SC2602STRT Semtech Corporation, SC2602STRT Datasheet

SC2602STRT

Manufacturer Part Number

SC2602STRT

Description

soic 14/Synchronous Voltage-Mode Controller for Distributed Power-Supply

Manufacturer

Semtech Corporation

Datasheets

1.SC2602STRT.pdf (16 pages)

2.SC2602STRT.pdf (16 pages)

Specifications of SC2602STRT

Pack_quantity

2500

Comm_code

85423990

Lead_time

994

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

SC2602STRT

Manufacturer:

SEMTECH

Quantity:

15 000

Company:

Meier Automation Equipment Co., Limited

Part Number:

SC2602STRT

Manufacturer:

SEMTECH/美国升特

Quantity:

20 000

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The SC2602 and SC2602A are low-cost, full featured,

synchronous voltage-mode controllers designed for use

in single ended power supply applications where efficiency

is of primary concern. Synchronous operation allows for

the elimination of heat sinks in many applications. The

SC2602s are ideal for implementing DC/DC converters

needed to power advanced microprocessors in low cost

systems, or in distributed power applications where effi-

ciency is important. Internal level-shift, high-side drive

circuitry, and preset shoot-thru control, allows the use of

inexpensive N-channel power switches.

SC2602s features include temperature compensated

voltage reference, triangle wave oscillator and current

sense comparator circuitry. Power good signaling, shut-

down, and over voltage protection are also provided.

The SC2602 operates at a fixed 200kHz and the

SC2602A at 500kHz, providing a choice for optimum

compromise between efficiency, external component size,

and cost.

Two SC2602s can be used together to sequence power up

of telecom systems. The power good of the first SC2602

connected to the enable of the second SC2602 makes

this possible.

POWER MANAGEMENT

Revision: October 13, 2004

Description

Typical Application Circuit

Typical Distributed Power Supply

Figure 1.

OVP

PWRGD

+5V

0.1

MBR0520

VCC

OVP

OCSET

PHASE

DRVH

PGND

PWRGD

SC2602

SS/SHDN

SENSE

COMP

DRVL

BSTH

BSTL

GND

4.99K

0.1

for Distributed Power Supply Applications

820pF

1.0

Synchronous Voltage Mode Controller

+12V

3.9

2.2

SHDN

Features

Applications

Synchronous operation for high efficiency (95%)

On-chip power good and OVP functions

Small size with minimum external components

Soft Start

Enable function

Microprocessor core supply

Low cost synchronous applications

Voltage Regulator Modules (VRM)

DDR termination supplies

Networking power supplies

Sequenced power supplies

STP40NE

DS(ON)

current sensing

NOTE:

2uH

*) Vout = 1.265 x (1+R8/R7)

10.0

127

180/4V

680/6.3V

SC2602/SC2602A

C10

180/4V

124*

680/6.3V

C11

180/4V

680/6.3V

C12

180/4V

Vin

C13

180/4V

www.semtech.com

Vout=2.5V

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