Texas Instruments provides a recommended PCB layout in the application note SLVA365, which includes guidelines for thermal vias, copper pours, and component placement to minimize thermal resistance and ensure optimal performance.
To ensure reliable operation in high-temperature environments, it's essential to follow the recommended operating conditions, use a suitable thermal interface material, and provide adequate heat sinking. Additionally, consider using a thermistor or thermal sensor to monitor the device temperature and implement thermal shutdown or warning mechanisms if necessary.
Although the datasheet doesn't explicitly state the maximum allowed voltage on the EN pin, it's generally recommended to limit the voltage to VCC + 0.3V to prevent damage to the internal ESD protection diodes. In this case, since VCC is 3.3V, the maximum allowed voltage on the EN pin would be 3.6V.
Yes, the LM9833CCVJD/NOPB is suitable for battery-powered devices due to its low quiescent current (IQ) of 10uA and low dropout voltage (VDO) of 200mV. However, it's essential to consider the overall system power consumption, battery life, and power management strategies to ensure efficient operation.
The output voltage tolerance can be calculated by considering the initial tolerance of the internal voltage reference, the resistor tolerance, and the temperature coefficient. A detailed calculation is provided in the application note SLVA364, which includes examples and formulas to determine the output voltage tolerance.
LM9833CCVJD/NOPB datasheet
by Texas Instruments
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