SC410 SEMTECH [Semtech Corporation], SC410 Datasheet

SC410

Manufacturer Part Number

SC410

Description

3A EcoSpeed TM Step-Down Regulator with LDO and Ultrasonic Power Save

Manufacturer

SEMTECH [Semtech Corporation]

Datasheets

1.SC410.pdf (26 pages)

2.SC410.pdf (26 pages)

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Current page: 1 of 26
Download datasheet (610Kb)

POWER MANAGEMENT

Features

Applications

Typical Application Circuit

October 26, 2010

Input voltage — 5.5V to 24V

Output voltage — 0.75V to 7.5V

Output current — Up to 3A

Internal reference — + 1%

Small ceramic capacitors

Power good pin (open-drain)

Patented adaptive on-time control:

Fault protection features:

Internal soft-start

Ultrasonic power save and smart PSAVE

Internal LDO for bias voltage

Ultra-small lead-free 3 x 3mm, 10-Pin MLPD package

WEEE and RoHS compliant

Networking Equipment, Embedded Systems

Medical Equipment, Offi ce Automation

Instrumentation, Portable Systems

Consumer Devices such as DTV and Set-top Boxes

POL Converters

•

Enable

Excellent transient response

Programmable pseudo-fixed frequency during

CCM

Cycle-by-cycle current limit

Short circuit protection

Over and under output voltage protection

Over-temperature

TON

LDO2

LDO1

VIN

TON

LDO

AGND

SC410

PGOOD

3A EcoSpeed

PGND

with LDO and Ultrasonic Power Save

BST

Description

The SC410 is an integrated, synchronous 3A EcoSpeed

step-down regulator. It incorporates Semtech’s advanced,

patented adaptive on-time architecture to achieve best-

in-class dynamic performance using point-of-load appli-

cations. The input voltage range is 5.5V to 24V with a

programmable output voltage from 0.75V up to 7.5V. The

device features an internal LDO and ultrasonic PSAVE

mode for high effi ciency across the output load range.

Adaptive on-time control provides programmable

pseudo-fi xed frequency operation in continuous conduc-

tion and excellent transient performance. The switching

frequency can be set from 200kHz to 1MHz, allowing the

designer to reduce external LC fi ltering and minimize light

load (standby) losses.

Additional features include cycle-by-cycle current limit,

soft start, input UVLO and output OV protection, and over

temperature protection. The open-drain PGOOD pin pro-

vides output status. Standby current is less than 10μA

when disabled.

The device is available in a low profi le, thermally enhanced

MLPD 3 x 3mm 10-pin package.

BST

Step-Down Regulator

OUT

TOP

BOT

PGOOD

SC410

OUT

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