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
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
Floating voltage is 4.2V，4.35V and 4.4V. The accuracy is ±1%
Input OVP protection and NTC protection is available
Switch frequency for discharger 1MHz
Load insertion identification
shut down current detect, shut down current is set by external resistor
temperature management technology for boost
Over-current protection (OCP), over voltage protection(OVP),over temperature protection (OTP) and short circuit protection (SCP) are integrated for discharger
1-4 LEDs
Start/stop of discharge by clicking or long pressing KEY (optional)
Connected directly to Hall sensors，support automatic charging and Re-connection when closing and opening the box respectively (optional)
IEC62368
Bluetooth earbuds charging cases
Mailbox:sales@tkplusemi.com
Website:bj-wyh.cn
Address:19th Floor, Caixun Science and Technology Building, No. 3176, Keyuan South Road, Nanshan District, Shenzhen
SY8802