© 2000 SEMTECH CORP.

652 MITCHELL ROAD NEWBURY PARK CA 91320

VERY LOW DROPOUT, LOW

QUIESCENT 500mA REGULATOR

SC1563

PRELIMINARY - September 11, 2000

4

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):

GND

2

5-8

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

heatsinking purposes.

VIN

5

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.

VO

4

4

This pin is the power output of this device.

SHDN

1

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.

Volts

R2

R2)

(R1

1.200

VO

+

=

BLOCK DIAGRAM

PIN CONFIGURATIONS

Top View

SOT-23-5L

Top View

MSOP-8