Description:Adjustable Voltage Version (from 5 V to 20 V) 3% Output Voltage; Enable Input; Adjustable Current Limit (from 10 mA to 350 mA)with 10% accuracy; AEC-Q100 Qualified; Protection: Current Limitation, Thermal Shutdown, Reverse Input Voltage
A good PCB layout for optimal thermal performance involves placing the device near a thermal pad or a heat sink, and ensuring good thermal conductivity between the device and the PCB. A 2-layer or 4-layer PCB with a solid ground plane is recommended. The datasheet provides a recommended PCB layout, but it's essential to consult with a PCB design expert for optimal results.
To ensure EMC, follow proper PCB design and layout guidelines, use a shielded enclosure, and ensure proper grounding and decoupling. Additionally, use a common-mode choke or a ferrite bead to filter out high-frequency noise. It's also essential to follow the guidelines outlined in the datasheet and relevant industry standards (e.g., IEC 61000-4-2).
The maximum allowed voltage on the VIN pin is 28V, as specified in the datasheet. However, it's recommended to operate the device within the recommended operating range (7V to 18V) for optimal performance and reliability.
The NCV47701PDAJR2G has built-in OVP and UVP features. For OVP, the device will shut down if the input voltage exceeds 28V. For UVP, the device will shut down if the input voltage falls below 4.5V. It's essential to ensure that the input voltage remains within the recommended operating range to prevent unwanted shutdowns.
The recommended input capacitor value is 10uF to 22uF, with a voltage rating of 25V or higher. A low-ESR ceramic capacitor (e.g., X5R or X7R) is recommended for optimal performance and reliability.
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NCV47701PDAJR2G Overview
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