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IRU3004CF

更新时间： 2024-11-27 22:48:03
品牌 Logo 应用领域
英飞凌 - INFINEON 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
17页 105K
描述
5-BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC WITH DUAL LDO CONTROLLER

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IRU3004CF 数据手册

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Data Sheet No. PD94140  
IRU3004  
5-BIT PROGRAMMABLE SYNCHRONOUS BUCK  
CONTROLLER IC WITH DUAL LDO CONTROLLER  
FEATURES  
DESCRIPTION  
The IRU3004 controller IC is specifically designed to meet  
Meets latest VRM 8.4 specification for PentiumIII  
Provides single chip solution for Vcore, GTL+ and Intel specifications for Pentium IIIä microprocessor  
clock supply applications as well as the next generation P6 family  
On-Board DAC programs the output voltage from processors. The IC provides a single chip controller IC  
1.3V to 3.5V. The IRU3004 remains on for VID code for the Vcore, GTL+ and clock supplies required for the  
of (11111)  
Pentium III applications. The IRU3004 features a pat-  
Dual linear regulator controller on-board for 1.5V ented topology, that in combination with a few external  
GTL+ and 2.5V clock supplies  
Loss-less Short Circuit Protection  
components as shown in the typical application circuit,  
will provide in excess of 20A of output current for an on-  
Synchronous operation allows maximum efficiency board DC-DC converter while automatically providing the  
Patented architecture allows fixed frequency opera- right output voltage via the 5-bit internal DAC meeting  
tion as well as 100% duty cycle during dynamic the latest VRM specification. The IRU3004 also features  
load  
loss-less current sensing by using the RDS(on) of the high  
side power MOSFET as the sensing resistor and a Power  
Good window comparator that switches its open collec-  
Minimum Part Count, No External Compensation  
Soft-Start Function  
High current totem pole driver for direct driving of the tor output low when the output is outside of a ±10%  
external power MOSFET  
Power Good Function  
window. Other features of the device are: under-voltage  
lockout for both 5V and 12V supplies, an external pro-  
grammable soft-start function as well as programming  
the oscillator frequency by using an external capacitor.  
APPLICATIONS  
Pentium III & next generation processor DC to DC  
converter application  
Low Cost Pentium with AGP  
TYPICAL APPLICATION  
Note:Pentium III is trademark of Intel Corp.  
L2  
Q1  
5V  
L1  
VOUT3  
R16  
R17  
C16  
C5  
R1  
C7  
R4  
Q2  
C13  
C3  
C10  
R2  
R3  
R12  
R13  
3.3V  
C4  
C6  
Q3  
VOUT1  
12V  
C11  
R18  
R7  
R8  
V12  
Ct  
V5  
D3  
CS+  
HDrv  
CS-  
LDrv  
Gnd  
VFB3  
R11  
C9  
Lin1  
C15  
C1  
IRU3004  
SS  
D4  
VFB1  
Q4  
C2  
VOUT2  
D2  
D1  
D0  
VFB2  
PGd  
Lin2  
3.3V  
C12  
R14  
R15  
VID4  
VID3  
VID2  
VID1  
VID0  
R5  
C8  
R9  
Power Good  
C14  
Figure 1 - Typical application of the IRU3004.  
PACKAGE ORDER INFORMATION  
TA (8C)  
DEVICE  
PACKAGE  
0 To 70  
0 To 70  
IRU3004CW  
IRU3004CF  
20-Pin Plastic SOIC (W)  
20-Pin Plastic TSSOP (F)  
Rev. 1.7  
07/16/02  
www.irf.com  
1
1234567...17

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