描述 Description

The NT1777 series are the 2/3/4/5-cell protection IC with temperature protection for lithium-ion/lithium-polymer/lithium-iron phosphate rechargeable battery pack. The high accuracy voltage, current detector and delay time circuits are built in NT1777 series with state-of-the-art design and process.The NT1777 series have three types of discharge over-current protection and one type of charge over-current protection.The NT1777 series have three types of over- temperature during charging, over-temperature during discharging and under-temperature during charging protection.

特性 Features

High accuracy voltage detection circuitOver-charge detection : ±25mVOver-discharge detection : ±80mVDischarge over-current-1 detection : ±10%Discharge over-current-2 detection : ±10%Load short-circuiting detection : ±10%Charge over-current detection : ±8mV/±10mVTemperature detection : ±4℃High withstand voltageAbsolute maximum rating: 30VOperating voltage range: 3.5V to 25VLow power consumptionSupply current: 6.6uA max. (Ta=+25℃)Delay times of over-charge, load short-circuiting, charge over-current and over/under temperature 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 functionPackage: 16 pin TSSOPLead-free, Sn 100%, Halogen-free

應(yīng)用 Application

Lithium-ion rechargeable battery packLithium-polymer rechargeable battery packLithium-iron phosphate rechargeable battery pack