SY20717BFAC - 1.5A Single Cell High Efficiency Switching Charger


  • 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 (1.5A 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

Typical Application


The SY20717B is a 4.0-16V input, 1.5A 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.


  • Cellular Telephones
  • PDA, MP3 Players, MP4 Players
  • Digital Cameras
  • Bluetooth Applications
  • PSP Game Players, NDS Game Players