IRU3033

更新时间： 2024-11-27 22:48:03

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
描述
8-PIN PWM SWITCHER AND LINEAR CONTROLLER IC

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数据手册

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IRU3033 数据手册

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

R10

I/O

12V

V12 Drv2 VFB2

CPU

IRU3033

Drv1

Gnd

Vcc2 Det

VFB1

V12(SW)

VHYST

Core

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

12 3 4 5 6 7...12

中文翻译

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与IRU3033相关器件

型号	品牌	获取价格	描述	数据表
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
IRU3033CSTRPBF	INFINEON	获取价格	Battery Charge Controller, Voltage-mode, PDSO8,
IRU3033CW	INFINEON	获取价格	Switching Regulator/Controller, Voltage-mode, PDSO8,
IRU3034	INFINEON	获取价格	8-PIN PWM SWITCHER CONTROLLER IC WITH CURRENT LIMITING
IRU3034CS	INFINEON	获取价格	8-PIN PWM SWITCHER CONTROLLER IC WITH CURRENT LIMITING
IRU3034CSPBF	INFINEON	获取价格	8-PIN PWM SWITCHER CONTROLLER IC WITH CURRENT LIMITING
IRU3034CSTR	INFINEON	获取价格	Switching Controller, Voltage-mode, PDSO8, PLASTIC, SOIC-8
IRU3034CSTRPBF	INFINEON	获取价格	Switching Controller, Voltage-mode, PDSO8, LEAD FREE, PLASTIC, SOIC-8

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