SY8601 is single-lithium battery linear-charging IC with integrated high voltage input. The charging is disabled when input voltage is higher than the protection threshold of 6.5V input maxim voltage up to 28V, it can work well without over-voltage protect circuit.
The integrated reverse block protection circuit without external isolating diodes. NTC interface is provided for temperature detection of lithium battery.
The trickle charge voltage is preset to be 4.2V/4.35V, and the charging current and charging cut-off current can be set via an external resistor for more applications. For battery voltage below 2.6V, the battery is pre-charged at 20% of the constant current.
The PG and CH pin are open-drain which can drive LED. When the device is powered on and the working conditions are met, PPR is turned on. CHG is an end-of-charge indication, which is turned off when the charging current is lower than the preset charging cut-off current.
SY8601 is available in a DFN-2x3-8L package, and recommended to work within the temperature range of -40°C~+85°C.
Floating voltage is 4.2V/4.35V with ±1% accuracy
Charging current the range of 10mA~500mA, with ±10% accuracy
Charge cut-off current, with ±15% accuracy
Low cut-off current applications such as Bluetooth earbuds
Battery temperature detectionprotection
6.5V input over-voltage protection
28V input voltage, no need for input over-voltage protection circuit
Indication of power source and charging state
Automatic recharge
IEC62368
DFN-2x3-8L package
Wearable devices
Wireless Bluetooth earbuds
IOT equipment
Intelligent control equipment
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SY8601