Dual output, 6A/Phase, Highly Integrated SupIRBuck® Single-Input Voltage, Synchronous Buck Regulator0 pages

International

l«R Rectifier

Dual output, 6A/Phase, Highly Integrated Sup/RBuck

Single-Input Voltage, Synchronous Buck Regulator

IR3892

FEATURES

• Single 5V to 21V application

• Wide Input Voltage Range from 1V to 21V with

external Vcc

• Output Voltage Range: 0.5V to 0.86*PVin

• Dual output, 6A/Phase

• Enhanced Line/Load Regulation with Feed-

Forward

• Programmable Switching Frequency up to 1.0MHz

• Internal Digital Soft-Start

• Enable input with Voltage Monitoring Capability

• Thermally compensated current limit and Hiccup

Mode Over Current Protection

• External synchronization with Smooth Clocking

• Precision Reference Voltage (0.5V +/-1%)

• Seq pin for Sequencing Applications

• Integrated MOSFETs, drivers and Bootstrap diode

• Thermal Shut Down

• Open Feedback Line Protection

• Over Voltage Protection

• Interleaved Phases to reduce Input Capacitors

• Monotonic Start-Up

• Operating Junction Temp: -40°C<Tj<125°C

• Small Size 5mm x 6mm PQFN

• Lead-free, Halogen-free, and RoHS Compliant

DESCRIPTION

The IR3892 Sup/RBuck® is an easy-to-use, fully

integrated and highly efficient DC/DC regulator. The

onboard PWM controller and MOSFETs make IR3892

a space-efficient solution, providing accurate power

delivery for low output voltage.

IR3892 is a versatile regulator which offers

programmability of switching frequency and a fixed

current limit while operating in wide input and output

voltage range.

The switching frequency is programmable from

300kHz to 1.0MHz for an optimum solution.

It also features important protection functions, such as

Over Voltage Protection (OVP), Pre-Bias startup,

hiccup current limit and thermal shutdown to give

required system level security in the event of fault

conditions.

APPLICATIONS

• Sever Applications

• Netcom Applications

• Set Top Box Applications

• Storage Applications

• Embedded telecom Systems

• Distributed Point of Load Power Architectures

• Computing Peripheral Voltage regulators

• General DC-DC Converters

ORDERING INFORMATION

IR3892 — □ □

urn

PBF —Lead Free

TR1/TR—Tape and Reel

M —Package Type

1

www.irf.com © 2013 International Rectifier

August 02, 2013