• Wide Input Voltage Range: 4.0V to 16V
• High Efficiency Synchronous Buck Regulator with Fixed 800kHz Switching Frequency
• Trickle Current/Constant Voltage Charge Mode
• Adaptive Input Current Limit
• Programmable Charging Timeout
• Programmable (1.2A MAX) Constant Charge Current
• Input Voltage UVLO and Battery OVP
• Over Temperature Protection
• Output Short Circuit Protection
• Charge Status Indication
• Normal Synchronous Buck Operation when Battery is Removed
• Compact Package SO8

The SY20717 is a 4.0-16V input, 1.2A single-cell synchronous Buck Li-Ion battery charger, suitable for portable application. The 800 kHz synchronous Buck regulator integrates 16V rating FETs with ultralow on-resistance to achieve high efficiency and simple circuit design.