XB5351锂电专用保护IC

XB5351是锂电专用保护IC,成本低,只要0.3～0.4元人民币之间,保护电流3A,充电保护电压4.2V,放电电压3V,外围电路只要一上电阻一个电容,可用在小容量的锂电池产品上,有效地降低成本减少线路空间。

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XB5351A

One Cell Lithium-ion/Polymer Battery Protection IC

GENERAL DESCRIPTION

The XB5351 series product is a high integration solution for lithium-ion/polymer battery protection. XB5351 contains advanced power MOSFET, high-accuracy voltage detection circuits and delay circuits. XB5351 is put into an ultra-small SOT23-5 package and only one external component makes it an ideal solution in limited space of battery pack.

XB5351 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 with Equivalent of 54m RDS(ON) · Ultra-small SOT23-5 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: 2.8μA typ. - Power-down Mode: 0.1μA max. · RoHS Compliant and Lead (Pb) Free

APPLICATIONS

One-Cell Lithium-ion Battery Pack Lithium-Polymer Battery

Pack

Figure 1. Typical Application Circuit

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