MC7809ACT datasheet(18/32 Pages) ONSEMI

Part #	MC7809ACT

Description	THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS

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MC7800, MC7800A, NCV7805

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ELECTRICAL CHARACTERISTICS (Vin = 33 V, IO = 1.0 A, TJ = Tlow to Thigh (Note 30), unless otherwise noted)

MC7824AC

Characteristic

Symbol

Min

Typ

Max

Unit

Output Voltage (TJ = 25°C)

VO

23.5

24

24.5

Vdc

Output Voltage (5.0 mA

≤ IO ≤ 1.0 A, PD ≤ 15 W)

VO

23.2

24

25.8

Vdc

27.3 Vdc

≤ Vin ≤ 38 Vdc

Line Regulation (Note 31)

Regline

mV

27 Vdc

≤ Vin ≤ 38 Vdc, IO = 500 mA

−

11.5

25

30 Vdc

≤ Vin ≤ 36 Vdc, IO = 1.0 A

−

3.8

28

30 Vdc

≤ Vin ≤ 36 Vdc, TJ = 25°C

−

3.8

12

26.7 Vdc

≤ Vin ≤ 38 Vdc, IO = 1.0 A, TJ = 25°C

−

10

25

Load Regulation (Note 31)

Regload

mV

5.0 mA

≤ IO ≤ 1.5 A, TJ = 25°C

−

2.1

15

5.0 mA

≤ IO ≤ 1.0 A

−

2.0

25

250 mA

≤ IO ≤ 750 mA

−

1.8

15

Quiescent Current

IB

−

3.6

6.0

mA

Quiescent Current Change

DIB

mA

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

RR

45

54

−

dB

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)

Vn

−

10

−

mV/VO

10 Hz

≤ f ≤ 100 kHz

Output Resistance (f = 1.0 kHz)

rO

−

1.4

−

m

W

Short Circuit Current Limit (TA = 25°C)

ISC

−

0.2

−

A

Vin = 35 Vdc

Peak Output Current (TJ = 25°C)

Imax

−

2.2

−

A

Average Temperature Coefficient of Output Voltage

TCVO

−

−2.0

−

mV/

°C

30. Tlow =0°C for MC78XXAC, C

Thigh = +125°C for MC78XXAC, C, NCV7805

=

*40°C for MC78XXB, MC78XXAB, NCV7805

31. 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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MC7809ACT Datasheet(PDF) 18 Page - ON Semiconductor

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