Description:Quasi-resonant peak current mode control operation; Valley switching operation with valley lockout; Frequency foldback at light load; Adjustable overpower protection; Auto-recovery or latched internal output short circuit protection; Fixed internal 80 ms timer for short circuit protection; Combined overvoltage and overtemperature protection (A and B versions); Combined overvoltage protection and brownout (C and D versions); VCC range operation up to 28 V
A good PCB layout for the NCP1380BDR2G should include a solid ground plane, separate analog and digital grounds, and a decoupling capacitor (e.g., 10uF) between VIN and GND. Additionally, keep the input and output capacitors close to the IC and use short, wide traces for the power lines.
Choose X5R or X7R ceramic capacitors with a voltage rating of at least 1.5 times the input voltage. For the input capacitor, a value of 4.7uF to 10uF is recommended. For the output capacitor, a value of 10uF to 22uF is recommended. Ensure the capacitors are placed close to the IC and have a low ESR.
The NCP1380BDR2G is rated for operation from -40°C to +125°C. However, the maximum ambient temperature range for reliable operation is typically considered to be -20°C to +85°C.
To ensure stability, ensure the input and output capacitors are properly selected and placed, and the PCB layout is well-designed. Additionally, a minimum ESR of 0.1 ohms is recommended for the output capacitor. If oscillations occur, try adding a small resistor (e.g., 1 ohm) in series with the output capacitor.
The NCP1380BDR2G is capable of delivering up to 2A of output current. However, the maximum output current may be limited by the input voltage, output voltage, and thermal considerations.
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NCP1380BDR2G Overview
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