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Electrical Characteristics

LP2950

,, LP2951

ADJUSTABLE MICROPOWER VOLTAGE REGULATORS

WITH SHUTDOWN

SLVS582D – APRIL 2006 – REVISED MARCH 2007

V

8-pin version: FEEDBACK tied to V

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

3-V VERSION (LP295x-30)

25

°C

2.970

3

3.030

Output voltage

V

–40

°C to 125°C

2.940

3

3.060

3.3-V VERSION (LP295x-33)

25

°C

3.267

3.3

3.333

Output voltage

V

–40

°C to 125°C

3.234

3.3

3.366

5-V VERSION (LP295x-50)

25

°C

4.950

5

5.050

Output voltage

V

–40

°C to 125°C

4.900

5

5.100

ALL VOLTAGE OPTIONS

Output voltage temperature

–40

°C to 125°C

20

100

ppm/

°C

25

°C

0.03

0.2

%/V

–40

°C to 125°C

0.4

25

°C

0.04

0.2

%

–40

°C to 125°C

0.3

25

°C

50

80

–40

°C to 125°C

150

mV

25

°C

380

450

–40

°C to 125°C

600

25

°C

75

120

µA

–40

°C to 125°C

140

GND current

25

°C

8

12

mA

–40

°C to 125°C

14

25

°C

110

170

Dropout ground current

µA

–40

°C to 125°C

200

25

°C

160

200

Current limit

mA

–40

°C to 125°C

220

25

°C

0.05

0.2

%/W

430

160

Output noise (RMS),

25

°C

µV

10 Hz to 100 kHz

100

and 7

(LP2951-xx) 8-PIN VERSION ONLY ADJ

25

°C

1.218

1.235

1.252

–40

°C to 125°C

1.212

1.257

Reference voltage

V

–40

°C to 125°C

1.200

1.272

Reference voltage

25

°C

20

ppm/

°C

(1)

Output or reference voltage temperature coefficient is defined as the worst-case voltage change divided by the total temperature range.

(2)

Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to

heating effects are covered under the specification for thermal regulation.

(3)

Dropout voltage is defined as the input-to-output differential at which the output voltage drops 100 mV, below the value measured at 1-V

differential. The minimum input supply voltage of 2 V (2.3 V over temperature) must be observed.

(4)

Thermal regulation is defined as the change in output voltage at a time (T) after a change in power dissipation is applied, excluding load

5

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