The recommended input capacitor value is 1uF to 10uF, depending on the input voltage and output current requirements. A larger capacitor value can help to reduce input voltage ripple and improve output voltage regulation.
The output voltage of the LP38851SX-ADJ/NOPB can be adjusted by connecting a resistor divider network between the output pin and the adjust pin. The output voltage is determined by the ratio of the resistors and the internal reference voltage.
The maximum output current capability of the LP38851SX-ADJ/NOPB is 1.5A. However, the output current should be derated based on the input voltage, output voltage, and ambient temperature to ensure reliable operation.
To ensure stability, it is recommended to follow the layout guidelines provided in the datasheet, use a sufficient input capacitor value, and minimize the distance between the input capacitor and the device. Additionally, the output capacitor value should be chosen based on the output voltage and output current requirements.
The thermal shutdown temperature of the LP38851SX-ADJ/NOPB is typically around 150°C to 160°C. When the device temperature exceeds this threshold, it will shut down to prevent damage.
LP38851SX-ADJ/NOPB datasheet
by Texas Instruments
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