The minimum input voltage required for the LM2671LD-ADJ to operate is 7.5V, but it's recommended to use an input voltage of at least 8V to ensure proper operation and to account for voltage drops in the input filter.
The output voltage of the LM2671LD-ADJ can be set by connecting a resistor divider network between the output pin and the adjust pin. The formula to calculate the output voltage is Vout = 1.245V x (1 + R1/R2), where R1 and R2 are the resistors in the divider network.
The maximum output current of the LM2671LD-ADJ is 3A, but it's recommended to derate the output current based on the ambient temperature and the input voltage to ensure reliable operation.
To ensure stability of the LM2671LD-ADJ output voltage, it's recommended to use a minimum output capacitance of 22uF, and to place the output capacitor close to the output pin. Additionally, the input filter capacitor should be at least 10uF to reduce input voltage ripple.
The LM2671LD-ADJ is rated for operation up to 125°C, but it's recommended to derate the output current and to ensure good thermal design to prevent overheating. A heat sink may be required for high-power applications.
LM2671LD-ADJ datasheet
by Texas Instruments
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