LM2941CS datasheet(2/10 Pages) NSC

2 / 10 page

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Input Voltage (Survival Voltage,

≤ 100 ms)

LM2941T, LM2941S

60V

LM2941CT, LM2941CS

45V

Internal Power Dissipation (Note 3)

Internally Limited

Maximum Junction Temperature

150˚C

Storage Temperature Range

−65˚C

≤ T

J ≤ +150˚C

Lead Temperature

(Soldering, 10 seconds)

TO-220 (T) Package

260˚C

TO-263 (S) Package

260˚C

ESD susceptibility to be determined.

Operating Ratings

Maximum Input Voltage

26V

Temperature Range

LM2941T

−40˚C

≤ T

J ≤ 125˚C

LM2941CT

0˚C

≤ T

J ≤ 125˚C

LM2941S

−40˚C

≤ T

J ≤ 125˚C

LM2941CS

0˚C

≤ T

J ≤ 125˚C

LM2941J

−55˚C

≤ T

J ≤ 125˚C

LM2941WG

−55˚C

≤ T

J ≤ 125˚C

Electrical Characteristics — LM2941T, LM2941S, LM2941J, LM2941WG

≤ V

O ≤ 20V, VIN = VO + 5V, CO = 22 µF, unless otherwise specified. Specifications in standard typeface apply for TJ =

25˚C, while those in boldface type apply over the full Operating Temperature Range.

Parameter

Conditions

Typ

LM2941J

LM2941WG

Limit

(Note 2) (Note 4)

LM2941T

LM2941S

Limit

(Note 5)

Units

(Limits)

Reference Voltage

5 mA

≤ I

O ≤ 1A (Note 6)

1.275

1.237/1.211

V(min)

1.313/1.339

V(max)

Line Regulation

O +2V ≤ VIN ≤ 26V, IO = 5 mA

10/10

mV/V(max)

Load Regulation

50 mA

≤ I

O ≤ 1A

10/10

mV/V(max)

Output Impedance

100 mADC and 20 mArms

Ω/V

O = 120 Hz

Quiescent Current

O +2V ≤ VIN < 26V, IO = 5 mA

15/20

mA(max)

IN = VO + 5V, IO = 1A

45/60

mA(max)

RMS Output Noise,

10 Hz–100 kHz

0.003

% of V

OUT

O = 5mA

Ripple Rejection

O = 120 Hz, 1 Vrms, IL = 100 mA

0.005

0.02/0.04

%/V(max)

Long Term Stability

0.4

%/1000 Hr

Dropout Voltage

O = 1A

0.5

0.8/1.0

V(max)

O = 100 mA

110

200/200

mV(max)

Short Circuit Current

IN max = 26V (Note 7)

1.9

1.6/1.3

1.6

A(min)

Maximum Line

O max 1V above nominal VO

60/60

V(min)

Transient

O = 100Ω,T ≤ 100 ms

Maximum Operational

Input Voltage

26/26

Reverse Polarity DC

Input Voltage

O = 100Ω,VO ≥ −0.6V

−30

−15/−15

V(min)

Reverse Polarity

Transient Input

Voltage

≤ 100 ms, R

O = 100Ω

−75

−50/−50

V(min)

ON/OFF Threshold

Voltage ON

O ≤ 1A

1.30

0.80/0.80

V(max)

ON/OFF Threshold

Voltage OFF

O ≤ 1A

1.30

2.00/2.00

V(min)

ON/OFF Threshold

Current

ON/OFF = 2.0V, IO ≤ 1A

100/300

µA(max)

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