MC78M08CDT datasheet(8/14 Pages) FAIRCHILD

Part #	MC78M08CDT

Description	3-Terminal 0.5A Positive Voltage Regulator

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

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8 / 14 page

MC78MXX/LM78MXX

8

Electrical Characteristics (MC78M24) (Continued)

(Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=33V, unless otherwise specified, CI =0.33μF, CO=0.1μF)

Note:

1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken

into account separately. Pulse testing with low duty is used.

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

Output Voltage

VO

TJ =+25°C23

24

25

V

IO = 5mA to 350mA

VI = 27V to 38V

22.8

24

25.2

Line Regulation (Note1)

ΔVO

IO = 200mA

TJ =+25°C

VI = 27V to 38V

-

100

mV

VI = 28V to 38V

-

50

Load Regulation (Note1)

ΔVO

IO = 5mA to 0.5A, TJ =+25°C

-

480

mV

IO = 5mA to 200mA, TJ =+25°C

-

240

Quiescent Current

IQ

TJ = +25°C-

4.2

6.0

mA

Quiescent Current Change

ΔIQ

IO = 5mA to 350mA

-

0.5

mA

IO = 200mA

VI = 27V to 38V

--

0.8

Output Voltage Drift

ΔV/ΔT

IO = 5mA

TJ = 0 to +125°C

--1.2

-

mV/

°C

Output Noise Voltage

VN

f = 10Hz to 100kHz

-

170

-

μV/Vo

Ripple Rejection

RR

f = 120Hz, IO = 300mA

VI = 28V to 38V, TJ =+25 °C

-70

-

dB

Dropout Voltage

VD

TJ = +25°C, IO = 500mA

-

2

-

V

Short Circuit Current

ISC

TJ = +25°C, VI = 35V

-

300

-

mA

Peak Current

IPK

TJ = +25°C

-

700

-

mA

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