SY5502 is a chip specially designed for wearables application, which provides a perfect solution of charging and power line communication. SY5502 is integrated with NVDC structure, a BUCK charger, a single signal line for data bidirectional Communication battery gauge, 12-bit SAR-ADC and I2C interface. The I2C interface is used for charging management and data communication.
For TWS,SY5502 also supports the auto-detection of earbuds In/out from cradle status.
VBAT standby current: 3uA
Ship-mode standby current: 400nA
Input withstanding voltage 16V
VIN OVP = 6.0V/6.8V
2mA~500mA register configurable constant charging current
VFLOAT 4.00V~4.10V register configurable ,step=25mV; 4.10V~4.50V register configurable,step=12.5mV. Accuracy±0.5%
ITC and ITERM: 1mA~40mA register configurable
Watchdog function，Watchdog timer 40S/80S/160S configurable
BUCK charging efficiency up to 93%Bidirectional communication with communication direction auto-switching or the communication controlled by MCU, up to 3Mbps
Powerline bidirectional communication: (1) support voltage mode bidirectional communication (2) support voltage mode receive and current mode send
Private control instructions integrated and support the master MCU to control SY5502 through VIN pin
Auto detection of earbuds In/out cradle status integrated
Support I2C , up to 400kbps
12bit SAR-ADC，with VIN, VBAT, NTC voltage, IBAT charging current and IVIN current data readable
Battery gauge integrated with accuracy of 5%
Package: CSP-2.0mmx2.0mm
TWS
wearables
IoT
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SY5502