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, and the thermal pad should be connected to a ground plane or a dedicated heat sink.
To ensure stable operation with a high-capacitance output capacitor, ROHM recommends adding a 1-10nF ceramic capacitor in parallel with the output capacitor to reduce the output impedance and prevent oscillation.
The maximum allowed voltage on the EN (enable) pin is 6V, which is the same as the maximum input voltage of the device. Applying a voltage higher than 6V may damage the internal circuitry.
The BD61247NUX-E2 is rated for operation up to 105°C, but ROHM recommends derating the output current and voltage to ensure reliable operation at high temperatures. Consult the datasheet for specific derating guidelines.
The power dissipation of the BD61247NUX-E2 can be calculated using the formula: Pd = (Vin x Iin) + (Vout x Iout) + (Vcc x Icc), where Vin, Iin, Vout, Iout, Vcc, and Icc are the input voltage, input current, output voltage, output current, internal voltage, and internal current, respectively.
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