SC1563IMS-1.8 データシートの表示（PDF） - Semtech Corporation

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SC1563IMS-1.8

HIGH-EFFICIENCY STEP-DOWN DC-DC CONVERTER

Semtech Corporation 

PRELIMINARY - September 11, 2000

BLOCK DIAGRAM

VERY LOW DROPOUT, LOW

QUIESCENT 500mA REGULATOR

SC1563

PIN CONFIGURATIONS

Top View

Top View

SOT-23-5L

MSOP-8

PIN DESCRIPTION

Pin

Pin Number

Pin Function

Name SOT-23-5L MSOP-8

ADJ

3

3 This pin, when grounded, sets the output voltage to that set by the internal feed-

back resistors. If external feedback resistors are used, the output voltage will be

(See Application Circuit):

VO = 1.200(R1+ R2) Volts

R2

GND

2

VIN

5

VO

4

SHDN

1

5-8 Reference ground. Connect all MSOP-8 GND pins. These pins may be used for

heatsinking purposes.

1 Input voltage. For regulation at full load, the input to this pin must be between (VO

+ 0.7V) to 5.5V. Minimum VIN = 2.2V.

4 This pin is the power output of this device.

2 Shutdown Input. Leaving this pin open turns the regulator off, reducing the quies-

cent current to a fraction of its operating value (typically <100nA). The device will

be enabled if this pin is pulled below 0.4V. Connect to GND if not being used.

4

© 2000 SEMTECH CORP.

652 MITCHELL ROAD NEWBURY PARK CA 91320

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