Description:Operating Input Voltage Range: 2.7 V to 18 V; Output Voltage: 1.2 V to 17 V; Capable of Sourcing 140 mA Peak Output Current; Low Shutdown Current: 100 nA typ.; Very Low Quiescent Current: 1 uA typ.; Low Dropout: 215 mV typ. at 100 mA; Output Voltage Accuracy ±1%; Power Good Output (Version B); Stable with Small 1 uF Ceramic Capacitors; Built−in Soft Start Circuit
A good PCB layout for optimal thermal performance would be to have a solid ground plane on the bottom layer, and to use thermal vias to connect the exposed pad to the ground plane. This helps to dissipate heat efficiently.
To ensure reliable operation at high temperatures, it's essential to follow the recommended operating conditions, ensure good thermal design, and consider using a heat sink if necessary. Additionally, consider using a thermistor or thermocouple to monitor the temperature and implement over-temperature protection if needed.
For EMI filtering and noise reduction, consider using a pi-filter or a common-mode choke at the input, and ensure that the PCB layout is designed to minimize noise coupling. Additionally, use shielding and grounding techniques to reduce radiated emissions.
When selecting input and output capacitors, consider the voltage rating, capacitance value, and ESR (Equivalent Series Resistance) requirements. Choose capacitors with a voltage rating higher than the maximum input voltage, and ensure the capacitance value is sufficient to filter out ripple and noise.
Critical parameters to monitor for fault detection and protection include input voltage, output voltage, output current, and temperature. Implement over-voltage, under-voltage, over-current, and over-temperature protection to ensure reliable operation and prevent damage to the device.
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NCV8711ASN330T1G Overview
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