Rev. 8/10/01

LP2950/51 100mA Low Dropout Voltage Regulators

©Copyright 2001 Sipex Corporation

9

LP2950/LP2951

TYPICAL APPLICATIONS

100K

OUTPUT

ERROR

ERROR

______

SD

GND

FB

1.23V

1.2 to 30V

.01

µF

3.3

µF

V

REF

3

8

5

1

4

7

SHUTDOWN

INPUT

+

LP2951

470k

Ω

ERROR

______

SD

GND

+V

IN

+V

IN

R

1

1

µF

R

2

3

8

5

1

4

+

FB

7

470k

Ω

LP2951

RESET

OUTPUT

ERROR

ERROR

______

SD

V

OUT

GND

FB

*V

3

8

5

1

4

7

SHUTDOWN

INPUT

LP2951

*MINIMUM INPUT-OUTPUT VOLTAGE RANGES FROM 40mV to 400mV.

DEPENDING ON LOAD CURRENT. CURRENT LIMIT IS TYPICALLY 150mA

Figure 2. Adjustable Regulator

Figure 3. Latch Off When Error Flag Occurs

Figure 4. Wide Input voltage Range Current Limiter