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IRU3021MCWTR PDF预览

IRU3021MCWTR

更新时间： 2024-11-28 19:48:23
品牌 Logo 应用领域
英飞凌 - INFINEON 开关光电二极管
页数 文件大小 规格书
10页 61K
描述
Switching Controller, Current/voltage-mode, 217kHz Switching Freq-Max, PDSO28, PLASTIC, SOIC-28

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中文翻译

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IRU3021MCWTR 数据手册

 浏览型号IRU3021MCWTR的Datasheet PDF文件第2页浏览型号IRU3021MCWTR的Datasheet PDF文件第3页浏览型号IRU3021MCWTR的Datasheet PDF文件第4页浏览型号IRU3021MCWTR的Datasheet PDF文件第5页浏览型号IRU3021MCWTR的Datasheet PDF文件第6页浏览型号IRU3021MCWTR的Datasheet PDF文件第7页 
Data Sheet No. PD94145  
IRU3021M  
5-BIT PROGRAMMABLE SYNCHRONOUS BUCK  
CONTROLLER IC WITH 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 RDS(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  
5V  
3.3V  
LINEAR  
CONTROL  
SWITCHER  
CONTROL  
VOUT1  
V
OUT  
2
3
IRU3021M  
LINEAR  
CONTROL  
LINEAR  
CONTROL  
VOUT  
VOUT4  
Figure 1 - Typical application of the IRU3021M.  
PACKAGE ORDER INFORMATION  
TA (8C)  
DEVICE  
PACKAGE  
0 To 70  
IRU3021MCW  
28-Pin Plastic SOIC WB  
Rev. 1.5  
07/17/02  
www.irf.com  
1
1234567...10

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