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 stability, a minimum output capacitance of 10uF is recommended, with a low ESR (Equivalent Series Resistance) of less than 1 ohm. Additionally, a 1uF ceramic capacitor can be added in parallel to improve transient response.
The maximum allowed input voltage ripple is 1Vp-p, with a frequency range of 10Hz to 100kHz. Exceeding this limit may affect the regulator's performance and stability.
While RQ3E100BNTB is rated for operation up to 125°C, it's essential to consider the derating curves in the datasheet to ensure reliable operation. Above 85°C, the output current capability decreases, and the device may enter thermal shutdown.
ROHM recommends adding an external current limiting resistor or a fuse in series with the input voltage to protect the device from overcurrent conditions. Additionally, a short-circuit protection circuit can be implemented using a current sense resistor and a comparator.
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