MC7824ACT datasheet(16/34 Pages) ONSEMI

16 / 34 page

MC7800, MC7800A, MC7800AE, NCV7800

http://onsemi.com

ELECTRICAL CHARACTERISTICS (Vin = 27 V, IO = 1.0 A, TJ = Tlow to 125°C (Note 27), unless otherwise noted)

Characteristic

Symbol

MC7818AC

Unit

Min

Typ

Max

Output Voltage (TJ = 25°C)

17.64

18.36

Vdc

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

17.3

18.7

Vdc

21 Vdc ≤ Vin ≤ 33 Vdc

Line Regulation (Note 28)

Regline

21 Vdc ≤ Vin ≤ 33 Vdc, IO = 500 mA

−

9.5

24 Vdc ≤ Vin ≤ 30 Vdc, IO = 1.0 A

−

3.2

24 Vdc ≤ Vin ≤ 30 Vdc, IO = 1.0 A, TJ = 25°C

−

3.2

10.5

20.6 Vdc ≤ Vin ≤ 33 Vdc, IO = 1.0 A, TJ = 25°C

−

8.0

Load Regulation (Note 28)

Regload

5.0 mA ≤ IO ≤ 1.5 A, TJ = 25°C

−

2.0

5.0 mA ≤ IO ≤ 1.0 A

−

1.8

250 mA ≤ IO ≤ 750 mA

−

1.5

Quiescent Current

−

3.5

6.0

Quiescent Current Change

DIB

21 Vdc ≤ Vin ≤ 33 Vdc, IO = 500 mA

−

0.8

21.5 Vdc ≤ Vin ≤ 30 Vdc, TJ = 25°C

−

0.8

5.0 mA ≤ IO ≤ 1.0 A

−

0.5

Ripple Rejection

−

22 Vdc ≤ Vin ≤ 32 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

−

1.3

−

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

−

−1.5

−

mV/°C

27.Tlow =0°C for MC78XXC, MC78XXAC,

= *40°C for NCV78XX, MC78XXB, MC78XXAB, and MC78XXAEB

28.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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