LM137H/NOPB datasheet by Texas Instruments

LM137H/NOPB Frequently Asked Questions (FAQs)

• What is the maximum power dissipation of the LM137H?
  The maximum power dissipation of the LM137H is 1.5W. However, it's recommended to keep the junction temperature below 150°C to ensure reliable operation.
• How do I ensure stability in the voltage regulator circuit using the LM137H?
  To ensure stability, it's essential to use a minimum output capacitance of 10uF, and a maximum ESR of 5 ohms. Additionally, the input capacitor should be at least 10uF with an ESR of 5 ohms or less.
• What is the recommended input voltage range for the LM137H?
  The recommended input voltage range for the LM137H is 3.5V to 40V. Operating the device outside this range may affect its performance and reliability.
• Can I use the LM137H as a current source?
  Yes, the LM137H can be used as a current source. The device has a built-in current limiting feature that allows it to operate as a current source. However, the output current should not exceed the maximum rating of 1.5A.
• How do I protect the LM137H from overvoltage and undervoltage conditions?
  To protect the LM137H from overvoltage and undervoltage conditions, it's recommended to use a voltage supervisor or a reset IC to monitor the input voltage and reset the device if it falls outside the recommended range.