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.

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