A good PCB layout for the LP38690DT-2.5/NOPB involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the input and output traces. Additionally, it's recommended to use a separate analog ground plane and to keep the power traces away from the analog signals.
To ensure stability, make sure to follow the recommended PCB layout, use the correct output capacitor value, and add a compensation capacitor (if necessary). Also, ensure that the input voltage is within the recommended range, and the output current is within the specified limits.
The LP38690DT-2.5/NOPB can handle input voltages up to 15V, but it's recommended to operate within the specified input voltage range of 2.5V to 12V for optimal performance and reliability.
The LP38690DT-2.5/NOPB is rated for operation up to 125°C, but it's recommended to derate the output current and voltage at higher temperatures to ensure reliability. Consult the datasheet for specific derating guidelines.
The output voltage of the LP38690DT-2.5/NOPB is determined by the input voltage, output voltage divider resistors, and the internal voltage reference. Use the formula: Vout = (R1 / R2) * (Vin - Vref), where R1 and R2 are the output voltage divider resistors, Vin is the input voltage, and Vref is the internal voltage reference (typically 2.5V).
LP38690DT-2.5/NOPB datasheet
by Texas Instruments
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