WMSIC Electronic Components

RENESAS IW673-20 IW673

ModelIW673-20
PackageSOT-23-6
BrandRENESAS
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RENESAS IW673-20
Type
RENESAS
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RENESAS
Electronic Component
IW673-20
Electronic Component
1
Package
SOT-23-6
Electronic Component
Synchronous Rectifier Controller
Electronic Component
0.027g
Electronic Component
1
Features
(CC)
Electronic Component
BM0265125547
Electronic Component
DCM
Operating Temperature
40℃~+150℃
Operating Voltage
25V
Electronic Component
Electronic Component
Isolation
Isolated
Electronic Component
Electronic Component

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

IW673-20数字绿模同步整流控制器产品概述

IW673-20是瑞萨电子针对中小功率反激式电源开发的数字绿模同步整流控制器,核心定位为低功耗、高效率、恒流输出的电源控制方案,广泛适配LED驱动、小型适配器等场景。

一、核心特性与技术定位

该控制器集成数字控制架构与绿模(Green-Mode)节能技术,结合同步整流设计,解决传统肖特基整流器效率低、待机功耗高的问题,同时支持恒流(CC)模式与断续导通模式(DCM),满足反激拓扑下的稳定输出需求:

  1. 数字绿模节能:通过动态调整工作频率与占空比,实现轻载/空载下的低待机功耗,符合国际能效标准;
  2. 同步整流驱动:替代传统二极管整流,降低导通损耗,提升电源转换效率(典型效率可超90%);
  3. 恒流输出控制:内置恒流环路,无需额外复杂电路即可实现稳定的电流输出,适配LED等恒流负载;
  4. DCM工作模式:适合中小功率(通常<10W)反激拓扑,简化磁设计,降低EMI干扰风险。

二、关键技术参数

IW673-20的核心参数适配其应用场景,关键指标如下:

  • 工作电压:额定25V(电源输入范围支持宽电压适配);
  • 拓扑结构:反激式(Flyback);
  • 输出模式:恒流(CC)模式;
  • 工作模式:断续导通模式(DCM);
  • 封装类型:SOT-23-6紧凑型贴片封装(体积小,适合小型化产品);
  • 品牌:RENESAS(瑞萨电子)。

注:其他扩展参数(如待机功耗、输出电流精度、工作温度范围等)需参考瑞萨官方 datasheet,但核心参数已覆盖用户需求。

三、典型应用场景

IW673-20的设计特性使其适配以下主流场景:

  1. 小功率LED驱动:如LED灯泡、面板灯、台灯等恒流负载,满足低功耗、高效率要求;
  2. 小型开关电源:如5V/1A适配器、USB充电器等中小功率电源,符合能效等级(如六级能效);
  3. 低功耗电源模块:如智能家居设备、物联网终端的辅助电源,降低待机功耗延长续航。

四、封装与引脚配置

IW673-20采用SOT-23-6贴片封装,尺寸紧凑(典型尺寸:2.9×1.6×1.0mm),适合高密度电路设计。引脚功能包含核心控制与驱动:

  • 电源输入(VCC):提供控制器工作电压;
  • 接地(GND):参考地;
  • 同步整流驱动(SR_DRIVE):输出驱动信号至外部MOSFET(替代整流二极管);
  • 反馈检测(FB):接收输出电压/电流反馈信号,实现环路控制;
  • 使能控制(EN):开关控制器工作状态;
  • 辅助功能引脚:用于频率调整或保护功能(具体需参考官方资料)。

五、核心优势总结

IW673-20在同类产品中具备以下突出优势:

  1. 效率与功耗平衡:同步整流+数字绿模,兼顾满载高效率与轻载低待机;
  2. 恒流稳定性:内置恒流环路,无需外部复杂电路即可实现精准电流输出;
  3. 小型化设计:SOT-23-6封装,适配小体积产品(如LED灯泡、微型适配器);
  4. 可靠性:瑞萨电子的工业级设计,支持宽温度范围(通常-40℃~85℃),适合复杂环境;
  5. EMI优化:DCM模式结合数字控制,降低开关噪声,简化EMI滤波设计。

以上为IW673-20的核心产品概述,具体设计需结合瑞萨官方 datasheet 与应用场景进行电路优化。

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