• Integrated Synchronous Buck and Reverse Blocking FET with 16V Rating
• Adaptive  Input Power Limit for 4-14V Wide Input Voltage
• Maximum 2.5A Programmable Charge Current
• 4.2V and 4.35V Constant Voltage Selectable
• +/-0.5% Cell Voltage Accuracy
• Support Single-cell or Two-cell Battery Pack
• External Shutdown Function
• Input Voltage UVLO and OVP
• Thermal Fold-back Protection
• Over Temperature Protection
• Battery Short  Protection
• Programmable Charge Timeout
• Charge Status Indication
• Low Profile QFN3×3 Package for Portable Applications

The SY20741 is a multi-cell Li-Ion battery step-down charger designed for a 4-14V input range, capable of delivering a charge current of up to 2.5A. The charge current can be adjusted using an external resistor, offering flexibility for various portable applications.

The charger features programmable charge timeout and adaptive input power limit functions, enhancing the safety of battery charging operations. The device includes 16V rated power switching and reverse blocking MOSFETs with extremely low ON resistance, ensuring high charge efficiency and simple peripheral circuit design.

Short-circuit, Charge Timeout and temperature protection are provided for reliable operation.

The open-drain STAT output can be used to indicate the battery state of charge.

The SY20741 is available in a compact QFN3×3 package.