Dual 150mA ULTRA LOW DROPOUT,

LOW NOISE REGULATOR

© 2000 SEMTECH CORP.

652 MITCHELL ROAD NEWBURY PARK CA 91320

SC1456

PRELIMINARY - June 15, 2000

4

BLOCK DIAGRAM

PIN CONFIGURATION

Top View

MSOP-10

PIN DESCRIPTIONS

Pin #

Pin Name Description

1

EN1

Active high enable pin for device 1. Connect to VIN1 if not being used.

2

GND

Ground pin. Can be used for heatsinking if needed. Electrically connected to pin 7.

3

SET1

Connecting this pin to ground results in the internally preset value for V

external resistor divider changes V

4

OUT2

Regulator output for device 2, sourcing up to 150mA

5

IN2

Supply input pin for device 2.

6

EN2

Active high enable pin for device 2. Connect to VIN2 if not being used.

7

GND

Ground pin. Can be used for heatsinking if needed. Electrically connected to pin 2.

8

SET2

Connecting this pin to ground results in the internally preset value for V

external resistor divider changes V

9

OUT1

Regulator output for device 1, sourcing up to 150mA

10

IN1

Supply input pin for device 1.











 +

•

=

2

R

1

R

1

250

.

1

V

1

OUT











 +

•

=

2

R

1

R

1

250

.

1

V

2

OUT

VOLTAGE OPTIONS

Replace X in the part number (SC1456XIMS) by the letter shown

below for the corresponding voltage option:

XV

V

A2.5

2.5

B2.8

2.8

C3.0

3.0

D3.3

3.3