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IR3837MTR1PBF

HIGHLY INTEGRATED 14A SINGLE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR

International Rectifier 

PD97511

IR3837MPbF

SupIRBuckTM

HIGHLY INTEGRATED 14A

SINGLE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR

Features

• Greater than 96% Maximum Efficiency

• Single 16V Application

• Single 5V Application

• Wide Output Voltage Range: 0.6V to 0.9*Vin

• Continuous 14A Load Capability

• Programmable Switching Frequency up to 1.5MHz

• Internal Digital Soft-Start

• Enable Input with Voltage Monitoring Capability

• Hiccup Mode Over Current Protection

• Internal LDO

• External Synchronization

• Enhanced PreBias Start up

• External Reference for Margining Purposes

• Input for Tracking Applications

• Integrated MOSFET Drivers and Bootstrap Diode

• Operating Junction Temp: -40oC <Tj<125oC

• Thermal Shut Down

• Power Good Output with Tracking Capability

• Over Voltage Detection Feature

• Pin Compatible with 6A and 10A Versions

• Small Size 5mmx6mm PQFN, 0.9 mm Height

• Lead-free, Halogen-free and RoHS Compliant

Description

The IR3837 SupIRBuckTM is an easy-to-use, fully

integrated and highly efficient DC/DC regulator.

The onboard PWM controller and MOSFETs

make IR3837 a space-efficient solution, providing

accurate power delivery for low output voltage

applications.

IR3837 is a versatile regulator which offers

programmability of switching frequency and

current limit while operates in wide input and

output voltage range.

The switching frequency is programmable from

250kHz to 1.5MHz for an optimum solution.

It also features important protection functions,

such as Pre-Bias startup, hiccup current limit and

thermal shutdown to give required system level

security in the event of fault conditions.

IR3837 offers margining capability through Vref

pin. During the margining operation, PGood

tracks Vref via feedback to ensure correct status

of the output voltage.

Applications

• Netcom and Telecom Applications

• Data Center Applications

• Distributed Point of Load Power Architectures

The internal LDO enables the device to operate

from a single supply. This internal LDO can be

bypassed when an external bias voltage is

available.

Fig. 1. Typical application diagram

Rev 1.31

1

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