SC202F datasheet(1/17 Pages) SEMTECH

Il numero della parte	SC202F

Spiegazioni elettronici	3.5MHz, 500mA Step-down Regulator with Integrated Inductor

PDF	17 Pages

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Produttore elettronici	SEMTECH [Semtech Corporation]

Homepage	http://www.semtech.com

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POWER MANAGEMENT

1

SC202F

3.5MHz, 500mA Step-down

Regulator with Integrated Inductor

Features

Input Voltage — 2.9V to 5.5V

Output Voltage — 0.8V to 3.3V

Output current capability — 500mA

Internal inductor

15 programmable output voltages

Fast transient response

Temperature range — -40 to +85°C

Oscillator frequency — 3.5MHz

100% duty cycle capability

Quiescent current — 11mA typ

Shutdown current — 0.1μA typ

Internal soft-start

Over-voltage protection

Current limit and short circuit protection

Over-temperature protection

Under-voltage lockout

Floating control pin protection

MLPQ-13 — 2.5 x 3.0 x 1.0 (mm) package

Lead-free and halogen-free

WEEE and RoHS compliant

Applications

Optical modules, GN1157B, GN1599 etc

Set top boxes

Telecommunication equipment

Power rails demand small voltage ripple and compact

size



Description

The SC202F is a high efficiency 500mA step-down regula-

tor that includes an integrated inductor inside the

package. The input voltage range makes it ideal for

battery operated applications with space limitations. The

SC202F operates at a fixed 3.5MHz switching frequency in

normal PWM (Pulse-Width Modulation) mode. The

SC202F also includes fifteen programmable output

voltage settings that can be selected using the four

control pins, eliminating the need for external feedback

resistors. The output voltage can be fixed to a single

setting or dynamically switched between different levels.

Pulling all four control pins low disables the output.

The SC202F provides several protection features to safe-

guard the device under stressed conditions. These

include short circuit protection, over-temperature protec-

tion, under-voltage lockout, and soft-start to control

in-rush current. These features, coupled with the small

2.5 x 3.0 x 1.0 (mm) package, make the SC202F a versatile

device ideal for step-down regulation in products needing

high efficiency and a small PCB footprint.

SC202F

IN

CTL3

CTL2

CTL1

CTL0

SN S

OU T

GN D

V OUT

0.8V to 3.3V

V IN

2.9V to 5.5V

C OUT

10μF

C IN

4.7μF

C ontrol Logic

Lines

LX

NC

Typical Application Circuit

Rev 2.0

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