LM2940 查看數據表（PDF） - Unisonic Technologies

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LM2940

1A LOW-DROPOUT POSITIVE VOLTAGE REGULATOR

Unisonic Technologies 

LM2940

LINEAR INTEGRATED CIRCUIT

„ ELECTRICAL CHARACTERISTICS(Cont.)

UTC LM2940-15V

PARAMETER

SYMBOL

TEST CONDITIONS

MIN TYP MAX UNIT

Output Voltage

Line regulation

Load Regulation

VOUT 16.75V ≤ VIN ≤ 26V, 5mA ≤ IOUT ≤ 1A 14.55 15.00 15.45 V

△VOUT VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA

20 150 mV

△VOUT 50mA ≤ IOUT ≤ 1A

70 150 mV

Output Impedance

ROUT 100mA DC and 20mARMS, fO=120Hz

100

mΩ

Quiescent Current

IQ

VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA

10 15

mA

Output Noise Voltage

eN 10Hz-100kHz, IOUT =5mA

450

μVRMS

Ripple Rejection

RR fO=120Hz, 1VRMS, IOUT =100mA

52 64

dB

Long Term Stability

60

mV/1000Hr

Dropout Voltage

VD

IOUT =1A

IOUT =100mA

0.5 0.8

V

0.11 0.15

Short Circuit Current

ISC (Note)

2.5

A

Maximum Line Transient

TIN ROUT=100Ω, T ≤ 100ms

60 75

V

Reverse Polarity DC Input Voltage VRIN ROUT=100Ω

-15 -30

V

Reverse Polarity Transient Input

Voltage

VTRRI ROUT=100Ω, T ≤ 100ms

-50 -75

V

Note: Output current will decrease with temperature increase but will not drop below 1A at the maximum specified

temperature.

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

6 of 12

QW-R102-016.L

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