IRU3021M

更新时间： 2024-11-27 22:48:03

品牌	Logo	应用领域
英飞凌 - INFINEON		控制器
页数	文件大小	规格书
8页	116K
描述
5-BIT PROGRAMMABLE SYNCHRONOUS BUCK PLUS TRIPLE LDO CONTROLLER

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中文翻译

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数据手册

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IRU3021M 数据手册

Data Sheet No. PD94145

IRU3021M

5-BIT PROGRAMMABLE SYNCHRONOUS BUCK

PLUS TRIPLE LDO CONTROLLER

FEATURES

DESCRIPTION

Provides single chip solution for Vcore, GTL+,

AGP bus, and 1.8V

The IRU3021M controller IC is specifically designed to

meet Intel specification for next generation microproces-

sor applications requiring multiple on-board regulators.

The IRU3021M provides a single chip controller IC for

the Vcore, three LDO controllers, one with an automatic

select pin that connects to the Type Detect pin of the

AGP slot for the AGP VDDQ supply, one for GTL+ and

the other for the 1.8V chip set regulator as required for

the next generation PC applications. The IRU3021M uses

N-channel MOSFET as pass transistor for Vout2(VDDQ),

Vout3(1.5V) and Vout4(1.8V). No external resistor di-

vider is necessary for any of the regulators. The switch-

ing regulator feature a patented topology that in combi-

nation with a few external components as shown in the

typical application circuit, will provide well in excess of

20A of output current for an on-board DC/DC converter

while automatically providing the right output voltage via

the 5-bit internal DAC .The IRU3021M also features, loss-

less current sensing for both switcher by using the R^DS(on)

of the high-side power MOSFET as the sensing resistor,

an output under-voltage shutdown that detects short cir-

cuit condition for the linear outputs and latches the sys-

tem off, and a Power Good window comparator that

switches its open collector output low when any one of

the outputs is outside of a pre-programmed window.

Automatic voltage selection for AGP slot VDDQ

supply

Linear Regulator Controller On-Board for 1.8V

Designed to meet Intel latest VRM specification

for next generation microprocessors

On-Board DAC programs the output voltage from

1.3V to 3.5V

Linear Regulator Controller On-Board for 1.5V

GTL+ Supply

Loss-less Short Circuit Protection for all Outputs

Synchronous operation allows maximum effi-

ciency

Patented architecture allows fixed frequency

operation as well as 100% duty cycle during

dynamic load

Minimum Part Count

Soft-Start

High current totem pole driver for direct driving of

the external Power MOSFET

Power Good function monitors all outputs

Over-Voltage Protection Circuitry Protects the

switcher output and generates a Fault output

APPLICATIONS

Total Power Solution for next generation Intel

processor application

TYPICAL APPLICATION

3.3V

LINEAR

CONTROL

SWITCHER

Vout1

Vout4

CONTROL

Vout2

IRU3021M

LINEAR

CONTROL

Vout3

3021Mapp3-1.1

Figure 1 - Typical application of the IRU3021M.

PACKAGE ORDER INFORMATION

TA (ꢀC)

DEVICE

PACKAGE

0 To 70

IRU3021MCW

28-Pin Plastic SOIC WB

Rev. 1.4

07/24/01

12 3 4 5 6 7 8

中文翻译

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与IRU3021M相关器件

型号	品牌	获取价格	描述	数据表
IRU3021MCW	INFINEON	获取价格	5-BIT PROGRAMMABLE SYNCHRONOUS BUCK PLUS TRIPLE LDO CONTROLLER
IRU3021MCWPBF	INFINEON	获取价格	Switching Controller, 217kHz Switching Freq-Max, PDSO28, PLASTIC, SOIC-28
IRU3021MCWTR	INFINEON	获取价格	Switching Controller, Current/voltage-mode, 217kHz Switching Freq-Max, PDSO28, PLASTIC, SO
IRU3027	INFINEON	获取价格	5-BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC WITH TRIPLE LDO CONTROLLER
IRU3027CW	INFINEON	获取价格	5-BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC WITH TRIPLE LDO CONTROLLER
IRU3027CWPBF	INFINEON	获取价格	Switching Controller, 217kHz Switching Freq-Max, PDSO28, PLASTIC, SOIC-28
IRU3033	INFINEON	获取价格	8-PIN PWM SWITCHER AND LINEAR CONTROLLER IC
IRU3033CS	INFINEON	获取价格	8-PIN PWM SWITCHER AND LINEAR CONTROLLER IC
IRU3033CSPBF	INFINEON	获取价格	Switching Controller,
IRU3033CSTR	INFINEON	获取价格	暂无描述

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