Description

The NT1728 series is the 3-cell protection IC

for lithium-ion/ lithium-polymer/lithium-iron

phosphate rechargeable battery pack. The high

accuracy voltage, current detector and delay time

circuits are built in NT1728 series with

state-of-the-art design and process.

The NT1728 series have three types of

discharge over-current protection and one type of

charge over-current protection.

Features

 High accuracy voltage detection circuit

 Over-charge detection : 25mV

 Over-discharge detection : 80mV

 Discharge over-current-1 detection : 10

 Discharge over-current-2 detection : 10

 Load short-circuiting detection : 10

 Charge over-current detection : 8mV/10mV

 High withstand voltage

 Absolute maximum rating: 30V

 Operating voltage range: 3.5V to 18V

 Low power consumption

 Supply current: 6.6uA max. (Ta=+25℃)

 Delay times of over-charge, load short-circuiting are

generated by an internal circuit (fixed).

 Delay times of over-discharge, discharge over-current-1

and 2 are controlled by external capacitors.

 Built-in breaking wire detector function

 Package: 10 pin SOP

 Lead-free, Sn 100, Halogen-free

Applications

 Lithium-ion rechargeable battery pack

 Lithium-polymer rechargeable battery pack

 Lithium-iron phosphate rechargeable battery pack