MP1471A 3A, 500kHz Step-Down Converter TSOT23

MP1471A 3A, 500kHz Step-Down Converter TSOT23

Key Specifications

Features

• Wide 4.5V-to-16V Operating Input Range
• 110mΩ/57mΩ Low-RDS(ON) Internal Power MOSFETs
• Proprietary Switching-Loss–Reduction Technology
• High-Efficiency Synchronous-Mode Operation
• Fixed 500kHz Switching Frequency
• Internal AAM Power-Save Mode for High Efficiency at Light Load
• Internal Soft-Start
• Over-Current Protection and Hiccup
• Thermal Shutdown
• Output Adjustable from 0.8V

Applications

• Game Consoles
• Digital Set-Top Boxes
• Flat-Panel Television and Monitors

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 TSOT23 — check the land pattern in the datasheet before layout.

Common Questions