• Wide Input Voltage Range: 4.0V to 23V
• High Efficiency Int. Synchronous Buck Regulator with Fixed 800kHz Switching Frequency
• Trickle Current / Constant Current / Constant Voltage Charge Mode
• Adaptive input current limit
• Programmable Charging Timeout
• 4.35 and 4.2V selectable cell voltage
• Programmable (2A MAX) Constant Charge Current
• External Shutdown Function
• Input Voltage UVLO and Battery OVP
• Over Temperature Protection
• Output Short Circuit Protection
• Charge Status Indication
• Normal Synchronous Buck Operation when Battery Removed
• Compact package QFN4×4-16

SY20752A is a 4.0-23V input, 2A single-cell synchronous buck Li-Ion battery charger. The compact package QFN4×4-16 is widely suitable for portable application. Select pin is convenient for different cell voltage. It allows the output power path management and input reverse blocking. Integrated 800 kHz synchronous Buck regulator consists of 23V rating FETs with extremely low ON resistance to achieve high charge efficiency and simple peripheral circuit design.