ROHM recommends a PCB layout with a solid ground plane, short and wide traces for power and ground, and a decoupling capacitor (e.g., 100nF) close to the device. A 4-layer PCB with a dedicated power plane is also recommended.
ROHM recommends a thermal pad on the bottom of the device, connected to a thermal vias or a heat sink. Ensure good thermal conductivity between the device and the heat sink or thermal vias. A thermal interface material (e.g., thermal tape or thermal grease) can be used to improve heat transfer.
The maximum allowed voltage on the EN pin is VCC + 0.3V. Exceeding this voltage may damage the device. It's recommended to use a voltage limiter or a voltage divider to ensure the EN pin voltage remains within the specified range.
The PMR25HZPJV2L0 is rated for operation up to 125°C. However, the device's performance and reliability may degrade at high temperatures. ROHM recommends derating the output current and voltage according to the temperature derating curve provided in the datasheet.
ROHM recommends checking the input voltage, output voltage, and current consumption. Verify that the device is properly soldered and that there are no shorts or opens on the PCB. Use an oscilloscope to check for voltage ripple, noise, or oscillations. Consult the datasheet and application notes for troubleshooting guidelines.
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PMR25HZPJV2L0 Overview
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