Texas Instruments recommends a thermal pad on the bottom of the package, connected to a large copper area on the PCB to dissipate heat. A minimum of 2oz copper thickness is recommended. Additionally, vias should be placed under the thermal pad to connect to an internal copper plane or the backside of the PCB.
To ensure stable and accurate output voltage, it's essential to follow the recommended capacitor values and types for the input and output capacitors. Additionally, the output voltage should be decoupled with a 10uF ceramic capacitor to reduce noise and oscillations.
Although the datasheet specifies a maximum input voltage of 15V, it's recommended to limit the input voltage to 12V to ensure reliable operation and prevent damage to the device.
The LM3290TME/NOPB has built-in overcurrent protection, but it's still recommended to add external protection such as a fuse or a current-limiting resistor to prevent damage from excessive current. Additionally, a diode can be added in parallel with the output capacitor to prevent back-EMF from damaging the device.
Although the datasheet specifies an operating temperature range of -40°C to 125°C, it's recommended to operate the device within a range of 0°C to 85°C for optimal performance and reliability.
LM3290TME/NOPB datasheet
by Texas Instruments
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