WMSIC Electronic Components

HOLTEK HT7233

ModelHT7233
PackageSOT-23
BrandHOLTEK
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
HOLTEK(Holtek / Holtek) HT7233
Type
HOLTEK
Minimum package
3000 个

Technical parameters

Electronic Component
Electronic Component
Electronic Component
240mV@(300mA)
Electronic Component
HOLTEK(Holtek / Holtek)
Electronic Component
HT7233
Electronic Component
1
Package
SOT-23
Electronic Component
Linear Regulator(LDO)
Electronic Component
0.012g
Electronic Component
1
Electronic Component
BM0228787397
Operating Temperature
40℃~+85℃@(Ta)
Operating Voltage
8V
Output
Electronic Component
Output Voltage
3.3V
Output Current
300mA
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.

HT7233 产品概述

一、概述

HT7233 是 HOLTEK(台湾合泰/盛群)推出的一款固定输出线性稳压器(LDO),提供稳定的 3.3V 正极输出,适用于需低压差与低静态电流的便携与低功耗系统。器件输出电流可达 300mA,在满载时典型压差仅 300mV,适合对输入/输出电压裕量有限的场合。

二、主要特性

  • 固定输出:3.3V 正极输出,单路输出设计,便于直接为 MCU、传感器和外围器件供电。
  • 输出电流:最大 300mA,满足多数中小功耗终端需求。
  • 低压差:300mV@300mA,降低输入电压要求,延长电池工作时间。
  • 低静态电流:Iq ≈ 4μA,适合电池供电与待机节能场景。
  • 保护机制:内部具备过热保护与过流保护,提高系统可靠性。
  • 使能功能:带 EN(使能)引脚,可实现开/关控制与电源管理。
  • 工作温度:-40℃ ~ +85℃,满足工业级温度要求。
  • 封装:SOT-23,小体积适合空间受限的应用。

三、典型应用

  • 便携式设备与电池供电产品(手持仪器、可穿戴设备)。
  • 物联网终端、无线模块、低功耗 MCU 平台。
  • 传感器前端与模拟电路供电。
  • 电源管理模块、基准电源以及消费类电子产品。

四、使用要点与布局建议

  • 输入/输出去耦:建议在输入端与输出端各放置合适容量的旁路电容(常用陶瓷电容 1μF~10μF),并靠近引脚布置,以保证瞬态响应与稳定性。
  • ESR 要求:为保证环路稳定,请选择低 ESR 的陶瓷电容并参照样例电路验证稳定性。
  • 热耗散与降额:在高电流工况下,器件功耗 P = (Vin–3.3V)×Iout,SOT-23 封装散热有限,必要时应降低负载或改善 PCB 散热(大铜面积或散热通孔)。
  • 使能控制:利用 EN 引脚实现供电门控以降低系统待机功耗;上电时保证 EN 与相关控制信号的合理时序。

五、保护与可靠性

HT7233 集成过流与过热保护,可在短路或过载条件下限制输出并在安全温度恢复后自动复位,提高系统容错能力。实际设计中应结合外部保险与布线设计,避免长期过载导致器件温升过大。

六、封装与环境

SOT-23 小封装有利于降低占板面积,适配大批量消费电子与嵌入式产品。器件额定工作温度范围 -40℃~+85℃,可满足多数工业与商业等级应用。

七、选型建议

选择 HT7233 时,关注输入电压余量与功耗预算;若系统输入电压远高于 3.3V 并需长时间大电流工作,建议评估热管理或考虑带更好效率的降压方案。总体而言,HT7233 以其低压差、超低静态电流与使能功能,适合对空间、功耗与成本敏感的 3.3V 供电设计。

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