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HM5011CS Datasheet(PDF) 1 Page - Shenzhen Huazhimei Semiconductor Co., Ltd

Part # HM5011CS
Description  High-performance, low-cost offline PWM control power switch
PDF  10 Pages
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Manufacturer  HMSEMI [Shenzhen Huazhimei Semiconductor Co., Ltd]
Direct Link  http://www.hmsemi.com/
Logo HMSEMI - Shenzhen Huazhimei Semiconductor Co., Ltd

HM5011CS Datasheet(HTML) 1 Page - Shenzhen Huazhimei Semiconductor Co., Ltd

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高性能、低成本离线式 PWM 控制功率开关
主要特点
● 集成 500V 高压 MOSFET 和高压启动电路
● 多模式控制、无异音工作
● 支持降压和升降压拓扑
● 默认12V 输出(FB 脚悬空)
● 待机功耗低于50mW
● 良好的线性调整率和负载调整率
● 集成软启动电路
● 内部保护功能:
● 过载保护 (OLP)
● 逐周期电流限制 (OCP)
● 输出过压保护 (OVP)
● VDD 过压、欠压和电压箝位保护
● 封装类型 SOP-8 与 DIP-8
典型应用
●
小家电电源
●
工业控制
产品描述
HM5011系列是一款高性能低成本PWM控制功率开关,适用于离线式小功率降
压型应用场合,外围电路简单、器件个数少。同时产品内置高耐压MOSFET可提高
系统浪涌耐受能力。
与传统的PWM控制器不同,HM5011内部无固定时钟驱动MOSFET,系统开关频
率随负载变化可实现自动调节。同时芯片采用了多模式PWM控制技术,有效简化
了外围电路设计,提升线性调整率和负载调整率并消除系统工作中的可闻噪音。
此外,芯片内部峰值电流检测阈值可跟随实际负载情况自动调节,可以有效降低
空载情况下的待机功耗。
HM5011集成有完备的带自恢复功能的保护功能:VDD欠压保护、逐周期电流
限制、输出过压保护、过热保护、过载保护和VDD过压保护等。


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