SC1159SW.TR Semtech Corporation, SC1159SW.TR Datasheet

SC1159SW.TR

Manufacturer Part Number

SC1159SW.TR

Description

Program.DC/DC Contr. 5bit VID

Manufacturer

Semtech Corporation

Datasheet

1.SC1159SW.TR.pdf (20 pages)

Specifications of SC1159SW.TR

Pack_quantity

1000

Comm_code

85423990

Lead_time

994

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

SC1159SW.TR

Manufacturer:

SEMTECH/美国升特

Quantity:

20 000

Current page: 1 of 20
Download datasheet (330Kb)

The SC1159 is a synchronous-buck switch-mode con-

troller designed for use in single ended power supply ap-

plications where efficiency is the primary concern. The

controller is a hysteretic type, with a user selectable hys-

teresis. The SC1159 is ideal for implementing DC/DC

converters needed to power advanced microprocessors

such as Pentium

tiple processor configurations. Inhibit, under-voltage lock-

out and soft-start functions are included for controlled

power-up.

SC1159 features include an integrated 5 bit D/A con-

verter, temperature compensated voltage reference,

current limit comparator, over-current protection, and an

adaptive deadtime circuit to prevent shoot-through of

the power MOSFET during switching transitions. Power

good signaling, logic compatible shutdown, and over-volt-

age protection are also provided. The integrated D/A

converter provides programmability of output voltage

from 1.050V to 1.825V in 25mV increments.

The SC1159 high side driver can be configured as either

a ground-referenced or as a floating bootstrap driver.

The high and low side MOSFET drivers have a peak cur-

rent rating of 2 amps.

Revision 3, December 2002

POWER MANAGEMENT

Description

Typical Application Circuit

llI and Athlon

+5V

0.01

20k

0.001

, in both single and mul-

10k

0.1

Hysteretic Controller with VRM 8.5 VID Range

IOUT

DROOP

OCP

VHYST

VREFB

VSENSE

AGND

SOFTST

N/C

LODRV

LOHIB

DRVGND

LOWDR

DRV

*) for the values see specific application circuit somewhere else in the datasheet

SC1159CSW

LOSENSE

HISENSE

BOOTLO

PWRGD

HIGHDR

IOUTLO

INHIBIT

VIN12V

VID25

BOOT

VID0

VID1

VID2

VID3

C10

+12V

Programmable Synchronous DC/DC

10k

1.0

R14

1.6

0.033

R12

1.0

Features

FDB6035AL

+5V

FDB7030BL

Applications

R10

Programmable hysteresis

5 bit DAC programmable output (1.050V-1.825V)

On-chip power good and OVP functions

Designed to meet latest Intel specifications

Up to 95% efficiency

+1% tolerance over temperature

Server Systems and Workstations

Pentium

AMD Athlon

Multiple Microprocessor Supplies

Voltage Regulator Modules

R11

Cin

0.1

1.0uH

PWRGD

INHIB

Cout

Bulk

III Core Supplies

Cin

Bulk

"POWER GOOD"

"INHIBIT"

0.5uH

Core Supplies

Cout

Vin +5V/12V

1.05 to 1.825V

SC1159

www.semtech.com

Related parts for SC1159SW.TR

Related keywords

SC1159SW.TR datasheet
SC1159SW.TR data sheet
SC1159SW.TR pdf datasheet
SC1159SW.TR component
SC1159SW.TR part
SC1159SW.TR distributor
SC1159SW.TR RoHS
SC1159SW.TR datasheet download