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H8118A50M5R是上海矽朋(Siproin)推出的超小封装同步升压DC-DC电源芯片,专为低输入电压场景下的固定5V输出需求设计。其核心价值在于:在SOT-23-5超小封装内集成同步整流电路与功率开关管,兼顾高效率、宽输入范围、宽温可靠性,同时大幅简化外围电路,是便携电子、小型传感器节点等场景的理想电源解决方案。
采用同步整流拓扑(内置同步整流管),相比异步整流(外接肖特基二极管),可将转换效率提升至90%以上(典型负载100mA~500mA),减少功耗与发热;内置主开关管+同步整流管,无需外接功率器件,进一步缩小系统体积。
固定300kHz开关频率,处于常规开关电源的“低EMI区间”,配合合理PCB布局可有效抑制电磁干扰;同时无需使用极小值电感(避免电感饱和问题),降低BOM成本。
工作温度范围为**-40℃~+85℃,满足工业级环境与消费电子的宽温需求(如户外传感器、车载小设备、低温地区便携产品);芯片内部集成过温保护(OTP)**,温度过高时自动关断,保障长期稳定运行。
采用SOT-23-5超小封装(尺寸约2.9mm×2.5mm×1.1mm),节省PCB空间(比常见SOT-23-6封装更小);引脚功能清晰(VIN、GND、EN、SW、VOUT),外围仅需电感、输入输出电容即可工作。
H8118A50M5R的参数特性使其适配以下场景:
因内置核心功率器件,外围电路仅需3类元件,设计极简:
H8118A50M5R作为一款高集成度同步升压芯片,以SOT-23-5超小封装实现了宽输入范围、高效率、宽温可靠的性能,外围电路极简,是便携电子、小型传感器等场景的高性价比电源解决方案。上海矽朋的工业级设计保证了其在恶劣环境下的稳定运行,适配多种低电压输入场景的5V输出需求,有效降低系统开发成本与体积。
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