GENERAL DESCRIPTION

The MA5821 is an asynchronous buck controller. The device needs external high side power

MOSFET and low side schottky diode, and provides 3A of continuous load current over a wide

input voltage of 10V to 58V range. Current mode control provides fast transient response and

cycle-bicycle current limit. An internal soft-start function prevents inrush current at turn-on.

This device is available in small MSOP-10L-EP package, and provides a very compact

solution with minimal external components.

FEATURES

- Wide 10V~ 58V Operating Input Range

- External High-Side P-channel MOSFET Switch

- Output Adjustable : VFB(1.00V±2)

- Up to 93 Efficiency

- Internal Soft-Start / Thermal Shutdown Protection

- Fixed 240KHz Frequency

- Cycle-by-Cycle Over Current Protection

- Input Under/Over Voltage Lockout