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.