MC7808CD2TR4 datasheet(17/32 Pages) ONSEMI

Part #	MC7808CD2TR4

Description	THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS

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MC7800, MC7800A, NCV7805

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ELECTRICAL CHARACTERISTICS (Vin = 33 V, IO = 500 mA, TJ = Tlow to Thigh (Note 28), unless otherwise noted)

MC7824B

MC7824C

Characteristic

Symbol

Min

Typ

Max

Min

Typ

Max

Unit

Output Voltage (TJ = 25°C)

VO

23

24

25

23

24

25

Vdc

Output Voltage (5.0 mA

≤ IO ≤ 1.0 A, PD ≤ 15 W)

VO

Vdc

27 Vdc

≤ Vin ≤ 38 Vdc

−

22.8

24

25.2

28 Vdc

≤ Vin ≤ 38 Vdc

22.8

24

25.2

−

Line Regulation, (Note 29)

Regline

mV

27 Vdc

≤ Vin ≤ 38 Vdc

−

11.5

480

−

2.7

60

30 Vdc

≤ Vin ≤ 36 Vdc

−

3.8

240

−

2.7

48

Load Regulation, (Note 29)

Regload

−

2.1

480

−

4.4

65

mV

5.0 mA

≤ IO ≤ 1.5 A

Quiescent Current

IB

−

3.6

8.0

−

3.6

6.5

mA

Quiescent Current Change

DIB

mA

27 Vdc

≤ Vin ≤ 38 Vdc

−

1.0

5.0 mA

≤ IO ≤ 1.0 A

−

0.5

−

0.5

Ripple Rejection

RR

−

54

−

50

54

−

dB

28 Vdc

≤ Vin ≤ 38 Vdc, f = 120 Hz

Dropout Voltage (IO = 1.0 A, TJ = 25°C)

VI − VO

−

2.0

−

2.0

−

Vdc

Output Noise Voltage (TA = 25°C)

Vn

−

10

−

10

−

mV/VO

10 Hz

≤ f ≤ 100 kHz

Output Resistance f = 1.0 kHz

rO

−

1.4

−

1.4

−

m

W

Short Circuit Current Limit (TA = 25°C)

ISC

−

0.2

−

0.2

−

A

Vin = 35 Vdc

Peak Output Current (TJ = 25°C)

Imax

−

2.2

−

2.2

−

A

Average Temperature Coefficient of Output Voltage

TCVO

−

−2.0

−

−2.0

−

mV/

°C

28. Tlow =0°C for MC78XXAC, C

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

=

*40°C for MC78XXB, MC78XXAB, NCV7805

29. 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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