MC78MXX_09 datasheet(7/14 Pages) FAIRCHILD

Numer części	MC78MXX

Szczegółowy opis	3-Terminal 0.5A Positive Voltage Regulator

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Producent	FAIRCHILD [Fairchild Semiconductor]

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MC78MXX/LM78MXX

7

Electrical Characteristics (MC78M18) (Continued)

(Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=26V, 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°C

17.3

18

18.7

V

IO = 5mA to 350mA

VI = 20.5V to 33V

17.1

18

18.9

Line Regulation (Note1)

ΔVO

IO = 200mA

TJ = +25°C

VI = 21V to 33V

-

100

mV

VI = 24V to 33V

-

50

Load Regulation (Note1)

ΔVΟ

IO = 5mA to 0.5A, TJ = +25°C

-

360

mV

IO = 5mA to 200mA, TJ = +25°C

-

180

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 = 21V to 33V

--

0.8

Output Voltage Drift

ΔV/ΔTIO = 5mATJ = 0 to 125°C-

-1.1

-

mV/

°C

Output Noise Voltage

VN

f = 10Hz to 100kHz

-

100

-

μV/Vo

Ripple Rejection

RR

f = 120Hz, IO= 300mA , VI = 22V to 32V

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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