DESCRIPTION

The A4002 series product is a high integration solution for lithium-ion/polymer battery protection. A4002 contains advanced power MOSFET, high-accuracy voltage detection circuits and delay circuits. A4002 is put into a small package and only one external component makes it an ideal solution in limited space of battery pack. A4002 has all the protection functions required in the battery application including overcharging, over-discharging, overcurrent and load short circuiting protection etc. The accurate safe and full utilization charging. The low standby current drains little current from the cell while in storage. The device is only targeted for digital cellular phones, but also for any other Li-ion and Li-Poly battery-powered information appliance requiring long-term battery life.

The A4002 is available in SOT-23S and SOT-25 packages.

FEATURES

? Protection of Battery Cell Reverse Connection

? Integrate MOSFET

? Over-temperature Protection

? Two-step Overcurrent Detection:

Over-discharge Current

Load Short Circuiting

? Charger Detection Function

? 0V Battery Charging Function

? High-accuracy Voltage Detection

? Low Current Consumption

? Operation Mode: 4uA typ

? Power-down Mode: 2.0uA typ

? Available in SOT-23S and SOT-25 Packages

APPLICATION

? One-Cell Lithium-ion Battery Pack

? Lithium-Polymer Battery Pack