The MAX892LEUA requires careful layout and placement to minimize noise and ensure optimal performance. It is recommended to place the device close to the battery, use a solid ground plane, and keep the input and output traces short and wide. Additionally, it is recommended to place a 10uF ceramic capacitor between the input and ground pins, and a 22uF ceramic capacitor between the output and ground pins.
The MAX892LEUA has a fixed output voltage of 3.3V, but it can be adjusted using an external resistor divider network. To select the correct output voltage, you need to calculate the required resistor values based on the desired output voltage and the internal reference voltage of the device. You can use the formula provided in the datasheet to calculate the resistor values.
The MAX892LEUA has a maximum input voltage rating of 14V, but it is recommended to operate the device within the specified input voltage range of 4.5V to 12V for optimal performance and reliability.
To ensure stability and prevent oscillation, it is recommended to use a minimum output capacitance of 22uF, and to place a 1uF ceramic capacitor between the output and ground pins. Additionally, it is recommended to use a low-ESR output capacitor and to minimize the output voltage ripple.
The typical dropout voltage of the MAX892LEUA is around 1.5V, which means that the input voltage must be at least 1.5V higher than the output voltage to ensure proper regulation.
MAX892LEUA datasheet
by Maxim Integrated Products
