Datasheet > IR3721_09

IR3721_09

更新时间： 2024-11-11 11:09:11

品牌	Logo	应用领域
英飞凌 - INFINEON		监控
页数	文件大小	规格书
16页	335K
描述
Power Monitor IC with

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IR3721_09 数据手册

IR3721

DATA SHEET

Power Monitor IC with

Analog Output

FEATURES

DESCRIPTION

Accurate TruePower^TMmonitor

• 2.5% static accuracy

The IR3721 is a versatile power or current monitor IC

for low-voltage DC-DC converters. The IR3721

monitors the inductor current in buck or multiphase

converters using either a current sensing resistor or the

inductor’s winding resistance (DCR). The output (DI) is

a pulse code modulated signal whose duty ratio is

proportional to the inductor current. An analog voltage

that is proportional to power is realized by connecting

V_Kto V_Oand connecting an RC filter to DI.

• Minimizes dynamic errors

Minimizes power dissipation

• 5mV - 150mV full scale current range

Versatile

• Monitors power or current

• Single buck or multiphase converters

• Inductor DCR or resistive shunt sensing

Simple add-on to existing converters

10 pin 3x3 DFN lead free package

RoHS compliant

The IR3721 uses Patent Pending TruePower^TM

technology to accurately capture highly dynamic power

waveforms typical of microprocessor loads.

TYPICAL APPLICATION CIRCUIT

ORDERING INFORMATION

Device

Package

Order Quantity

IR3721MTRPBF

* IR3721MPBF

10 lead DFN (3x3 mm body)

3000 piece reel

121 piece tube

Samples only

Page 1 of 16

www.irf.com

09/15/08

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