WMSIC Electronic Components

TWGMC HT7550 LDO Regulator HT7550

ModelHT7550
PackageSOT-23
BrandTWGMC
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
TWGMC HT7550
Type
TWGMC
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
100mV@(1mA)
Electronic Component
TWGMC
Electronic Component
HT7550
Electronic Component
1
Package
SOT-23
Electronic Component
Linear Regulator(LDO)
Electronic Component
0.03g
Electronic Component
1
Electronic Component
BM0266030378
Operating Temperature
40℃~+85℃@(Ta)
Operating Voltage
28V
Output
Electronic Component
Output Voltage
5V
Output Current
150mA
Output Type
Electronic Component

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

HT7550 产品概述

一、主要规格概览

  • 输出类型:固定(正极)
  • 输出电压:5.0 V
  • 最大输入电压/工作电压:28 V(器件耐受范围,请以数据手册最终值为准)
  • 输出通道:1 路
  • 输出电流:150 mA(最大)
  • 压差(Dropout):100 mV @ 1 mA(在轻载时表现出低压差特性)
  • 静态电流(Iq):2.5 μA(极低静态电流,适合电池供电)
  • 工作温度:-40 ℃ ~ +85 ℃(Ta)
  • 封装:SOT-23
  • 品牌:TWGMC(台湾迪嘉)

二、主要特性与产品定位

HT7550 为单通道固定输出 5V 线性稳压器,突出特点是极低静态电流与在轻载条件下很小的压差。低静态电流(2.5 μA)使其在待机或间歇工作场景下极为节能;SOT-23 小封装便于体积受限的便携设备布局。适用于对噪声要求不高但对静态功耗敏感的传感器节点、低功耗模块和备用电源方案。

三、典型应用场景

  • 低功耗电池供电设备(传感器节点、手持终端、遥测模块)
  • 工业与仪表的分立稳压电源(需 5V 逻辑或模拟参考电源的场合)
  • IoT 节点、无线模块电源(当负载电流 <150 mA 且需要低静态电流时)
  • 作为总线或系统的本地线性调整器(在输入电压与输出电压差较小时)

四、设计与使用注意事项

  • 功率耗散:若输入电压远高于 5V,线性稳压器的功耗 Pd = (Vin − 5V) × Iout 可能很大。举例:Vin=28V、Iout=150mA 时 Pd≈3.45W,SOT-23 无法有效散热,应避免在该条件下长时间工作或采用开关预稳压/降压方案。
  • 压差说明:给出的 100 mV@1 mA 为轻载条件下的压差指标;在接近最大输出电流时压差通常上升,应参考数据手册中不同负载点的压差曲线。
  • 输出电容与稳定性:多数 LDO 需外接输出电容以保证稳定性与瞬态响应。建议采用低 ESR 的陶瓷电容(如 1 μF~10 μF)并靠近输出脚布局;输入侧加 0.1 μF~1 μF 去耦。最终电容值与 ESR 要求请以厂方数据手册为准。
  • 布局建议:输入/输出走短且宽的走线,输出电容尽量靠近器件;若工作在高 Vin 或高 Iout 情况下,应考虑散热铜箔面积或改用封装及器件等级更高的方案。
  • 保护功能:部分同类器件带短路保护、过温保护等,请在选型时查阅官方手册确认具体保护特性。

五、封装与可靠性提示

SOT-23 小封装有利于体积优化,但热阻较大,热耗散能力有限。工作环境靠近 +85 ℃ 时应考虑额外热裕量与工作电流限制。器件经过 -40 ~ +85 ℃ 工作温度范围验证,适合多数工业级与消费级应用。

六、选型建议

选择 HT7550 当且仅当:系统要求固定 5V 输出、最大负载不超过 150 mA、极低静态电流对电池寿命至关重要、且输入与输出电压差通常较小(以减小功耗)。若系统常在高 Vin 或高功耗场景运行,优先考虑开关降压或更高散热能力的线性稳压器。

如需最终电气特性、引脚定义、典型应用电路及准确的热性能,请下载 TWGMC 官方数据手册或联系供应商获取技术支持。

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