SY2A67932QIA

Ÿ  Wide Input Voltage Range: 4.5V~36V

Ÿ  400mA Linear Charger

§ Supports 1-cell or 2-cell Li-ion and Li-polymer Batteries

§ Supports 4.05V, 4.1V and 4.2V Cell Voltage Batteries

§ ±0.5% Battery Charge Voltage Regulation Accuracy

§ Programmable Constant Charge Current and Termination Current

§ 100mA~400mA Constant Charge Current with ±10% Accuracy

§ 20mA~100mA Termination Current with ±20% Accuracy

§ Thermal Regulation

Ÿ  Integrated 500mA Linear Regulator with Overload and Short-Circuit Protection

Ÿ  Thermal Shutdown Function

Ÿ  RoHS Compliant and Halogen Free

Ÿ  Compact Package: QFN4×4-16

Ÿ  AEC-Q100 Grade1 Qualified

The SY2A67932 integrates a linear charger for 1-cell or 2-cell Li-ion and Li-polymer batteries with a wide input operation voltage range of 4.5V~36V. It supports 4.05V, 4.1V, and 4.2V cell voltage batteries. The linear charger has high accuracy trickle charge current, constant charge current, constant charge voltage regulation loops, charge termination, and auto-recharge functions. The constant charging current is programmable up to 400mA using an external resistor. The device also integrates a thermal regulation loop, battery overvoltage protection, and battery temperature monitoring functions. Additionally, an open-drain output can provide charge status indication when connected to a LED.

The SY2A67932 also integrates a linear regulator that supplies power to the system with a wide input operation voltage range of 4.5V~36V. The output voltage of the linear regulator is programmed by an external resistor divider. The linear regulator can supply up to 500mA of load current. It has a high accuracy output voltage loop, overload protection, and short circuit protection.

 The SY2A67932 has thermal shutdown protections for both the linear charger and the linear regulator to prevent the device from overheating. The device is available in a compact QFN 4mm×4mm-16 pin package.