LM348N datasheet by STMicroelectronics

LM348N Frequently Asked Questions (FAQs)

• What is the maximum power dissipation of the LM348N?
  The maximum power dissipation of the LM348N is 1.4W, but it can be increased to 2.5W if the device is mounted on a suitable heat sink.
• Can I use the LM348N as a voltage regulator for a high-current application?
  While the LM348N can handle up to 1.5A of output current, it's not recommended for high-current applications due to its limited power dissipation capability. For high-current applications, consider using a more suitable voltage regulator like the 78xx or 79xx series.
• How do I ensure the stability of the LM348N voltage regulator?
  To ensure stability, make sure to use a minimum output capacitance of 1uF, and a minimum input capacitance of 0.1uF. Additionally, keep the input and output capacitors close to the regulator to minimize parasitic inductance.
• Can I use the LM348N as a negative voltage regulator?
  No, the LM348N is a positive voltage regulator and cannot be used as a negative voltage regulator. For negative voltage regulation, consider using a dedicated negative voltage regulator like the 79xx series.
• What is the minimum input voltage required for the LM348N to function properly?
  The minimum input voltage required for the LM348N to function properly is 2V above the desired output voltage. For example, for a 5V output, the minimum input voltage should be at least 7V.