ROHM recommends a thermal pad on the bottom of the package, connected to a large copper area on the PCB to dissipate heat efficiently. A minimum of 2oz copper thickness is recommended.
To ensure stable operation, ROHM recommends a soft-start circuit to limit inrush current during power-up. Additionally, a capacitor should be placed close to the VIN pin to filter out noise and voltage spikes.
The maximum allowed voltage on the EN pin is 6V. Exceeding this voltage may damage the device. It's recommended to use a voltage divider or a level shifter if the control signal is higher than 6V.
While the BM2P159PF-E2 is rated for operation up to 125°C, ROHM recommends derating the output current and voltage to ensure reliable operation in high-temperature environments. Consult the datasheet for derating guidelines.
To troubleshoot oscillations or instability issues, check the PCB layout for proper decoupling, ensure the input and output capacitors are of sufficient value and type, and verify that the feedback network is properly designed and implemented.
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BM2P159PF-E2 Overview
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