WMSIC Electronic Components

GR LM2596-3.3FW05ARHQ LM2596

ModelLM2596-3.3FW05ARHQ
PackageTO-263-5
BrandGR
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
GR LM2596-3.3FW05ARHQ
Type
TO-263-5
Minimum package
800 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
GR
Electronic Component
LM2596-3.3FW05ARHQ
Electronic Component
1
Package
TO-263-5
Electronic Component
DC-DC Power Supply IC
Electronic Component
1.58g
Electronic Component
1
Features
Electronic Component
Type
Electronic Component
Electronic Component
BM0264390968
Operating Temperature
40℃~+125℃
Operating Voltage
4.5V~40V
Switching Frequency
150kHz
Electronic Component
Electronic Component
Output Voltage
3.3V

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

LM2596-3.3FW05ARHQ 降压型DC-DC转换器产品概述

一、产品定位与核心应用场景

LM2596-3.3FW05ARHQ是国睿(GR)品牌推出的固定3.3V输出降压型DC-DC转换器,专为需要宽输入电压、稳定低压大电流供电的场景设计。其核心应用覆盖三大领域:

  • 工业控制:PLC模块、传感器节点、工业显示器的12V/24V转3.3V供电;
  • 车载电子:行车记录仪、车载显示屏、车机系统的9V~36V(车载电池波动)转3.3V稳压;
  • 消费电子/便携设备:路由器、机顶盒的12V输入转3.3V,3节锂电池(11.1V)驱动的便携式仪器供电。

二、关键电气性能参数解析

1. 输入输出兼容性

  • 输入电压范围:4.5V40V,可适配3节干电池(4.5V)、3节锂电池(11.1V)、12V/24V铅酸电池,甚至车载波动电压(9V36V),兼容性极强;
  • 输出特性:固定3.3V输出(内部集成反馈电阻,无需外部调整),最大输出电流3A,可满足高性能MCU、FPGA等低压大电流负载需求;
  • 开关频率:150kHz固定频率,处于中等区间——既避免低频电感体积过大,又减少高频EMI干扰,外围元件(电感、电容)选型更易。

2. 静态功耗与待机表现

静态电流(Iq)为5mA,在轻载工况下保持合理功耗,适合长期待机的设备(如车载电子低功耗模式),无需额外低功耗电路设计。

三、封装与物理特性

产品采用TO-263-5贴片封装,5引脚设计(典型引脚功能:VIN、GND、OUT、FB、ON/OFF),具备三大优势:

  • 体积紧凑:符合自动化贴装要求,节省PCB空间,适配小型化设备;
  • 散热优异:封装结构利于功率器件散热,额定工况下无需额外散热片,降低系统成本;
  • 安装便捷:贴片式设计兼容常规SMT产线,无需手工焊接,适合批量生产。

四、宽温范围与可靠性保障

LM2596-3.3FW05ARHQ的工作温度范围为-40℃~+125℃,覆盖工业级与车载级温度要求:

  • 低温场景:可适应北方户外工业设备、冬季车载电子的低温启动(-40℃下仍能稳定输出);
  • 高温场景:能长期工作于设备内部散热差区域(如工业控制柜、车载发动机舱,+125℃下无性能衰减);
  • 可靠性验证:宽温设计结合成熟Buck拓扑,降低极端环境下的失效风险,适合7×24小时连续运行的设备。

五、拓扑结构与工作原理

采用经典降压式(Buck)拓扑,核心原理为:

  1. 开关管导通时,输入电压给电感储能,同时给输出电容充电;
  2. 开关管截止时,电感通过续流二极管释放储能,维持输出电压稳定;
  3. 内部集成反馈电路,固定输出3.3V,外围仅需电感、电容、续流二极管等少数元件,电路设计极简。

六、产品核心优势总结

  1. 宽输入适配:4.5V~40V覆盖多类电源,减少系统兼容性设计成本;
  2. 固定输出简化设计:无需外部调整反馈电阻,电路复杂度降低30%以上;
  3. 宽温可靠:-40℃~+125℃满足工业、车载等恶劣环境需求;
  4. 散热与体积平衡:TO-263-5封装支持3A输出长期稳定,无需额外散热片;
  5. 元件选型友好:150kHz频率平衡体积与EMI,外围元件成本比高频方案低20%左右。

LM2596-3.3FW05ARHQ凭借宽电压、宽温、高可靠性等特点,成为工业、车载等领域低压供电的优选方案,尤其适合对成本敏感、设计周期短的项目。

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