LP2950AS Просмотр технического описания (PDF) - Signal Processing Technologies

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LP2950AS

100 mA Low Dropout Voltage Regulators

Signal Processing Technologies 

TYPICAL APPLICATIONS

LP2950/LP2951

+VIN

100K

ERROR

OUTPUT

5 ______

ERROR

8

+VIN

1

VOUT

LP2951

SHUTDOWN

INPUT

3

SD

GND

4

FB

7

1.23V

VREF

1.2 to 30V

+

R1

3.3uF

.01uF

R2

Figure 1. Adjustable Regulator

+VIN

470KΩ ..

8

5 ______

+VIN

ERROR

470KΩ ..

1

VOUT

LP2951

3

SD

R1

GND

FB

4

7

VOUT

+

1uF

R2

Fig.2 Latch Off When Error Flag Occurs

+VIN

ERROR

OUTPUT

SHUTDOWN

INPUT

5 ______

ERROR

8

+VIN

1

VOUT

LP2951

3

SD

GND

FB

4

7

*VOUT= VIN

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

DEPENDING ON LOAD CURRENT. CURRENT LIMIT IS TYPICALLY 160mA

Fig.3 Wide Input Voltage Range Current Limiter

Rev. 11/2/00

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