XYT4256 is a dual series lithium battery synchronous boost charging chip with high integration and high reliability.

    XYT4256 can be configured with external resistance charging current, the charging system integrates 3 loops: input voltage, output voltage and output current, providing excellent performance for the charging system. The charging efficiency is 94% when the input voltage is 5V, the BAT voltage is 8.4V, and the charging current is 1.2A. Charging integrates various protection functions: input overvoltage, input undervoltage, output overvoltage, output short circuit, chip overtemperature, and a maximum charging time of 24 hours.

Input voltage operating range 4.6V~5.5V

5V/2A input synchronous boost charging

External resistors regulate the charging current

Input adaptive charging

Support 4.2V, 4.35V battery (4.35V battery needs to be customized)

LED display charging status, support two-color light display

Trickle/constant current/constant voltage charging

Charging 24 hours timeout protection

Output over current, over voltage, short circuit protection

Input overvoltage and undervoltage protection

Input voltage 13V

OTP overtemperature protection

4KV ESD characteristics

Package format: ESOP8