SC1183CSW Semtech Corporation, SC1183CSW Datasheet

SC1183CSW

Manufacturer Part Number

SC1183CSW

Description

Manufacturer

Semtech Corporation

Datasheets

1.SC1183CSW.pdf (12 pages)

2.SC1183CSW.pdf (12 pages)

Specifications of SC1183CSW

Case

SOP

Date_code

2001

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

SC1183CSW

Manufacturer:

NXP

Quantity:

2 500

Current page: 1 of 12
Download datasheet (133Kb)

August 25, 1998

DESCRIPTION

The SC1182/3 combines a synchronous voltage mode

controller with two low-dropout linear regulators

providing most of the circuitry necessary to implement

three DC/DC converters for powering advanced

microprocessors such as Pentium

Deschutes.

The SC1182/3 switching section features an integrat-

ed 5 bit D/A converter, pulse by pulse current limiting,

integrated power good signaling, and logic compatible

shutdown. The SC1182/3 switching section operates

at a fixed frequency of 200kHz, providing an optimum

compromise between size, efficiency and cost in the

intended application areas. The integrated D/A con-

verter provides programmability of output voltage

from 2.0V to 3.5V in 100mV increments and 1.30V to

2.05V in 50mV increments with no external compo-

nents.

The SC1182/3 linear sections are low dropout regula-

tors. The SC1182 supplies 1.5V for GTL bus and 2.5V

for non-GTL I/O.

For the SC1183 both LDO’s are adjustable.

PIN CONFIGURATION

PWRGOOD

PGNDH

PGNDL

GATE1

LDOS1

LDOS2

AGND

OVP

VCC

CS+

CS-

(24 Pin SOIC)

Top View

GATE2

LDOV

VID0

VID1

VID2

VID3

VID4

VOSENSE

BSTH

BSTL

II (Klamath) or

BLOCK DIAGRAM

TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com

PROGRAMMABLE SYNCHRONOUS DC/DC

CONVERTER, DUAL LOW DROPOUT

REGULATOR CONTROLLER

REF.

CONTROLLER

2.5V/ADJ.

FET

FEATURES

APPLICATIONS

ORDERING INFORMATION

Part Number

SC1182CSW

SC1183CSW

Note:

(1) Add suffix ‘TR’ for tape and reel.

652 MITCHELL ROAD NEWBURY PARK CA 91320

Synchronous design, enables no heatsink solution

95% efficiency (switching section)

5 bit DAC for output programmability

On chip power good function

Designed for Intel Pentium

ments

1.5V, 2.5V or Adj. @ 1% for linear section

Pentium

Flexible motherboards

1.3V to 3.5V microprocessor supplies

Programmable triple power supplies

1.265V

LDOV

REF.

(1)

ll or Deschutes microprocessor supplies

Pentium is a registered trademark of Intel Corporation

Package

SO-24

CONTROLLER

1.5V/ADJ.

FET

1.5V/2.5V 0° to 125°C

Voltage

Linear

Adj.

ll VRM8.1 require-

SC1182/3

0° to 125°C

Range (T

Temp.

)

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