Maxim Integrated Products is currently sampling the MAX77301 Li+ battery charger. It integrates the intelligence to enumerate with the host device, automatically identify the adapter type, and then determine the fastest rate to charge a battery. With advanced temperature monitoring, the MAX77301 modulates the charge current and battery regulation voltage automatically to maximize safety in any temperature environment.
The device performs these functions without an external CPU or system hardware. The MAX77301 is suitable for use with mobile equipment, such as cameras, Bluetooth headsets, MP3 players, and portable medical devices.
To enhance battery safety, battery makers often recommend charging “gently” in cold or hot ambient temperatures. This often necessitates use of a microcontroller to monitor and control the charger. The MAX77301 solves this charging problem by automatically setting charge parameters at a safe level. The device also provides full programmability via the I2C interface, increasing flexibility. Furthermore, it integrates an enumeration and adapter detection engine to maximize charge current. This safety feature and the adapter detection ensure the fastest and safest possible charging.