LM2940

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

3 of 12

www.unisonic.com.tw

QW-R102-016.M



ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

RATINGS

UNIT

Input Voltage

26

V

Power Dissipation

Internally limited

Junction Temperature

+150

C

Ambient Operating

Temperature

TO-220/TO-220F

TO-263-3/TO-263

-40 ~ +125

C

SOT-223/ TO-252

-40 ~ +85

Storage Temperature

-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

SYMBOL

RATING

UNIT

Junction to Ambient

SOT-223

174

C/W

TO-220/TO-220F

60

TO-263/TO-263-3

80

TO-252

125

Junction to Case

TO-220/TO-263

TO-263-3

4

C/W

TO-220F

6

TO-252

12

SOT-223

15



ELECTRICAL CHARACTERISTICS

For LM2940-5.0V

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Output Voltage

4.85

5.00

5.15

V

Line Regulation

△

20

50

mV

Load Regulation

△

35

50

mV

Output Impedance

35

mΩ

Quiescent Current

10

15

mA

Output Noise Voltage

150

Ripple Rejection

RR

54

72

dB

Long Term Stability

20

mV/1000Hr

Dropout Voltage

0.5

0.8

V

0.13

0.15

Short Circuit Current

(Note)

2.5

A

Maximum Line Transient

60

75

V

Reverse Polarity DC Input Voltage

-15

-30

V

Reverse Polarity Transient

Input Voltage

-50

-75

V