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