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User's Guide
SNVA647A–May 2012–Revised April 2013
AN-2238 LM5019 Buck Evaluation Board
1 Introduction
The LM5019 evaluation board provides the design engineer with a fully functional buck regulator,
employing the constant on-time (COT) operating principle. This evaluation board provides a 10V output
over an input range of 12.5V to 100V.
The board’s specifications are:
• Input Range: 12.5V to 95V, transients up to 100V (absolute maximum)
• Output Voltage: 10V
• Output Current: 100mA
• Nominal Switching Frequency ~ 440kHz
• Measured Efficiency: 85% at 100mA and VIN = 24V
• Board size: 5.5 cm x 4.5 cm
Figure 1. Evaluation Board (Top View)
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SNVA647A–May 2012–Revised April 2013 AN-2238 LM5019 Buck Evaluation Board
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