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 Supply Voltage

−0.3 to +30V

SHUTDOWN Input Voltage,

Error Comparator Output

Voltage, (Note 9)

−0.3 to +30V

FEEDBACK Input Voltage

−1.5 to +30V

(Note 9) (Note 10)

Power Dissipation

Internally Limited

Junction Temperature (T

+150˚C

Ambient Storage Temperature

−65˚ to +150˚C

Soldering Dwell Time, Temperature

Wave

Infrared

Vapor Phase

4 seconds, 260˚C

10 seconds, 240˚C

75 seconds, 219˚C

ESD

TBD

Operating Ratings (Note 1)

Maximum Input Supply Voltage

30V

Junction Temperature Range

(Note 8)

LP4950C, LP4951C

−40˚C to 125˚C

Electrical Characteristics (Note 2)

Parameter

Conditions

(Note 2)

LP4950CZ

Units

LP4951CM

Tested

Design

Typ

Limit

Limit

(Note 3)

(Note 4)

Output Voltage

T

5.0

5.1

V max

4.9

V min

−25˚C

≤ T

J

≤ 85˚C

5.15

V max

4.85

V min

Full Operating

5.2

V max

Temperature Range

4.8

V min

Output Voltage

100 µA

≤ I

L

≤ 100 mA

5.24

V max

T

J

≤ T

JMAX

4.76

V min

Output Voltage

Temperature Coefficient

(Note 12)

150

ppm/˚C

Line Regulation

(Note 14)

6V

≤ V

IN

≤ 30V (Note 15)

0.04

0.2

% max

0.4

% max

Load Regulation

(Note 14)

100µA

≤ I

L

≤ 100mA

0.1

0.2

% max

0.3

% max

Dropout Voltage

(Note 5)

I

50

80

mV max

150

mV max

I

380

450

mV max

600

mV max

Ground Current

I

75

150

µA max

170

µA max

I

8

15

mA max

19

mA max

Dropout Ground Current

V

110

200

µA max

I

230

µA max

Current Limit

V

160

200

mA max

220

mA max

Thermal Regulation

(Note 13)

0.05

0.2

%/W max

Output Noise,

C

430

µV rms

10 Hz to 100 kHz

C

160

µV rms

C

Pins 7 to 1 (LP4951C)

100

µV rms

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