Datasheet > IR3891M

IR3891M

更新时间： 2024-11-06 01:21:31

品牌	Logo	应用领域
英飞凌 - INFINEON		/
页数	文件大小	规格书
51页	1697K
描述
Single-Input Voltage, Synchronous Buck Regulator

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IR3891M 数据手册

Dual output, 4A/Phase, Highly Integrated SupIRBuck^®

IR3891

Single-Input Voltage, Synchronous Buck Regulator

FEATURES

DESCRIPTION

The IR3891 SupIRBuck^®is an easy-to-use, fully

integrated and highly efficient DC/DC regulator. The

onboard PWM controller and MOSFETs make IR3891

a space-efficient solution, providing accurate power

delivery for low output voltage.

• 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, 4A/Phase

IR3891 is

versatile regulator which offers

• Enhanced Line/Load Regulation with Feed-

Forward

programmability of switching frequency and a fixed

current limit while operating in wide input and output

voltage range.

• Programmable Switching Frequency up to 1.5MHz

• Internal Digital Soft-Start

• Enable input with Voltage Monitoring Capability

The switching frequency is programmable from

300kHz to 1.5MHz for an optimum solution.

• Thermally compensated current limit and Hiccup

Mode Over Current Protection

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.

• 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

APPLICATIONS

• Open Feedback Line Protection

• Sever Applications

• Over Voltage Protection

• Netcom Applications

• Interleaved Phases to reduce Input Capacitors

• Monotonic Start-Up

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

• Set Top Box Applications

• Storage Applications

• Small Size 5mm x 6mm PQFN

• Embedded telecom Systems

• Distributed Point of Load Power Architectures

• Computing Peripheral Voltage regulators

• General DC-DC Converters

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

ORDERING INFORMATION

Base Part

Standard Pack

Quantity

4000

Orderable Part

Number

Package Type

Form

Number

IR3891

PQFN 5mm x 6mm

Tape and Reel

IR3891MTRPBF

IR3891

PBF

Lead Free

Tape and Reel

Package Type

www.irf.com

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May 29, 2014

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与IR3891M相关器件

型号	品牌	获取价格	描述	数据表
IR3891M_15	INFINEON	获取价格	Single-Input Voltage, Synchronous Buck Regulator
IR3891MPBF	INFINEON	获取价格	Dual output, 4A/Phase, Highly Integrated SupIRBuck
IR3891MTR1PBF	INFINEON	获取价格	Dual output, 4A/Phase, Highly Integrated SupIRBuck
IR3891MTRPBF	INFINEON	获取价格	Dual output, 4A/Phase, Highly Integrated SupIRBuck
IR3892	INFINEON	获取价格	Dual output, 6A/Phase, Highly Integrated SupIRBuck
IR3892M	INFINEON	获取价格	Single-Input Voltage, Synchronous Buck Regulator
IR3892M_15	INFINEON	获取价格	Single-Input Voltage, Synchronous Buck Regulator
IR3892MPBF	INFINEON	获取价格	Dual output, 6A/Phase, Highly Integrated SupIRBuck
IR3892MTR1PBF	INFINEON	获取价格	Dual output, 6A/Phase, Highly Integrated SupIRBuck
IR3892MTRPBF	INFINEON	获取价格	Dual output, 6A/Phase, Highly Integrated SupIRBuck

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