Description: 2.6V to 5.5V Input Logic Level Range
−15V to 40V Output Voltage Range
Rise/Fall Time 700ns (Max)
Protection Functions: UVLO, OTP
RoHS Compliant and Halogen Free
Richtek provides a recommended PCB layout in their application note AND9133, which includes guidelines for thermal vias, copper pours, and component placement to minimize thermal resistance and ensure reliable operation.
To optimize output voltage accuracy and stability, ensure that the input voltage is within the recommended range, use a high-quality output capacitor with low ESR, and minimize the distance between the output capacitor and the RT8935GQW. Additionally, consider using a voltage reference capacitor with a high accuracy and low temperature coefficient.
Although not explicitly stated in the datasheet, Richtek recommends keeping the input voltage ripple below 1% of the input voltage to ensure stable operation and prevent oscillations.
While the RT8935GQW is rated for operation up to 125°C, it's essential to consider the derating curves and thermal management guidelines provided in the datasheet to ensure reliable operation in high-temperature environments. Additionally, consult with Richtek's application engineers for specific guidance on high-temperature applications.
To troubleshoot oscillations or instability issues, check the input voltage, output capacitor, and PCB layout for any potential issues. Ensure that the input voltage is within the recommended range, and the output capacitor is of high quality with low ESR. Also, verify that the RT8935GQW is properly decoupled from the input voltage and that the PCB layout follows the recommended guidelines.
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RT8935GQW Overview
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