SC1540 查看數據表（PDF） - Semtech Corporation

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SC1540

300mA AND 500mA LOW DROPOUT VOLTAGE REGULATORS WITH ENABLE

Semtech Corporation 

PRELIMINARY - May 1, 2000

TYPICAL APPLICATION

300mA AND 500mA LOW DROPOUT

VOLTAGE REGULATORS WITH ENABLE

SC1540

SC1540A

VIN

ENABLE SIGNAL

U1 SC1540(A)

VIN

VO

EN GND

C1

10uF

Tantalum

VOUT

C2

10uF min.

Tantalum

NOTES

(1) Input and output capacitors should be located close to the device.

(2) Connect all pins to PCB for optimal thermal characteristics.

(3) Increasing the output capacitor value will improve the overall transient response.

(4) The device is enabled when EN = VIN, and shut down when EN is pulled to ground. EN should not be taken

higher than VIN. A CMOS signal referenced to VIN would be ideal for switching the SC1540(A) on and off.

© 2000 SEMTECH CORP.

3

652 MITCHELL ROAD NEWBURY PARK CA 91320

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