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HM1521 Datasheet(PDF) 1 Page - Shenzhen Huazhimei Semiconductor Co., Ltd

Part # HM1521
Description  USB dedicated charging port controller
PDF  11 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

HM1521 Datasheet(HTML) 1 Page - Shenzhen Huazhimei Semiconductor Co., Ltd

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1521
USB 专用充电端口控制器
第
1页
概述:
是一款
USB 专用充电端口控制器,可应用在车载充电器、带有
USB 端口的 AC-DC 电源适配器和其它的 USB 充电设备。
具有自动
检测的特性,它通过监测
D+和 D-上电压的变化,会适时地在 DP 和 DM
上加载正确的可识别信号,从而实现与之连接的可兼容便携设备的快速充
电功能。支持的便携设备包括智能手机、
5V 充电的平板电脑和个人媒体
播放器。
支持以下五种最常用的充电协议:
分压
1 (在 D+和 D-线路上分别施加 2V 和 2.7V 电压)
分压
2 (在 D+和 D-线路上分别施加 2.7V 和 2V 电压)
BC1.2 协议,USB 电池充电技术规格 1.2 修订版
中国电信行业标准
YD/T 1591-2009
在
D+和 D-上均施加 1.2V 电压
主要特点:
依照
USB电池充电技术规格,修订版本1.2(BC1.2),支持USB DCP D+短接至D-
依照中国电信行业标准
YD/T 1591-2009,支持短接模式(支持D+短接至D-)
支持在
D+上施加2.7V电压,在D-上施加2V电压的USB专用充电协议,或者是在D+线路上施加2V电压,
在
D-线路上施加2.7V电压的USB专用充电协议
支持在
D+和D-线路上施加1.2V电压的USB专用充电协议
自动为连接的器件切换
D+和D-线路连接
工作电压范围
4.5V至5.5V
应用:
车载
USB充电器
带有
USB端口的AC- DC适配器
其它
USB充电器
SOT-23-6


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