Description
The NT1727 series is the 2-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 NT1727 series with
state-of-the-art design and process.
The NT1727 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 12V
 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