SY20783QIC - High Efficiency, 2-4 cells Buck Li-Ion Battery Charger


  • Wide Input Voltage Range: 4V to 28V
  • Constant Voltage Selectable:  4.1V/4.2V/4.35V per Cell
  • Charge Current up to 2A for 2 Cells Battery
  • Charge Current up to 1.6A for 3 Cells Battery
  • Charge Current up to 1.5A for 4 Cells Battery
  • Programmable VDPM
  • Programmable Input Current Limit
  • Programmable Charge Timer
  • Trickle Current / Constant Current / Constant Voltage Charge Mode
  • Thermal Regulation
  • Input Voltage UVLO and OVP Protection
  • BAT OVP and Short Protection
  • Over Temperature Protection
  • Charge Status Indication
  • NTC JEITA Compliance
  • Package QFN3x3-18

Typical Application


SY20783 is a wide input, high integrated and high efficiency Buck mode battery charger. It accepts 4-28V input and supports 2-4 cells Li-ion and Li-polymer battery. The charge current up to 2A can be programmed by using the external resistor for different portable applications. It also has a programmable charge timer and adaptive input power limit for safety battery charge operation. It consists of 30V rating reverse blocking FET and power switching FETs with low ON resistance to achieve high charge efficiency and simple peripheral circuit design.
SY20783 along with small QFN3x3-18 footprint provides small PCB area application.


  • Floor Cleaning Robot
  • Window & Door Automation
  • Smart Speaker
  • Electrical Tools