SY8801 is a power and communication chip. The device is integrated with a charger and a boost inside. It is utilizing two signal lines (ground and power line) for data transmission. The device is also equipped with a standard I2C interface for data exchange with MCU, an interrupt output and a KEY PIN. Load in detect and load current detect are also available.
SY8801 is perfectly suited for True Wireless headset application thanks for these features. It can realize a smart charge cradle with few instruments outside.
SY8801 supports QFN24 4mmX4mm package.
Low quiescent current: 5uA
Charge current is set by external resistor
Charge current up to 1.2A
Input voltage withstand up to 28V
Switch charger with high efficiency up to
93%@0.5A
Switch frequency for charger: 1MHz
Dynamic Power-Path Management for charger
Support charging the charge cradle and earbuds at the same time
Dynamic Temperature Management for charger
Auto charge end and recharge
Terminated charge voltage: 4.2V0/4.35V/4.40V is available; The accuracy is 1%
Input OVP protection and NTC protection is available
Boost output is 5V with High efficiency up to 93%@0.1A
Switch frequency for boost: 1MHz
Support load in detect
Support shut down current detect, shut down current is set by external resistor
Support temperature management for boost
Over-current protection (OCP), over voltage protection (OVP), over temperature protection (OTP) and short circuit protection (SCP) are integrated for boost
1-4 LED display is available
Short pressing the KEY to enable the boost; Long pressing the KEY to disable the boost(optional version)
Standard I2C interface and Enable PIN (optional version)
Support two communication mode
Conform to the latest standard of CN48790 of IEC62368
Smart charge cradle
Mailbox:sales@tkplusemi.com
Website:bj-wyh.cn
Address:19th Floor, Caixun Science and Technology Building, No. 3176, Keyuan South Road, Nanshan District, Shenzhen
SY8801