Overview

The LC05111CMT is a protection IC for 1?cell lithium?ion secondary batteries with integrated power MOSFET. Also it integrates highly accurate detection circuits and detection delay circuits to prevent batteries from over?charging, over?discharging, over?current discharging and over?current charging.

A battery protection system can be made by only LC05111CMT and few external parts.

特性 Features

? Charge?and?discharge Power MOSFET are Integrated at Ta = 25°C, VCC = 4.5 V

? ON Resistance (total of charge and discharge) 11.2 mΩ (typ)

? Highly Accurate Detection Voltage/Current at Ta = 25°C, VCC = 3.7 V

? Over?charge Detection ±25 mV

? Over?discharge Detection ±50 mV

? Charge Over?current Detection ±0.7 A

? Discharge Over?current Detection ±0.7 A

? Delay Time for Detection and Release (fixed internally)

? Discharge/Charge Over?current Detection is Compensated for Temperature Dependency of Power FET

? 0 V Battery Charging : “Permission”

? Auto Wake?up Function Battery Charging: “Permission”

? Over Charge Detection Voltage : 4.0 V to 4.5 V (5 mV steps)

? Over Charge Release Hysteresis : 0 V to 0.3 V (100 mV steps)

? Over Discharge Detection Voltage : 2.2 V to 2.7 V (50 mV steps)

? Over Discharge Release Hysteresis at Auto Wake?up : 0 V to 0.6 V (200 mV steps)

? Over Discharge Release Hysteresis : 0 V to 0.075 V (25 mV steps)

? Discharge Over Current Detection : 2.0 A to 8.0 A (0.5 A steps)

? Charge Over Current Detection : ?8.0 A to ?2.0 A (0.5 A steps)

Typical Applications

? Lithium Ion Battery Protection