Description:Internal N-Channel Power Switch; Low VIN Operation Down to 4.5 V; High VIN Operation Up to 36 V; Withstands Load Dumps to 40 V; 2-MHz Free-Running Switching Frequency; Logic level Enable Input Can be Directly Tied to Battery; 1.4 A (min) Cycle-by-Cycle Peak Current Limit; Short-Circuit Protection enhanced by Frequency Foldback; ±1.75% Output Voltage Tolerance; Output Voltage Adjustable Down to 0.8 V; 1.4 ms Internal Soft-Start; Thermal Shutdown (TSD); Low Shutdown Current; NCV Prefix for Automotive and Othe
A good PCB layout for optimal thermal performance involves placing the device near a thermal pad or a heat sink, using thermal vias to dissipate heat, and keeping the surrounding area clear of other components.
To ensure reliable start-up and shutdown, make sure to follow the recommended power-up and power-down sequences, and use a soft-start circuit to limit inrush current.
Key considerations for EMI filtering and noise reduction include using a pi-filter or common-mode choke, placing the filter components close to the device, and using a shielded enclosure to minimize radiated emissions.
To protect the device from overvoltage and undervoltage conditions, use a voltage supervisor or a power-on reset circuit to monitor the input voltage and reset the device if it falls outside the recommended operating range.
Thermal design considerations for high-power applications include using a heat sink or thermal interface material, ensuring good airflow, and using a thermal simulation tool to model the device's thermal performance.
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NCV890100MWTXG Overview
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