MP8639 4.5-16V, 6A Synchronous Step-Down Converter QFN-11

MP8639 4.5-16V, 6A Synchronous Step-Down Converter QFN-11

Key Specifications

Features

• Wide 4.5V to 16V Operating Input Voltage (VIN) Range
• 6A Continuous Output Current (IOUT)
• 7.5A Peak IOUT (IOUT_PEAK)
• Low 105μA Quiescent Current (IQ)
• Adaptive Constant-On-Time (COT) Control for Fast Transient Response
• DC Auto-Tune Loop and Remote Differential Sense
• Low On Resistance (RDS(ON)) Internal Power MOSFETs
• MPS Proprietary Switching Loss Reduction Technique
• Stable with POSCAP and Ceramic Capacitors
• 1% Accurate Reference Voltage (VREF)

Applications

• Telecom and Networking Systems
• Servers, Cloud Computing, and Storage
• Base Stations
• General-Purpose Point-of-Load (PoL)
• 12V Distribution Power Systems
• High-End TVs

Design Notes

• The step-down topology needs an inductor and output capacitor sized for the ripple at the switching frequency, not just the DC load.
• Keep the input loop short — high di/dt at the switch node sets conducted EMI.
• Power switches are integrated, so the thermal path is the PCB copper under the pad.
• Package QFN-11 — check the land pattern in the datasheet before layout.

Common Questions