IR3476_13 datasheet, PDF - EEWORLD Datasheet

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IR3476_13: DescriptionCAP TANT 330UF 2.5V 20% 2917; CategoryPassive components; File Size877KB，21 Pages; ManufacturerInternational Rectifier （ Infineon ）; Websitehttp://www.irf.com/

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IR3476_13 Overview

CAP TANT 330UF 2.5V 20% 2917

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12A Highly Integrated SupIRBuck

IR3476

FEATURES

•

Input Voltage Range: 3V to 27V

•

Output Voltage Range: 0.5V to 12V

•

Continuous 12A Load Capability

•

Constant On‐Time Control

•

Compensation Loop not Required

•

Excellent Efficiency at Very Low Output Currents

•

Programmable Switching Frequency and Soft Start

•

Thermally Compensated Over Current Protection

•

Power Good Output

•

Precision Voltage Reference (0.5V, +/‐1%)

•

Enable Input with Voltage Monitoring Capability

•

Pre‐bias Start Up

•

Thermal Shut Down

•

Under/Over Voltage Fault Protection

•

Forced Continuous Conduction Mode Option

•

Small, Low Profile 5mm x 6mm QFN Package

DESCRIPTION

The IR3476 SupIRBuck

is an easy‐to‐use, fully integrated

and highly efficient DC/DC voltage regulator. The onboard

constant on time hysteretic controller and MOSFETs make

IR3476 a space‐efficient solution that delivers up to 12A of

precisely controlled output voltage.

Programmable switching frequency, soft start, and

thermally compensated over current protection allows for

a very flexible solution suitable for many different

applications and an ideal choice for battery powered

applications.

Additional features include pre‐bias startup, very precise

0.5V reference, under/over voltage shutdown, thermal

protection, power good output, and enable input with

voltage monitoring capability.

APPLICATIONS

•

Notebook and Desktop Computers

•

Consumer Electronics – STB, LCD, TV, Printers

•

12V and 24V Distributed Power Systems

•

General Purpose POL DC‐DC Converters

•

Game Consoles and Graphics Cards

BASIC APPLICATION

EFFICIENCY

95%

85%

Efficiency

75%

65%

55%

45%

0.01

19VIN

12VIN

8VIN

0.1

Figure 1: IR3476 Basic Application Circuit

Load Current (A)

100

Figure 2: IR3476 Efficiency

March 27, 2013 | V2.2 | PD97603

IR3476_13 Related Products

	IR3476_13	2R5TPE330M9	IR3476	IR3476MTR1PBF	IR3476MTRPBF
Description	CAP TANT 330UF 2.5V 20% 2917	CAP TANT 330UF 2.5V 20% 2917	CAP TANT 330UF 2.5V 20% 2917	12 A SWITCHING REGULATOR, 750 kHz SWITCHING FREQ-MAX, QCC17	CAP TANT 330UF 2.5V 20% 2917

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