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 (3 V) operation

• Built-in following functions and circuits;

- CR oscillator for internal logic

- Initialization timer and safety timer for ∆V 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.