LM109K/883 datasheet by Texas Instruments

LM109K/883 Frequently Asked Questions (FAQs)

• What is the maximum operating temperature range for the LM109K/883?
  The LM109K/883 is rated for operation from -55°C to 125°C, but it's recommended to derate the output voltage and current at higher temperatures to ensure reliability.
• Can I use the LM109K/883 in a high-reliability or aerospace application?
  Yes, the LM109K/883 is a radiation-hardened device, making it suitable for high-reliability and aerospace applications. However, it's essential to follow the recommended design and testing guidelines to ensure compliance with specific industry standards.
• How do I ensure the LM109K/883 is stable and doesn't oscillate?
  To ensure stability, follow the recommended PCB layout guidelines, use a sufficient output capacitor (at least 10uF), and keep the input and output capacitors close to the device. Additionally, avoid using long input and output wires, and decouple the input with a capacitor (e.g., 10nF) to reduce noise.
• What is the minimum input voltage required for the LM109K/883 to operate?
  The minimum input voltage required for the LM109K/883 to operate is 3.5V, but it's recommended to use a minimum input voltage of 4V to ensure proper operation and regulation.
• Can I use the LM109K/883 in a switching power supply design?
  Yes, the LM109K/883 can be used in switching power supply designs, but it's essential to follow proper design guidelines, including using a suitable output inductor, diode, and capacitor, as well as ensuring the device is properly bypassed and decoupled.