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LP2950

,, LP2951

ADJUSTABLE MICROPOWER VOLTAGE REGULATORS

WITH SHUTDOWN

SLVS582D – APRIL 2006 – REVISED MARCH 2007

Electrical Characteristics (continued)

V

8-pin version: FEEDBACK tied to V

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

25

°C

20

40

FEEDBACK bias current

nA

–40

°C to 125°C

60

FEEDBACK bias current

25

°C

0.1

nA/

°C

temperature coefficient

ERROR COMPARATOR

25

°C

0.01

1

Output leakage current

µA

–40

°C to 125°C

2

25

°C

150

250

Output low voltage

mV

–40

°C to 125°C

400

25

°C

40

60

Upper threshold voltage

mV

–40

°C to 125°C

25

25

°C

75

95

Lower threshold voltage

mV

–40

°C to 125°C

140

25

°C

15

mV

SHUTDOWN INPUT

Low (regulator ON)

0.7

Input logic voltage

–40

°C to 125°C

V

High (regulator OFF)

2

25

°C

30

50

–40

°C to 125°C

100

SHUTDOWN input current

µA

25

°C

450

600

–40

°C to 125°C

750

25

°C

3

10

Regulator output current

µA

in shutdown

–40

°C to 125°C

20

(5)

Comparator thresholds are expressed in terms of a voltage differential equal to the nominal reference voltage (measured at

go low when the output drops by 95 mV

× 5 V/1.235 V = 384 mV. Thresholds remain constant as a percentage of V

varied), with the low-output warning occurring at 6% below nominal (typ) and 7.7% (max).

(6)

Comparator thresholds are expressed in terms of a voltage differential equal to the nominal reference voltage (measured at

go low when the output drops by 95 mV

× 5 V/1.235 V = 384 mV. Thresholds remain constant as a percentage of V

varied), with the low-output warning occurring at 6% below nominal (typ) and 7.7% (max).

6

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