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L78L18

Three-Terminal Positive-Voltage Regulator

Niko Semiconductor 

NIKO-SEM

Three-Terminal

Positive-Voltage Regulator

L78L18

ELECTRICAL SPECIFICATIONS (L78L18)

(VI = 25V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF, 0 °C < TJ < +125 °C unless otherwise noted.)

PARAMETER

TEST CONDITIONS

MIN TYP MAX UNITS

Output Voltage

Line Regulation

TJ = +25 °C

TJ = +25 °C

21V ≤ VI ≤ 33V

22V ≤ VI ≤ 33V

17.3 18 18.7 V

145 300 mV

135 250

Load Regulation

TJ = +25 °C

1.0 mA ≤ IO ≤ 100 mA

1.0 mA ≤ IO ≤ 40 mA

30 170 mV

15 85

Output Voltage

21V ≤ VI ≤ 33V, 1.0 mA ≤ IO ≤ 40 mA 17.1

21V ≤ VI ≤ VMAX, 1.0 mA ≤ IO ≤ 70 mA 17.1

18.9 V

18.9

Input Bias Current

TJ = +25 °C

2.0 6.0 mA

Input Bias Current Change 21V ≤ VI ≤ 33V

1.0 mA ≤ IO ≤ 40 mA

1.5 mA

0.1

Output Noise Voltage

TA = +25 °C, 10 Hz ≤ f ≤ 100 KHz

150

µV

Ripple Rejection

Dropout Voltage

TJ = +25 °C, f = 120 Hz

23V ≤ VI ≤ 33V

TJ = +25 °C

34 48

dB

1.7

V

3

MAR-04-2002

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