WMSIC Electronic Components

GR LM2596-ADJFW05ARHQ LM2596

ModelLM2596-ADJFW05ARHQ
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-ADJFW05ARHQ
Type
GR
Minimum package
800 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
GR
Electronic Component
LM2596-ADJFW05ARHQ
Electronic Component
1
Package
TO-263-5
Electronic Component
DC-DC Power Supply IC
Electronic Component
1.56g
Electronic Component
1
Features
Electronic Component
Type
Electronic Component
Electronic Component
BM0264390969
Operating Temperature
40℃~+125℃
Operating Voltage
4.5V~40V
Switching Frequency
150kHz
Electronic Component
Electronic Component
Output Voltage
1.2V~37V

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

LM2596-ADJFW05ARHQ 降压型DC-DC转换器产品概述

一、核心功能与拓扑结构

LM2596-ADJFW05ARHQ是一款非隔离降压式(BUCK)DC-DC转换器,核心功能是将宽范围直流输入电压转换为稳定可调的直流输出电压,适用于中小功率直流电源转换场景。其采用经典降压拓扑结构,通过开关管的周期性通断,配合电感储能、电容滤波实现电压降压,具备效率高、结构简单的特点,可满足多数低电压输出的电源需求。

二、关键电气参数解析

该器件的核心参数覆盖了宽范围应用场景,具体解析如下:

  1. 输入电压范围:4.5V40V,覆盖常见低压直流电源(如5V适配器)、多节锂电池(3节10节锂电池,11.1V~37V)及部分工业/车载12V/24V系统,适配性强;
  2. 输出电压范围:1.2V37V(可调),不仅支持1.2V3.3V等低电压(如MCU/FPGA供电),也可实现接近输入电压的输出(如输入37V时输出35V),灵活满足不同负载电压需求;
  3. 输出电流能力:连续输出3A,支持中小功率负载(如小型电机、多LED串、嵌入式系统核心板等);
  4. 开关频率:150kHz,属于中等开关频率——既避免了高频(>500kHz)带来的EMI(电磁干扰)问题,又无需低频(<100kHz)所需的大体积电感/电容,平衡了体积与抗干扰性能;
  5. 工作温度范围:-40℃~+125℃,符合工业级温度标准,可适应极端环境(如户外设备、车载系统、工业控制柜等)。

三、封装形式与物理特性

LM2596-ADJFW05ARHQ采用TO-263-5贴片封装,具备以下特点:

  • 尺寸紧凑:适合表面贴装工艺,节省PCB空间,便于自动化生产;
  • 引脚配置:5引脚(通常含输入VIN、地GND、输出VOUT、反馈FB、使能EN),符合行业标准,易与同类器件替换;
  • 散热设计:封装底部设有散热焊盘,可通过PCB铜箔辅助散热,满足3A输出时的功率损耗需求(必要时可外接小型散热片增强散热)。

四、典型应用场景

结合参数特性,该器件适用于以下场景:

  1. 电池供电系统:3节10节锂电池(11.1V37V)转换为1.2V~37V可调输出,用于便携式储能设备、无人机飞控供电;
  2. 嵌入式系统:为MCU、FPGA、DSP等核心芯片提供稳定可调的工作电压(如1.8V、3.3V),适配不同芯片的电压需求;
  3. 工业控制:-40℃~+125℃宽温范围,可用于传感器供电、小型执行器驱动(如电磁阀、微型电机);
  4. 照明领域:可调输出适配不同LED串并联组合(如3串10并LED负载),3A输出满足多LED灯组的功率需求;
  5. 车载电子:覆盖12V/24V车载电源,宽温适应车载环境(如车载显示屏、行车记录仪供电)。

五、设计注意事项

为确保稳定工作,需关注以下要点:

  1. 电感选择:需匹配150kHz开关频率,建议使用低ESR功率电感(电感值通常10μH~22μH,具体需根据输入输出压差计算);
  2. 电容配置:输入电容选低ESR电解电容(如100μF/50V),输出电容选陶瓷电容(如22μF/35V),抑制纹波;
  3. 反馈电阻:可调输出通过FB引脚外接分压电阻(公式:VOUT=1.2V×(1+R2/R1),1.2V为内部参考电压),需选用精度±1%的电阻;
  4. 散热优化:3A输出时,需确保TO-263封装的散热焊盘与PCB铜箔充分焊接,若功率损耗较大(如输入40V输出12V,损耗约12W),需外接散热片;
  5. EMI控制:可在输入输出端增加共模电感或EMI滤波电容,降低开关噪声对周边电路的干扰。

六、品牌与可靠性说明

该器件由国内知名电源管理厂商国睿(GR) 出品,产品经过高低温循环、老化测试、ESD防护等可靠性验证,符合工业级标准,可满足长期稳定工作需求,适合对可靠性要求较高的商业及工业场景。

综上,LM2596-ADJFW05ARHQ凭借宽输入输出范围、3A输出能力、宽温工作及紧凑封装,成为中小功率降压电源的高性价比选择。

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