MPQ28261DL-LF-Z

The MPQ28261 is a synchronous, rectified, step-down, switch-mode converter with built-in 120m? high-side MOSFET and 20m? low-side MOSFET. It offers a very compact solution to achieve a continuous 3A output current over a wide input supply range, with excellent load and line regulation. Its synchronous mode operation increases its efficiency over its output current load range, and uses a fixed 500kHz switching frequency. Current mode operation provides a fast transient response and improves loop stabilization. Full protection features include over-current protection and thermal shut down. The MPQ28261DL-LF-Z has an external SS pin to program the soft-start time and power-good signal output. The MPQ28261DL-LF-Z requires a minimal number of readily-available standard external components and is available in a space saving 3mmx4mm 14-pin QFN package.

• Wide 4.5V-to-21V Operating Input Range
• 3A Maximum Continuous Output Current
• Integrated 120m? High-Side and 20m? Low-Side Power MOSFETs
• 1% Reference Voltage Accuracy
• Up to 85% Efficiency (for Drops of 12V to 1.2V)
• Fixed 500kHz Switching Frequency
• External Soft-Start
• PG Output
• OCP and Thermal Shutdown
• Output Adjustable from 0.603V to 18V
• Available in a 3mm x 4mm 14-pin QFN Package.