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

„ ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

RATINGS

UNIT

Input Voltage

VIN

26

V

Power Dissipation

Junction Temperature

PD

Internally limited

TJ

+150

°C

Ambient Operating

Temperature

TO-220/TO-263-3/TO-263

SOT-223/ TO-252

TOPR

-40 ~ +125

°C

-40 ~ +85

Storage Temperature

TSTG

-65 ~ +150

°C

Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.

„ THERMAL DATA

PARAMETER

SOT-223

Junction to Ambient

TO-220

TO-263/TO-263-3

TO-252

TO-220/ TO-263/TO-263-3

Junction to Case

TO-252

SOT-223

„ ELECTRICAL CHARACTERISTICS

SYMBOL

θJA

θJC

RATING

174

60

80

125

4

12

15

UNIT

°C/W

°C/W

(TA=TJ =25°C, VIN=VOUT+5V, IOUT=1A and COUT=22μF, unless otherwise specified.)

For LM2940-5.0V

PARAMETER

SYMBOL

TEST CONDITIONS

Output Voltage

Line Regulation

Load Regulation

VOUT

△VOUT

△VOUT

6.25V ≤ VIN ≤ 26V, 5mA ≤ IOUT ≤ 1A

VOUT+2V ≤ VIN ≤ 26V, IOUT=5mA

50mA ≤ IOUT ≤ 1A

Output Impedance

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

Quiescent Current

IQ

VOUT+2V ≤ VIN ≤ 26V, IOUT=5mA

Output Noise Voltage

eN 10Hz-100kHz, IOUT=5mA

Ripple Rejection

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

Long Term Stability

Dropout Voltage

VD

IOUT=1A

IOUT=100mA

Short Circuit Current

ISC (Note)

Maximum Line Transient

TIN ROUT=100Ω, T ≤ 100ms

Reverse Polarity DC Input Voltage VRIN ROUT=100Ω

Reverse Polarity Transient

Input Voltage

VTRRI ROUT=100Ω, T ≤ 100ms

MIN

4.85

54

60

-15

-50

TYP

5.00

20

35

35

10

150

72

20

0.5

0.13

2.5

75

-30

-75

MAX UNIT

5.15

V

50

mV

50

mV

mΩ

15

mA

μVRMS

dB

mV/1000Hr

0.8

V

0.15

A

V

V

V

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

3 of 12

QW-R102-016.L

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