LR78M18 datasheet(7/11 Pages) LRC

7 / 11 page

Electrical Characteristics (LR78M18) (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

TJ = +25

°C

17.3

18.7

IO = 5mA to 350mA

VI = 20.5V to 33V

17.1

18.9

Line Regulation (Note1)

∆VO

IO = 200mA

TJ = +25

°C

VI = 21V to 33V

100

VI = 24V to 33V

Load Regulation (Note1)

∆VΟ

IO = 5mA to 0.5A, TJ = +25

°C

360

IO = 5mA to 200mA, TJ = +25

°C

180

Quiescent Current

TJ = +25

°C-

4.2

6.0

Quiescent Current Change

∆IQ

IO = 5mA to 350mA

0.5

IO = 200mA

VI = 21V to 33V

0.8

Output Voltage Drift

∆V/∆TIO = 5mATJ = 0 to 125°C-

-1.1

mV/

°C

Output Noise Voltage

f = 10Hz to 100kHz

100

µV/Vo

Ripple Rejection

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

TJ =+25

°C

-70

Dropout Voltage

TJ = +25

°C, IO = 500mA

Short Circuit Current

ISC

TJ = +25°C, VI = 35V

300

Peak Current

IPK

TJ = +25

°C

700

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