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IRU3033CSTR

更新时间： 2024-11-28 13:00:59
品牌 Logo 应用领域
英飞凌 - INFINEON 转换器控制器
页数 文件大小 规格书
12页 78K
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IRU3033CSTR 技术参数

是否Rohs认证： 不符合生命周期：Active
包装说明：,Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.79模拟集成电路 - 其他类型：BATTERY CHARGE CONTROLLER
峰值回流温度（摄氏度）：NOT SPECIFIED处于峰值回流温度下的最长时间：NOT SPECIFIED
Base Number Matches：1

IRU3033CSTR 数据手册

 浏览型号IRU3033CSTR的Datasheet PDF文件第2页浏览型号IRU3033CSTR的Datasheet PDF文件第3页浏览型号IRU3033CSTR的Datasheet PDF文件第4页浏览型号IRU3033CSTR的Datasheet PDF文件第5页浏览型号IRU3033CSTR的Datasheet PDF文件第6页浏览型号IRU3033CSTR的Datasheet PDF文件第7页 
Data Sheet No. PD94147  
IRU3033  
8-PIN PWM SWITCHER AND LINEAR CONTROLLER IC  
FEATURES  
DESCRIPTION  
LDO Controller allows the use of a low cost pass  
transistor for the I/O supply  
The IRU3033 IC combines a switching controller and a  
linear regulator controller all in a compact 8-pin surface  
mount package, providing a total solution for dual sup-  
ply processor applications such as an Intel P55Cä , AMD  
K6ä , as well as Cyrix 6X86Lä and the M2ä proces-  
sors. Typically in these applications a dual supply regu-  
lator converts 5V to 3.3V for I/O supply and a jumper  
programmable supply of 1.25V to 3.5V for Core supply.  
The linear regulator controller portion in the IRU3033 is a  
programmable controller allowing flexibility for the I/O  
regulator and has a minimum of 50mA drive current ca-  
pability designed to provide ample current for an exter-  
nal pass transistor. The IC uses an internal regulator  
generated from the 12V supply to power the controller  
as well as the 12V supply to drive the power MOSFET,  
allowing a low cost N-channel MOSFET switch to be  
used. The IC also includes an error comparator for fast  
transient response, a precise voltage reference for set-  
ting the output voltage as well as a direct drive of the  
MOSFET for the minimum part count.  
8-Pin SOIC combines switching and linear  
controller  
Internal pre-regulator eliminates cross talk  
between switching and linear regulators  
Automatic shut down of the linear regulator when  
connected to the Vcc2 detect pin  
On-Board MOSFET Driver  
Fastest transient response of any controller  
method (0 to 100% Duty Cycle in 100ns)  
1% Internal Voltage Reference  
Internal Under-Voltage Lockout protects MOSFET  
during start-up  
APPLICATIONS  
Dual supply low voltage processor applications,  
such as: P55Cä , CYRIX M2ä , POWER PCä  
and AMD K6ä  
Simple 5V to 3.3V switcher for Pentium with AGP  
or Pentium IIä applications  
TYPICAL APPLICATION  
Q1  
5V  
R10  
C1  
R6  
C6  
I/O  
R9  
12V  
D2  
R7  
5V  
C8  
V12 Drv2 VFB2  
CPU  
R8  
IRU3033  
Drv1  
Gnd  
Vcc2 Det  
VFB1  
V12(SW)  
VHYST  
L2  
C3  
Core  
R3  
C5  
R4  
R5  
L1  
C7  
Q2  
C2  
D1  
Notes: P54C, P55C, Pentium II are  
trademarks of Intel Corp. K5 & K6  
are trademarks of AMD Corp. Cyrix  
6X86L, M1, M2 are trademarks of  
Cyrix Corp. Power PC is trademark  
of IBM Corp.  
Figure 1 - Typical application of IRU3033 in a flexible mother board designed for  
Intel P55ä , P54ä , AMD K5, K6ä as well as Cyrix M1ä and M2ä applications.  
PACKAGE ORDER INFORMATION  
TA (°C)  
8-PIN PLASTIC SOIC (S)  
0 To 70  
IRU3033CS  
Rev. 1.7  
07/17/02  
www.irf.com  
1
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