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 and a thermal relief pattern are 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 VCC + 0.3V. Exceeding this voltage may cause damage to the device.
While the BU7253F-E2 is rated for operation up to 125°C, it's essential to consider the derating of the maximum power dissipation and the junction temperature (Tj) when operating in high-temperature environments. Consult the datasheet and ROHM's application notes for guidance on high-temperature operation.
To prevent latch-up during power-on and power-off transitions, ensure that the power supply voltage (VCC) rises and falls slowly (typically < 10ms) and that the input signals are stable during these transitions. Additionally, consider adding a 1kΩ to 10kΩ resistor in series with the input pin to prevent latch-up.
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BU7253F-E2 Overview
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