Monolithic Power Systems MP8778

Description

The MP8778 is a monolithic, synchronous, rectified, step-down, switch-mode converter. It offers a very compact solution to achieve a continuous 3A output current over a wide input supply range with excellent load and lineregulation. The MP8778 operates at high efficiency over a wide output current load range with an integrated 180mΩ high-side MOSFET and an integrated 75mΩ low-side MOSFET.Current mode operation provides a fast transient response and eases loop stabilization.The device also uses MPS’s proprietary Advanced Asynchronous Modulation for high efficiency at light load.Full protection features include cycle-by-cycle current limiting and thermal shutdown.The MP8778 is available in a thermallyenhanced PDIP8 package with exposed pad on top.

Features

• Wide 4.5-to-20V Operating Input Range
• Continuous 3A Output Current
• Peak-Current–Mode Control and Internal Compensation
• Integrated 180mΩ High-Side and 75mΩ Low-Side Power MOSFETs
• Up to 92% Efficiency for VIN=12V, VO=3.3V
• 90% Maximum Duty Cycle
• Proprietary Switching-Loss–Reduction Technique
• Fixed 160kHz Switching Frequency
• Cycle-by-Cycle Over-Current Protection with Hiccup and Thermal Shutdown
• Output Adjustable from 0.8V
• Available in Thermally Enhanced PDIP8 Package with Exposed Pad on Top

Typical applications

• LCD TV
• Ultra-Thin Monitors

More information

• Datasheet
• IC product information