SY8825 is an IC specially designed for TWS charging cradle. The device is integrated with a charger and a boost inside. The charging current can be adjusted externally. The boost dischargermodule integrates two load switches for output current limiting protection. Load in detection, load existing detection, and load current detection are also available.
SY8825 supports discharge control through an enable signal EN, so the MCU can control the discharge function of the IC directly through EN.
SY8825 integrates a single-wire state code output, which is convenient for the IC to report the IC state to the MCU. SY8825 simplifies the peripheral design circuits and components, providing a simple and easy-to-use solution for TWS chargingcradle.
Standby current in AUTO RECOGNITION state: 5uA
Standby current in constant output state: 2.5uA
Charge current is set by external resistor
Charge current up to 1A
Charging current temperature adjustment function, the charging current automatically decreases with the increase of temperature
Charge termination current: C/10, automatically recharge
Terminated charge voltage: 4.2V/4.35V, the accuracy reaches 1%
Over voltage protection is integrated
Synchronous boost output is 5.05V with high efficiency up to 93%@0.1A
Load in detection
Support load current detection. Detection for light load current : 4.5mA
Load current two-level overcurrent protection
Thermal regulation for boost output
Overcurrent protection, short circuit protection, overvoltage protection, and over temperature protection are integrated for discharge module
Enable control and state control
State code output
ESSOP-10 package
Charging cradle of TWS headset
Portable lithium battery application
Other low-power device application
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SY8825