MC7824ACT datasheet(18/34 Pages) ONSEMI

18 / 34 page

MC7800, MC7800A, MC7800AE, NCV7800

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ELECTRICAL CHARACTERISTICS (Vin = 33 V, IO = 1.0 A, TJ = Tlow to 125°C (Note 31), unless otherwise noted)

MC7824AC

Characteristic

Symbol

Min

Typ

Max

Unit

Output Voltage (TJ = 25°C)

23.5

24.5

Vdc

Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W)

23.2

25.8

Vdc

27.3 Vdc ≤ Vin ≤ 38 Vdc

Line Regulation (Note 32)

Regline

27 Vdc ≤ Vin ≤ 38 Vdc, IO = 500 mA

−

11.5

30 Vdc ≤ Vin ≤ 36 Vdc, IO = 1.0 A

−

3.8

30 Vdc ≤ Vin ≤ 36 Vdc, TJ = 25°C

−

3.8

26.7 Vdc ≤ Vin ≤ 38 Vdc, IO = 1.0 A, TJ = 25°C

−

Load Regulation (Note 32)

Regload

5.0 mA ≤ IO ≤ 1.5 A, TJ = 25°C

−

2.1

5.0 mA ≤ IO ≤ 1.0 A

−

2.0

250 mA ≤ IO ≤ 750 mA

−

1.8

Quiescent Current

−

3.6

6.0

Quiescent Current Change

DIB

27.3 Vdc ≤ Vin ≤ 38 Vdc, IO = 500 mA

−

0.8

27 Vdc ≤ Vin ≤ 38 Vdc, TJ = 25°C

−

0.8

5.0 mA ≤ IO ≤ 1.0 A

−

0.5

Ripple Rejection

−

28 Vdc ≤ Vin ≤ 38 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)

−

mV/VO

10 Hz ≤ f ≤ 100 kHz

Output Resistance (f = 1.0 kHz)

−

1.4

−

Short Circuit Current Limit (TA = 25°C)

ISC

−

0.2

−

Vin = 35 Vdc

Peak Output Current (TJ = 25°C)

Imax

−

2.2

−

Average Temperature Coefficient of Output Voltage

TCVO

−

−2.0

−

mV/°C

31.Tlow =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 VO due to heating effects must be taken into account

separately. Pulse testing with low duty cycle is used.

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