ROHM provides a recommended PCB layout in the application note AN1191, which includes guidelines for thermal vias, copper pours, and component placement to minimize thermal resistance and ensure reliable operation.
The input capacitor selection depends on the input voltage, output voltage, and output current. ROHM recommends using a low-ESR capacitor with a value between 4.7uF to 10uF, and a voltage rating of at least 1.5 times the input voltage. Refer to the application note AN1191 for more details.
The BM81028AMWV-ZE2 has a maximum ambient temperature rating of 105°C, but it's recommended to operate it at a maximum temperature of 85°C for optimal reliability and performance.
ROHM recommends following the power-up and power-down sequences outlined in the datasheet, which include controlling the enable pin, input voltage, and output voltage to prevent damage and ensure reliable operation.
The typical efficiency of the BM81028AMWV-ZE2 varies depending on the input voltage, output voltage, and output current. According to the datasheet, the device can achieve an efficiency of up to 95% at 5V input, 3.3V output, and 1A output current.
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