MP2225 5A, 500kHz Step-Down Converter TSOT23

MP2225 5A, 500kHz Step-Down Converter TSOT23

Key Specifications

Features

• Wide 4.5V-to-18V Operating Input Range
• Adjustable Output Voltage as low as 0.6V
• Low 47mΩ/18mΩ RDS(ON) of Internal Power MOSFETs
• High Efficiency up to 97%
• Fixed 500kHz Switching Frequency
• Synchronizes from a 200kHz-to-2MHz External Clock
• 2.4ms Internal Soft-Start Time
• 1% Reference Accuracy at Room Temperature
• Internal Power-save Mode
• OCP with hiccup mode

Applications

• Flat-Panel Television and Monitors
• Notebook Systems and I/O Power
• Digital Set-Top Boxes

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