Murata recommends a 2-layer PCB with a solid ground plane on the bottom layer and a thermal relief pattern on the top layer to ensure optimal thermal performance.
To ensure reliable start-up, Murata recommends using a soft-start circuit or a voltage supervisor to prevent the 1009C from drawing excessive current during start-up in low-line input conditions.
The 1009C can drive a maximum capacitive load of 10uF, but it's recommended to derate the capacitive load to 4.7uF or less to ensure stable operation.
To troubleshoot, check the input voltage, output voltage, and feedback voltage to ensure they are within the specified ranges. Also, verify that the feedback resistors are correctly connected and that the output capacitor is of sufficient value.
Yes, the 1009C is rated for operation up to 125°C, but it's recommended to derate the output current and input voltage to ensure reliable operation in high-temperature environments.
