onsemi DC DC Switching Controllers FAN6520BM

The FAN6520BM is a single synchronous buck PWM controller designed for efficient DC-DC step-down conversion. It operates with an input voltage range of 1.5V to 5V and can regulate output voltages from 0.8V to the input voltage minus 0.8V, with a precision tolerance of ¬±1.5% across varying line voltages and temperatures. This controller drives N-channel MOSFETs and utilizes a simple single-loop voltage-mode control design, ensuring fast transient response due to its high-bandwidth error amplifier with a gain-bandwidth product of 15MHz and a slew rate of 8V/¬µs. The FAN6520BM features a fixed frequency oscillator operating at 300kHz, which simplifies design complexity while maintaining a compact converter size. It includes internal soft-start functionality and supports a full PWM duty cycle range from 0% to 100%. The device is packaged in an 8-lead SOIC and is rated for operation within a temperature range of 0¬8C to 70¬8C, making it suitable for various applications such as power supplies for PC subsystems, cable modems, and low-voltage distributed power supplies.