■ General Description
The ML5245 is a protection IC for 5- to13-cell Li-ion rechargeable battery pack. It detects inpidual cell
overvoltage/undervoltage and pack overcurrent/over-temperature, and then automatically turns on or turns off
the external charge/discharge NMOS-FETs accordingly.
Also, the ML5245 has a cell voltage monitor function so that the inpidual cell voltage can be monitored by
an external microcontroller.
■ Features
• Number of connected cells : 10-cell / 13-cell
• Highly accurate overvoltage / undervoltege detection function
Overvoltage detection accuracy : ±15mV(25℃)
Undervoltage detection accuracy : ±50mV(25℃)
• Charge / discharge overcurrent detection function
Dischrage overcurrent detection accuracy : ±10mV(25℃)
Charge overcurrent detection accuracy : ±10mV(25℃)
• Short current detection function
Short current detection accuracy : ±15mV(25℃)
• Adjustable detection delay time for overvoltage / undervoltage / short current with external capacitor
• Temperature detection function : with external NTC(10kΩ, B=3435) and 4.7kΩ resistor.
Discharge inhibition temperature : 75℃ or higher
Charge inhibition temperature : 55℃ or higher, -5℃ or lower
• Cell voltage monitor function : Cell voltage multiplied by 0.5 is outputted from VMON pin
• FET overheat protection function : stop large charge/discharge current through FET body-diode and
protect this IC from overheat.
• Number of connected cells, each detection voltage, each detectin delay time is selected with mask-option
(Code number)
• Low power consumption
Normal state : 25μA(typ), 60μA(max)
Power down state : 0.1μA(typ),1μA(max)
• Supply voltage : +7V to +80V
• Operating temperature : -40℃ to +85℃
• Package : 30pin SSOP