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IRU3038CS

更新时间： 2024-11-05 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
18页	139K
描述
SYNCHRONOUS PWM CONTROLLER FOR TERMINATION POWER SUPPLY APPLICATIONS

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数据手册

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IRU3038CS 数据手册

Data Sheet No. PD94250

IRU3038

SYNCHRONOUS PWM CONTROLLER

FOR TERMINATION POWER SUPPLY APPLICATIONS

PRELIMINARY DATA SHEET

FEATURES

DESCRIPTION

Synchronous Controller in 14-Pin Package

Operating with single 5V or 12V supply voltage

200KHz to 400KHz operation set by an external

resistor

The IRU3038 controller IC is designed to provide a low

cost synchronous Buck regulator for voltage tracking

applications such DDR memory and general purpose

on-board DC to DC converter. Modern micro processors

combined with DDR memory, need high-speed bandwidth

data bus which requires a particular bus termination volt-

age. This voltage will be tightly regulated to track the

half of chipset voltage for best performance. The IRU3038

together with dual N-channel MOSFETs such as IRF7313,

provide a low cost solution for such applications. This

device features a programmable frequency set from

200KHz to 400KHz, under-voltage lockout for both Vcc

and Vc supplies, an external programmable soft-start

function as well as output under-voltage detection that

latches off the device when an output short is detected.

Soft-Start Function

Fixed Frequency Voltage Mode

500mA Peak Output Drive Capability

Uncommitted Error Amplifier available for DDR

voltage tracking application

1.25V Reference Voltage

Protects the output when control FET is shorted

APPLICATIONS

DDR memory source sink Vtt application

Low cost on-board DC to DC such as

5V to 3.3V, 2.5V or 1.8V

Graphic Card

Hard Disk Drive

TYPICAL APPLICATION

12V

VDDQ

(2.5V)

1uH

0.1uF

1uF

47uF

10TPB100M,

100uF, 55m

Ω

Vcc

DDR

Memory

VREF

1/2 of IRF7313

HDrv

BAT54

or1N4148

IRU3038

Vtt

1.25V @ 3A

2x 6TPB150M,

D03316P-103, 10uH, 3.9A

1/2 of IRF7313

0.1uF

LDrv

PGnd

150uF, 55m

Ω

Comp

2200pF

Gnd

33K

Figure 1 - Typical application of IRU3038 when Vtt tracks the VDDQ.

PACKAGE ORDER INFORMATION

TA (°C)

0 To 70

DEVICE

IRU3038CF

IRU3038CS

PACKAGE

14-Pin Plastic TSSOP (F)

14-Pin Plastic SOIC NB (S)

Rev. 2.0

09/12/02

www.irf.com

12 3 4 5 6 7...18

中文翻译

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与IRU3038CS相关器件

型号	品牌	获取价格	描述	数据表
IRU3038CSPBF	INFINEON	获取价格	Switching Controller, Voltage-mode, 0.5A, 440kHz Switching Freq-Max, PDSO14, PLASTIC, SOIC
IRU3038CSTR	INFINEON	获取价格	暂无描述
IRU3039	INFINEON	获取价格	SYNCHRONOUS PWM CONTROLLER WITH OVER CURRENT PROTECTION
IRU3039CH	INFINEON	获取价格	SYNCHRONOUS PWM CONTROLLER WITH OVER CURRENT PROTECTION
IRU3039CHPBF	INFINEON	获取价格	Switching Controller, Voltage-mode, 400kHz Switching Freq-Max, MOS, 5 X 5 MM, LEAD FREE, M
IRU3039CHTR	INFINEON	获取价格	Switching Controller, Voltage-mode, 400kHz Switching Freq-Max, MOS, 5 X 5 MM, MLPQ-20
IRU3039CHTRPBF	INFINEON	获取价格	Switching Controller, Voltage-mode, 400kHz Switching Freq-Max, MOS, 5 X 5 MM, LEAD FREE, M
IRU3046	INFINEON	获取价格	DUAL SYNCHRONOUS PWM CONTROLLER WITH CURRENT SHARING CIRCUITRY AND LDO CONTROLLER
IRU3046CF	INFINEON	获取价格	DUAL SYNCHRONOUS PWM CONTROLLER WITH CURRENT SHARING CIRCUITRY AND LDO CONTROLLER
IRU3046CFPBF	INFINEON	获取价格	Dual Switching Controller, Voltage-mode, 0.5A, 450kHz Switching Freq-Max, PDSO24, PLASTIC,

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