LM2940

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

3 of 11

www.unisonic.com.tw

QW-R102-016.E

ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

RATINGS

UNIT

Input Voltage

26

V

Power Dissipation

Internally limited

Junction Temperature

+150

°C

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

-40 ~ +125

°C

Operating Temperature

SOT-223

-40 ~ +85

°C

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.

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

Ro

100 mA DC and 20mArms, fo=120Hz

35

mΩ

Quiescent Current

10

15

mA

Output Noise Voltage

eN

150

µVrms

Ripple Rejection

RR

60

72

dB

Long Term Stability

20

mV/

1000Hr

0.5

0.8

Dropout Voltage

0.11

0.15

V

Short Circuit Current

(Note)

1.6

1.9

A

Maximum Line Transient

Ro=100Ω, T ≤ 100ms

60

75

V

Reverse Polarity DC Input Voltage

Ro=100Ω

-15

-30

V

Reverse Polarity Transient Input

Voltage

Ro=100Ω, T ≤ 100ms

-50

-75

V

For LM2940-8.0V

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Output Voltage

7.76

8.00

8.24

V

Line regulation

△

20

80

mV

Load Regulation

△

55

80

mV

Output Impedance

Ro

100 mA DC and 20mArms, fo=120Hz

55

mΩ

Quiescent Current

10

15

mA

Output Noise Voltage

eN

240

µVrms

Ripple Rejection

RR

54

66

dB

Long Term Stability

32

mV/

1000Hr

0.5

0.8

Dropout Voltage

0.11

0.15

V

Short Circuit Current

(Note)

1.6

1.9

A

Maximum Line Transient

Ro=100Ω, T ≤ 100ms

60

75

V

Reverse Polarity DC Input Voltage

Ro=100Ω

-15

-30

V

Reverse Polarity Transient Input

Voltage

Ro=100Ω, T ≤ 100ms

-50

-75

V