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Siproin H8118A45PR
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Siproin H8118A45PR
- Type
- SIPROIN
- Minimum package
- 1000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- SIPROIN
- Electronic Component
- H8118A45PR
- Electronic Component
- 1
- Package
- SOT-89
- Electronic Component
- DC-DC Power Supply IC
- Electronic Component
- 0.092g
- Electronic Component
- 1
- Features
- Electronic Component
- Type
- Electronic Component
- Synchronous
- Electronic Component
- Electronic Component
- BM0265820265
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 2.1V~5.5V
- Switching Frequency
- 300kHz
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
H8118A45PR DC-DC升压电源芯片产品概述
H8118A45PR是上海矽朋电子（Siproin）推出的高集成度同步升压型DC-DC电源芯片，针对电池供电、低功耗、宽温工作的电子设备设计，具备小封装、低静态电流、高转换效率等核心优势，可满足便携式、物联网及工业级场景的电源转换需求。
一、产品定位与核心价值
该芯片聚焦单节锂电池/干电池供电系统的升压需求，核心价值体现在：
- 延长电池续航：低至15μA的静态电流，待机功耗极低；
- 简化系统设计：内置同步整流管与开关管，仅需少量外围元件；
- 宽温可靠运行：覆盖-40℃~+85℃工业级温度范围；
- 小体积集成：SOT-89-3封装，适合空间受限的便携设备。
二、关键参数深度解析
H8118A45PR的核心参数匹配低功耗升压场景，关键指标及应用意义如下：
参数项 规格值 应用意义 输入电压范围 2.1V~5.5V 兼容单节锂电池（2.1V放电截止→5.5V充满）、2节干电池（3V）等常见电源 输出电压 4.5V（可调） 典型值适配多数5V系统的升压需求，可通过外部电阻微调输出电压（3V~5.5V） 开关频率 300kHz 平衡效率与外围元件体积，电感可选10μH小封装，电容选用陶瓷电容 静态电流（Iq） 15μA 待机时芯片自身功耗极低，1000mAh电池待机超1年（典型场景） 同步整流 内置 比异步整流效率提升10%~15%，轻载时效率仍达85%以上 工作温度范围 -40℃~+85℃ 满足工业级设备（户外传感器）、消费级便携设备的宽温需求 封装类型 SOT-89-3 3引脚设计，PCB布局简单，节省板级空间三、核心设计特性
1. 低静态电流优化
采用脉冲频率调制（PFM）控制模式，轻载时自动切换至低功耗模式，静态电流仅15μA（远低于同类异步整流芯片的50μA以上），有效解决电池供电设备的待机功耗痛点。
2. 同步整流架构
内置N-MOS与P-MOS同步开关管，替代传统异步整流的续流二极管，减少导通损耗，满载时转换效率可达90%以上，尤其适合对效率敏感的便携设备。
3. 内置保护功能
集成过流保护（OCP）、过温保护（OTP）：输出过载时自动限流，芯片温度超150℃时关断，避免损坏；同时具备软启动功能，减少上电冲击。
4. 灵活输出可调
支持外部电阻分压调整输出电压（范围3V~5.5V），默认配置为4.5V，可适配不同负载的电压需求，提升产品通用性。
四、典型应用场景
H8118A45PR的参数特性使其广泛适用于以下场景：
- 便携式电子设备：智能手环、蓝牙耳机、便携音箱、电子书阅读器（单节锂电升压至4.5V/5V）；
- 物联网（IoT）终端：低功耗传感器节点、智能门锁、环境监测设备（宽温、低待机功耗）；
- 工业辅助电源：小型工业控制器、户外传感器模块（-40℃~+85℃宽温需求）；
- 消费类电子配件：充电宝升压模块、无线充电器辅助电源（小封装、高集成）。
五、应用便捷性与可靠性
- 外围元件极简：仅需1个10μH电感、2个10μF陶瓷电容（输入/输出）、1个分压电阻（可选），无需复杂电路设计；
- 宽温可靠性：经过-40℃~+85℃全温区测试，满足工业级设备长期稳定运行；
- 小封装适配：SOT-89-3封装尺寸仅2.9mm×2.5mm，适合高密度PCB布局，降低系统体积。
综上，H8118A45PR是一款针对电池供电场景优化的高性价比升压芯片，平衡了低功耗、高集成度与宽温可靠性，可快速适配多种便携式及工业级设备的电源设计需求。
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