If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Storage Temperature Range

−65˚C to +150˚C

Operating Junction

Temperature Range

−40˚C to +125˚C

Lead Temperature

(Soldering, 5 seconds)

260˚C

Power Dissipation (Note 2)

Internally Limited

Input Supply Voltage

−20V to +30V

Feedback Input Voltage (Note 3)

−0.3V to +5V

Aux. Feedback Input Voltage (Note 3)

−0.3V to +5V

Shutdown Input Voltage (Note 3)

−0.3V to +30V

Comparator Input Voltage (Notes 3,

4)

−0.3V to +30V

Comparator Output Voltage (Notes 3,

4)

−0.3V to +30V

ESD Rating (Note 16)

2 kV

Electrical Characteristics

Limits in standard typeface are for T

its are guaranteed by production testing or correlation techniques using standard Statistical Quality Control (SQC) methods.

Unless otherwise specified: V

pin, C

regulator output hasa1mA load, the auxiliary regulator output has a 100 µA load.

Symbol

Parameter

Conditions

Typical

LP2956AI

LP2956I

Units

Min

Max

Min

Max

MAIN OUTPUT

V

O

Output Voltage

5.0

4.975

5.025

4.950

5.050

4.940

5.060

4.900

5.100

V

1mA

≤ I

5.0

4.930

5.070

4.880

5.120

Temperature Coefficient

(Note 5)

20

100

150

ppm/˚C

Line Regulation

V

0.03

0.1

0.2

%

0.2

0.4

Load Regulation

I

0.04

0.16

0.20

%

I

0.20

0.30

V

Dropout Voltage

I

60

100

100

(Note 7)

150

150

I

240

300

300

420

420

mV

I

310

400

400

520

520

I

470

600

600

800

800

I

LIMIT

Current Limit

R

380

500

500

mA

530

530

Thermal Regulation

(Note 8)

0.05

0.2

0.2

%/W

e

n

Output Noise Voltage

C

400

(10 Hz to 100 KHz)

C

260

µV RMS

I

C

80

V

FB

Feedback Pin Voltage

1.23

1.215

1.245

1.205

1.255

V

I

FB

Feedback Pin Bias

20

40

40

nA

Current

60

60

I

O

Output Leakage

I

3

10

10

µA

(OFF)

In Shutdown

V

20

20

AUXILIARY OUTPUT

V

FB

Feedback Pin Voltage

1.23

1.22

1.25

1.21

1.26

V

1.21

1.26

1.20

1.27

www.national.com

3