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Description

The NT1724 series are the 2-cell protection IC for

lithium-ion/lithium-polymer rechargeable battery

pack. The high accuracy voltage, current detector

and delay time circuit are built in NT1724 series

with state-of-art design and process.

To minimize power consumption, NT1724 series

activates power-down function when an

over-discharge event is detected (for

power-down function “available” version).

Besides, NT1724 series performs protection

functions with six external components for

miniaturized PCB.

Features

? High Accuracy

? Over-charge Detection : ?20mV

? Over-discharge Detection : ?50mV

? Discharge over-current Detection : ?10mV

? Charge over-current Detection : ?20mV

? Load short-circuiting Detection : ?20

? High withstand voltage

? Absolute Maximum Rating: 40V

? Operating voltage range: 2.5V to 10V

? Low power consumption:

? Supply current : 3.2uA typ. (Ta=+25℃)

? Power-down current: 0.1uA max. (Ta=+25℃)

? Delay times are generated by an internal circuit.

? Power-down function “available” / “unavailable” is

selectable.

? 0 V battery charging function “available” / “unavailable” is

selectable.

? Package: SOT-23-6

Applications

? Lithium-ion rechargeable battery pack

? Lithium-polymer rechargeable battery pack