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IRU3073CQ

更新时间： 2024-11-21 03:44:35

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过电流保护
页数	文件大小	规格书
21页	237K
描述
SYNCHRONOUS PWM CONTROLLER WITH OVER-CURRENT PROTECTION / LDO CONTROLLER

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数据手册

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IRU3073CQ 数据手册

Data Sheet No. PD94699

IRU3073

SYNCHRONOUS PWM CONTROLLER WITH

OVER-CURRENT PROTECTION / LDO CONTROLLER

FEATURES

DESCRIPTION

Synchronous Controller plus one LDO controller

Current Limit using MOSFET Sensing

Single 5V/12V Supply Operation

Programmable Switching Frequency up to

400KHz

The IRU3073 controller IC is designed to provide a low

cost synchronous Buck regulator for on-board DC to DC

converter for multiple output applications.

The outputs can be programmed as low as 0.8V for low

voltage applications.

Soft-Start Function

Fixed Frequency Voltage Mode

Precision Reference Voltage Available

Uncommitted Error Amplifier available for DDR

voltage tracking application

Selectable over-current protection is provided by using

external MOSFET's on-resistance for optimum cost and

performance.

This device features a programmable frequency set from

200KHz to 400KHz, under-voltage lockout for all input

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.

APPLICATIONS

DDR memory source sink VTT application

Low cost on-board DC to DC such as

12V/5V to output voltages as low as 0.8V

Graphic Card

Hard Disk Drive

Multi-Output Applications

TYPICAL APPLICATION

3.3V

Vcc

12V

Drv2

Fb2

VOUT2

VcH

VcL

+5V

IRU3073

HDrv

0.1uF

VREF

OCSet

LDrv

VOUT1

Comp

C10

SS/SD

R10

C11

Fb1

Gnd

PGnd

R11

Figure 1 - Typical application of IRU3073.

PACKAGE ORDER INFORMATION

TA (°C)

DEVICE

PACKAGE

0 To 70

IRU3073CQ

16-Pin Plastic QSOP NB (Q)

Rev. 1.0

09/17/03

www.irf.com

12 3 4 5 6 7...21

中文翻译

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