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HM9901 Datasheet(PDF) 1 Page - Shenzhen Huazhimei Semiconductor Co., Ltd |
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HM9901 Datasheet(HTML) 1 Page - Shenzhen Huazhimei Semiconductor Co., Ltd |
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1 / 11 page  One Cell Lithium-ion/Polymer Battery Protection IC GENERAL DESCRIPTION The HM9901 Series product is a high integration solution for lithium- ion/polymer battery protection. HM9901 contains advanced power MOSFET, high-accuracy voltage detection circuits and delay circuits. HM9901 is put into an SOP8 package and only one external component makes it an ideal solution in limited space of battery pack. HM9901 has all the protection functions required in the battery application including overcharging, overdischarging, overcurrent and load short circuiting protection etc. The accurate overcharging detection voltage ensures safe and full utilization charging. The low standby current drains little current from the cell while in storage. The device is not only targeted for digital cellular phones, but also for any other Li-Ion and Li-Poly battery-powered information appliances requiring long- term battery life. FEATURES · Protection of Charger Reverse Connection · Protection of Battery Cell Reverse Connection · Integrate Advanced Power MOSFET withEquivalent of 16.5mΩ RSS(ON) · SOP8 Package · Only One External Capacitor Required · Over-temperature Protection · Overcharge Current Protection · Two-step Overcurrent Detection: -Overdischarge Current -Load Short Circuiting · Charger Detection Function · 0V Battery Charging Function - Delay Times are generated inside · High-accuracy Voltage Detection · Low Current Consumption - Operation Mode:3.9μ A typ. - Power-down Mode: 2.2μ A typ. · RoHS Compliant and Lead (Pb) Free APPLICATIONS One-Cell Lithium-ion Battery Pack Lithium-Polymer Battery Pack Figure 1. Typical Application Circuit HM9901 |
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