Datasheet > IR3831M

IR3831M

更新时间： 2024-09-17 01:21:31

品牌	Logo	应用领域
英飞凌 - INFINEON		双倍数据速率
页数	文件大小	规格书
31页	939K
描述
HIGHLY EFFICIENT INTEGRATED SYNCHRONOUS BUCK REGULATOR FOR DDR APPLICATIONS

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数据手册

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IR3831M 数据手册

PD60363

IR3831MPbF

SupIRBuck

HIGHLY EFFICIENT INTEGRATED

SYNCHRONOUS BUCK REGULATOR FOR DDR APPLICATIONS

Features

Description

The IR3831 SupIRBuck^TMis an easy-to-use, fully

integrated and highly efficient DC/DC regulator.

The MOSFETS co-packaged with the on-chip

PWM controller make IR3831 a space-efficient

solution, providing accurate power delivery for

DDR memory applications.

•

Wide Input Voltage Range 1.0V to 16V

Wide Output Voltage Range 0.6V to 0.9*Vin

Continuous 8A Load Capability

Integrated Bootstrap-diode

High Bandwidth E/A for excellent transient

performance

•

Programmable Switching Frequency up to 1.5 MHz

Programmable Over Current Protection (Hiccup)

PGood output

IR3831 is configured to generate termination

voltage (VTT) for DDR memory applications.

Programmable Soft-Start

IR3831 offers programmability of start up time,

switching frequency and current limit while

operating in wide input and output voltage range.

Enable Input with Voltage Monitoring Capability

Enhanced Pre-Bias Start-up

Vp input for DDR Tracking applications

-40^oC to 125^oC operating junction temperature

Thermal Protection

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.

5mm x 6mm Power QFN Package, 0.9 mm height

Lead-free, halogen-free and RoHS compliant

Applications

•

Server Applications

Storage Applications

Embedded Telecom Systems

Distributed Point of Load Power Architectures

Netcom Applications

1.0V <Vin<16V

4.5V <Vcc<5.5V

Enable

Vin

Boot

Vcc

VDDQ

PGood

OCSet

Comp

PGnd

SS/ SD

Gnd

Fig. 1. Typical application diagram

11/05/10

12 3 4 5 6 7...31

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