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SC1452

Dual 150mA LDO Regulator with Programmable Reset

Semtech Corporation 

SC1452

POWER MANAGEMENT

Pin Configuration

(Top View)

Voltage Options

Replace X in the part number (SC1452XIMS) by the

letter shown below for the corresponding voltage

option:

X

VOUTA (V)

VOUTB (V)

A

1.8

1.8

B

2.5

2.5

C

MSOP-10

D

Ordering Information

E

Part Numbers

Package

F

SC1452XIMSTR (1)(2)

MSOP-10

G

SC1452XIMSTRT (1)(2)(3)

H

Notes:

(1) Where X denotes voltage options - see Voltage

J

Options table.

K

(2) Only available in tape and reel packaging. A reel

contains 2500 devices.

(3) Lead-free product. This product is fully WEEE and

RoHS compliant.

2.8

2.8

3.0

3.0

3.3

3.3

3.0

2.5

3.0

1.8

3.0

2.8

3.3

2.5

3.3

2.8

Pin Descriptions

Pin #

Pin Name

Pin Function

1

OUTA

Regulator A output.

2

OUTB

Regulator B output.

3

GND

Ground pin.

4

RSTA

Power on reset for output A. Active low when OUTA is below the reset threshold. RSTA

goes high 50ms (typical) after OUTA rises above the reset threshold.

5

RSTB

Power on reset for output B. Active low when OUTB is below the reset threshold. RSTB

goes high 150ms (typical - can be adjusted using CDLYB) after OUTB rises above the reset

threshold.

6

DLYB

Programmable delay for RESETB. Delay time can be set by connecting a capacitor, CDLYB,

between this pin and ground. Ground this pin if using the default delay time.

7

ENB

Active high enable pin for output B. CMOS compatible input. Connect to IN if not being

used.

8

BYP

Bypass pin for bandgap reference. Connect a 10nF capacitor, CBYP, between this pin and

ground for low noise operation.

9

ENA

Active high enable pin for output A. CMOS compatible input. Connect to IN if not being

used.

10

IN

 2006 Semtech Corp.

Input pin for both regulators.

5

www.semtech.com

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