A, PD ≤ 15W
23.32
Line Regulation
(TJ = 25°C)
26V ≤ Vin < 38V
–
∆REGline
27V ≤ Vin < 32V
–
Load Regulation
(TJ = 25°C)
10mA ≤ Iout < 1.5A
–
∆REGload
250mA ≤ Iout < 750mA
–
Quiescent Current
Iq
Iout = 0, TJ = 25°C
—
Quiescent Current Change
26V ≤ Vin ≤ 38V
—
∆Iq
5mA ≤ Iout ≤ 1.0A
—
Output Noise Voltage
Vn
10Hz ≤ f ≤ 100KHz,TJ= 25°C —
Ripple Rejection Ratio
Rrej
f = 120Hz, 26V ≤ Vin ≤ 36V 50
Dropout Voltage
Vdrop
Iout = 1.0A, TJ = 25°C
—
Output Resistance
Rout
f = 1KHz
—
Output Short Circuit Current
Ios
TJ = 25°C
—
Peak Output Current
Io peak
TJ = 25°C
—
Temperature Coefficient of Output Voltage
∆Vout/∆TJ Iout = 5mA,0°C ≤TJ ≤ 125°C —
Typ.
24.0
—
18
6
12
4
4.6
—
—
170
66
2
28
150
1.5
–1.5
Max. Unit
24.48
V
24.68
480
mV
240
480
mV
240
8
mA
1
mA
0.5
—
µV
—
dB
—
V
—
mΩ
—
mA
—
A
— mV/°C
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6
Document Number 74813
29-Nov-01