GENERAL DESCRIPTION

The M62240FP is a general purpose battery charger control IC. It can control all of the sequence needed for battery charging, it also has functions such as detection of battery temperature, a protection against over-current/voltage, a safety timer and so on. Moreover, it can adapt to charge Ni-Cd, Ni-MH batteries by adding few peripheral components.

The IC has the feedback control of the charge current and output voltage.

FEATURES

• Low voltage (3V) operation

• Built-in following functions and circuits ;

• CR oscillator for internal logic

• Initialization timer and safety timer for DV error detection and

over-charging

• D-A converter and shift registers to maintain the peak voltage

of battery.

• Main output SW driving circuits

• LED driving circuit for displaying the status of the charging

• System reset circuit for detecting the power supply voltage

• Temperature detection circuit for the Ni-MH battery

• Voltage and current control circuits for feedback to the primary

side of the SMPS.

• Protective functions including detection of over-voltage in

charge mode and over-current in adapter mode and so on

APPLICATION

Battery charger for video cameras and handheld

telephones, etc.