Products - Step-Down

500mA HiSAT-COT Synchronous Step-Down Micro DC/DC Converter

• XCL241 PWM only
• XCL242 PWM/PFM (Auto Switching)

The XCL241/242 series is a high speed transient response 500mA synchronous step-down Micro DC/DC converter with integrated inductor which fits in an extremely small 2.5mm x 2.0mm x 1.0mm CL-2025-02 package.

The extremely fast load transient performance is as a result of a new HiSAT-COT (Constant On Time) control method, which, when compared to standard COT control, provides less fluctuation in oscillation frequency against load and input voltage.

The input voltage range is 2.5V to 5.5V and the output voltage range is 0.8V to 3.6V (accuracy ±2.0%). Switching frequency is 1.2MHz and the operating ambient temperature range is -40°C ~ 105°C.

With the built-in UVLO function, the driver transistor is forced OFF when the input voltage becomes 1.95V or lower.

Features:

• Input Voltage: 2.5V ~ 5.5V
• Output Voltage: 0.8V ~ 3.6V
• Output Current: 500mA
• Oscillator Frequency: 1.2MHz
• HiSAT-COT Control
• Built-in soft start circuit
• CL-2025-02 Package