The minimum input voltage required is 3V, but it's recommended to have at least 1.5V of headroom above the desired output voltage to ensure proper regulation.
The output voltage can be adjusted by connecting a resistor divider network between the output and the adjust pin. The ratio of the resistors determines the output voltage, which can be calculated using the formula: Vout = 1.25V * (1 + R1/R2).
The maximum output current of the LM1117T-ADJ/NOPB is 1A, but it's recommended to derate the output current based on the input voltage and ambient temperature to ensure reliable operation.
To ensure stability, a minimum output capacitance of 10uF is recommended, with an ESR (Equivalent Series Resistance) of less than 5 ohms. Additionally, the input capacitor should be at least 10uF with an ESR of less than 5 ohms.
The thermal shutdown temperature of the LM1117T-ADJ/NOPB is typically around 150°C, but it can vary depending on the specific device and operating conditions.
LM1117T-ADJ/NOPB datasheet
by Texas Instruments
