Holtek continues its development of battery charger MCUs with this new Flash MCU release, the HT45F5Q-6. It is pin compatible with the predecessor device, the HT45F5Q-5, however this new device provides an operating frequency of up to 20MHz and increased internal ROM, RAM and EEPROM memory capacity. When used together with the charger volume production tools, customers have a means of rapid volume production thus reducing production line effort. This new device is suitable for use in lithium battery and lead acid battery chargers for electric motorcycles, power tools etc.

The device contains a 16K×16 Flash Program Memory, a 1024×8 Data Memory and 27 multi-function I/O ports. The multi-channel 12-bit A/D converter is used to measure voltage, temperature and other signals. There is also a group of OPAs with a gain of either 20 or 40, which allows lower values of current detection resistors to be used. This improves the conversion efficiency and increases the measured current accuracy.

The device supports various software self-detect features, which allows it to meet a range of safety requirements. There are also a fully integrated range of communication interfaces including I²C, SPI and UART. As for packaging, the HT45F5Q-6 is supplied in 24/28-pin SSOP and 32-pin QFN package types. When used together with the charger development platform, users are able to easily select the required charging voltage/current and other specifications. This development platform will also be able to generate MCU code which will contain generic lithium battery and lead acid battery charging programs, resulting in greatly reduced product development times.

Reference source: https://www.holtek.com/page/contentDetail?cYear=2024&cMonth=0&cType=productnews&cCode=c059005