Linear charger with 0.4A charging current

Charging in three stages: trickle current mode, constant current mode and constant voltage mode

Adjustable charging current based on temperature

40mA charge cut-off current, automatic recharge

Preset 4.2V floating charge voltage with ±1% accuracy

5.1V synchronous boost output, 1MHz switch frequency for discharger

92% discharging efficiency, 10mA discharge cut-off current

Original temperature management technology for boost

Over-current, short-circuit, over-voltage and over-temperature protections of discharging module

KEY function and LED indication, customizable version and function:

• SY7636_2L: Boost constant output; click KEY to display the battery status (if not required, the KEY pin must be NULL); LED automatic off at low load; 2 LEDs for charge/discharge indication.

• SY7636_KEY2L: Click KEY to display the battery status and turn on/off the boost, automatic shutdown (VOUT down to 0V); 2 LEDs for charge/discharge indication.

• SY7636_4L: Boost constant output; click KEY to display the battery status (if not required, the KEY pin must be NULL); LED automatic off at low load; 4 LEDs for charge/discharge indication.

• SY7636_KEY4L: Click KEY to display the battery status and turn on/off the boost, automatic shutdown (VOUT down to 0V); 4 LEDs for charge/discharge indication.