ROHM recommends a thermal pad size of at least 2.5mm x 2.5mm, with multiple vias to the ground plane to ensure efficient heat dissipation. A minimum of 1oz copper thickness is also recommended.
To ensure stable operation with a high-impedance input source, add a 1kΩ to 10kΩ resistor in series with the input pin to prevent oscillation. Additionally, consider adding a 10nF to 100nF capacitor in parallel with the input pin to filter out high-frequency noise.
The maximum allowed voltage on the enable pin (EN) is 6V, which is the maximum rating for the logic input. Exceeding this voltage may cause damage to the device.
While the RZQ045P01TR is rated for operation up to 125°C, it's essential to consider the derating curves and thermal management to ensure reliable operation. ROHM recommends a maximum junction temperature of 150°C for this device.
To calculate the power dissipation, use the formula: Pd = (Vin - Vout) x Iout + (Vin x Iq), where Vin is the input voltage, Vout is the output voltage, Iout is the output current, and Iq is the quiescent current. Ensure that the calculated power dissipation does not exceed the maximum rating of 1.5W.
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RZQ045P01TR Overview
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