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78L05

3-Terminal 0.1 A Positive Voltage Regulator

Fairchild Semiconductor 

Electrical Characteristics (MC78L12A / LM78L12A)

VI = 19 V, IO = 40 mA, 0°C ≤ TJ ≤ 125°C, CI = 0.33 μF, CO = 0.1 μF, unless otherwise specified.

Symbol

Parameter

Conditions

Min. Typ. Max. Unit

VO

Output Voltage

TJ = 25°C

11.5 12.0 12.5 V

ΔVO Line Regulation (7)

TJ = 25°C

14.5 V ≤ VI ≤ 27 V

16 V ≤ VI ≤ 27 V

20 250 mV

15 200 mV

ΔVO Load Regulation (7)

TJ = 25°C

1 mA ≤ IO ≤ 100 mA

1 mA ≤ IO ≤ 40 mA

20 100 mV

10 50 mV

VO

Output Voltage

14.5 V ≤ VI ≤ 27 V

1 mA ≤ IO ≤ 40 mA 11.4

14.5 V ≤ VI ≤ VMAX(8) 1 mA ≤ IO ≤ 70 mA 11.4

12.6 V

12.6 V

IQ

Quiescent Current

TJ = 25°C

2.1 6.0 mA

ΔIQ Quiescent

With Line 16 V ≤ VI ≤ 27 V

ΔIQ

Current Change With Load 1 mA ≤ IO ≤ 40 mA

1.5 mA

0.1 mA

VN

Output Noise Voltage

TA = 25°C, 10 Hz ≤ f ≤ 100 kHz

80

μV/Vo

ΔVO/ΔT Temperature Coefficient of VO IO = 5 mA

-1.0

mV/°C

RR Ripple Rejection

f = 120 Hz, 15 V ≤ VI ≤ 25 V, TJ = 25°C

37 65

dB

VD

Dropout Voltage

TJ = 25°C

1.7

V

Notes:

7. The maximum steady-state usable output current and input voltage are very dependent on the heat sinking and/or

lead length of the package. The data above represents pulse test conditions with junction temperature as indicated

at the initiation of tests.

8. Power dissipation PD ≤ 0.75 W.

© 2002 Fairchild Semiconductor Corporation

MC78LXXA / LM78LXXA Rev. 1.1.0

6

www.fairchildsemi.com

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