The maximum operating temperature range for the LM219N is -40°C to 150°C, but it's recommended to operate within -40°C to 125°C for optimal performance and reliability.
To ensure stability, make sure to follow the recommended PCB layout and component placement guidelines, use a sufficient output capacitor (at least 10uF), and add a small ceramic capacitor (around 100nF) between the output and ground pins.
The minimum input voltage required for the LM219N to operate is around 2.5V, but it's recommended to use a minimum input voltage of 3V to ensure proper operation and regulation.
The LM219N is designed for low-current applications (up to 1A). For high-current applications, consider using a different regulator, such as the L4940 or L4941, which can handle higher currents (up to 5A).
The output voltage of the LM219N can be calculated using the formula: Vout = Vref x (1 + R1/R2), where Vref is the internal reference voltage (around 1.25V), R1 is the resistance between the output and adjust pins, and R2 is the resistance between the adjust and ground pins.
LM219N datasheet
by STMicroelectronics
