LP2950 / LP2951

CORPORATION

CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025

TYPICAL APPLICATIONS

1F-44

*SEE APPLICATION INFO.

OUTPUT

VOLTAGE

INPUT

VOLTAGE

4.75V

ERROR*

1.3V

5.0V

+V

IN

LP2951

FB

4

1F-45

SD

GND

7

ERROR

8

1

3

R

2

ERROR

OUTPUT

SHUTDOWN

INPUT

3.3

µF

+

+V

IN

1.2 TO 30V

1.23V

.01

µF

100K

5

V

REF

+V

IN

LP2951

FB

4

1F-46

SD

GND

7

ERROR

8

1

+V

IN

1

µF

+

3

470K

Ω

470K

Ω

R

2

LATCH OFF WHEN ERROR FLAG OCCURS

5

*V

+V

IN

LP2951

FB

4

1F-47

SD

GND

7

ERROR

OUTPUT

SHUTDOWN

INPUT

ERROR

8

1

*MINIMUM INPUT - OUTPUT VOLTAGE RANGES FROM 4mV TO 400mV.

DEPENDING ON LOAD CURRENT. CURRENT LIMIT IS TYPICALLY 160mA.

WIDE INPUT VOLTAGE RANGE CURRENT LIMITER

5

3

FIGURE 1. ERROR OUTPUT TIMING

FIGURE 2. ADJUSTABLE REGULATOR