- Power Management

General Description

SY8802 is specifically designed for Bluetooth earbuds charging case. It is integrated with charger and discharger inside, the charging current and discharging cut-off current can be set externally. SY8802 also have load insertion identification and automatic shutdown at light load.1 to 4 LEDs driver for battery status indication.
SY8802 has two versions: SY8802_KEY and SY8802_HALL.The SY8802_KEY has integrated KEY function that allows for start/stop of discharge by clicking or long press. The SY8802_HALL can be connected directly to Hall sensors and realized automatic charging and Re-connection when closing and opening the box, respectively.
SY8802 can realize a solution for Bluetooth earbud case with few instruments outside. SY8802 package is QFN16-4mm*4mm

Features

Low standby current: 5uA

Charging current is set by external resistor, and constant VIN current

1.0 A maximum charging current

input absolute maximum voltage 28V

High efficiency up to 93% @0.5A

Switch frequency for charger1MHz

Dynamic Power-Path Management for charger, discharge first

Support charging the charge cradle and earbuds at the same time

Dynamic Temperature Management for charger

Auto charge end and recharge

Floating voltage is 4.2V，4.35V and 4.4V. The accuracy is ±1%