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.