WMSIC Electronic Components

HGSEMI LM2937IMP-5.0/TR LM2937IMP

ModelLM2937IMP-5.0/TR
PackageSOT-223
BrandHGSEMI
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 Electronic Component

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
HGSEMI LM2937IMP-5.0 / TR
Type
HGSEMI
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
500mV
Electronic Component
HGSEMI
Electronic Component
150uVrms
Electronic Component
LM2937IMP-5.0/TR
Electronic Component
1
Package
SOT-223
Electronic Component
Linear Regulator(LDO)
Electronic Component
0.298g
Electronic Component
1
Features
Voltage
Electronic Component
BM0230261085
Operating Temperature
40℃~+125℃@(Tj)
Operating Voltage
26V
Output
Electronic Component
Output Voltage
5V

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

LM2937IMP-5.0/TR 产品概述

一、产品简介

LM2937IMP-5.0/TR 是华冠(HGSEMI)推出的一款固定输出 5V 线性稳压器,属于低压差(LDO)稳压器类别。该器件支持最高工作电压 26V,输出电流可达 400mA,适用于对稳定 5V 电源有中等功率与噪声要求的嵌入式与工业应用。器件采用 SOT-223 封装,便于在空间受限且需一定散热能力的电路中使用。

二、主要性能特点

  • 输出类型:固定 5.0V 正极输出,单通道;
  • 最大工作电压:26V;最大输出电流:400mA;
  • 压差(Dropout):约 500mV(在额定电流附近);
  • 静态电流(Iq):10mA,适合功耗与响应性的折中;
  • 噪声:约 150μVrms,满足对噪声有一定要求的模拟/数字混合电路;
  • 保护功能:集成过流保护,提升系统可靠性;
  • 工作温度范围:-40℃ ~ +125℃(结温,Tj);
  • 封装:SOT-223,利于散热与焊接可靠性。

三、封装与热设计

SOT-223 封装相比小型封装具有更好的散热路径,但在 400mA 负载下仍需注意印制板散热。建议在 PCB 侧采用较大铜箔区域或散热金属垫,并保持输入/输出引脚周围的良好热传导,以确保在高环境温度条件下维持可靠工作。

四、典型应用场景

  • 汽车与车载电子(符合宽温范围和较高输入电压);
  • 工业控制与测量仪器;
  • 嵌入式系统与单板计算机的 5V 供电;
  • 通信设备、消费类电子中需要稳压且具过流保护的电源模块。

五、使用与布局建议

为保证稳压器稳定性与低噪声输出,建议在输入端和输出端靠近器件焊盘位置放置适当的滤波/旁路电容(如低 ESR 的陶瓷或钽电容),并保证良好接地回流路径。长电源线或高感性负载可能需要额外的输出滤波与瞬态抑制。合理评估功耗与结温(Pd = (Vin - Vout) × Iout),必要时扩展 PCB 散热面积或选择更高散热能力的封装。

六、可靠性与保护特性

LM2937IMP-5.0/TR 内置过流保护,可在输出短路或过载时限制电流,保护器件与负载。工作温度范围宽,适合恶劣环境长期运行。对系统设计者而言,需结合实际电流与散热条件做热仿真与可靠性评估,以延长使用寿命并保证稳定性。

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