LM78LXXA 查看數據表（PDF） - Fairchild Semiconductor

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LM78LXXA

3-Terminal 0.1A Positive Voltage Regulator

Fairchild Semiconductor 

MC78LXXA/LM78LXXA/MC78L05AA

Electrical Characteristics(MC78L15A) (Continued)

(VI = 23V, IO = 40mA, 0°C ≤ TJ ≤ 125°C, CI = 0.33 μF, CO = 0.1μF, unless otherwise specified. (Note1))

Parameter

Symbol

Conditions

Min. Typ. Max. Unit

Output Voltage

VO TJ = 25°C

14.4 15 15.6 V

Line Regulation (Note1)

ΔVO TJ = 25°C

17.5V ≤ VI ≤ 30V

20V ≤ VI ≤ 30V

- 25 300 mV

- 20 250 mV

Load Regulation (Note1)

ΔVO TJ = 25°C

1mA ≤ IO ≤ 100mA - 25 150 mV

1mA ≤ IO ≤ 40mA

- 12 75 mV

Output Voltage

17.5V ≤ VI ≤ 30V 1mA ≤ IO ≤ 40mA 14.25 - 15.75 V

VO

17.5V ≤ VI ≤

VMAX (Note2)

1mA ≤ IO ≤ 70mA

14.25 - 15.75 V

Quiescent Current

IQ TJ = 25°C

- 2.1 6.0 mA

Quiescent Current

Change

With Line ΔIQ

With Load ΔIQ

20V ≤ VI ≤ 30V

1mA ≤ IO ≤ 40mA

-

- 1.5 mA

-

- 0.1 mA

Output Noise Voltage

VN TA = 25°C, 10Hz ≤ f ≤ 100kHz

- 90 - μV/Vo

Temperature Coefficient of VO ΔVO/ΔT IO = 5mA

- -1.3 - mV/°C

Ripple Rejection

RR f = 120Hz, 18.5V≤VI ≤28.5V, TJ = 25°C 34 60

-

dB

Dropout Voltage

VD TJ = 25°C

- 1.7 -

V

Note:

1. 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 represent pulse test conditions with junction temperature as indicated at the initiation of tests.

2. Power dissipation PD ≤ 0.75W.

6

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