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L78MR05L-FA

Specifications

SKU: 11218059

BUY L78MR05L-FA https://www.utsource.net/itm/p/11218059.html

Parameter Symbol Min Typ Max Unit Notes
Input Voltage VI 6.5 - 40 V
Output Voltage VO 4.8 5.0 5.2 V Fixed
Output Current IO - 1.0 - A
Line Regulation - - 0.004 - %/V
Load Regulation - - 0.01 - %/mA
Dropout Voltage VD - 1.3 - V @ IO = 1A, VI = 5.5V
Quiescent Current IQ - 6.5 - mA
Thermal Resistance (θJA) - - 50 - °C/W
Operating Temperature Toper -40 - 125 °C
Storage Temperature Tstg -65 - 150 °C

Instructions for Use:

  1. Input Voltage (VI):

    • Ensure the input voltage is within the range of 6.5V to 40V.
    • The minimum input voltage should be at least 1.3V higher than the output voltage to maintain regulation.
  2. Output Voltage (VO):

    • The output voltage is fixed at 5.0V with a tolerance of ±2% (4.8V to 5.2V).
  3. Output Current (IO):

    • The device can provide up to 1.0A of continuous output current.
  4. Line Regulation:

    • The output voltage changes by 0.004% per volt change in input voltage.
  5. Load Regulation:

    • The output voltage changes by 0.01% per milliamp change in load current.
  6. Dropout Voltage (VD):

    • The dropout voltage is typically 1.3V at an output current of 1A and an input voltage of 5.5V.
  7. Quiescent Current (IQ):

    • The quiescent current is typically 6.5mA.
  8. Thermal Management:

    • The thermal resistance (θJA) is 50°C/W. Ensure proper heat sinking if operating at high temperatures or currents to prevent overheating.
  9. Operating Temperature (Toper):

    • The device is rated to operate from -40°C to 125°C.
  10. Storage Temperature (Tstg):

    • Store the device between -65°C and 150°C.
  11. Mounting:

    • Mount the device on a PCB with adequate copper area for heat dissipation.
    • Ensure the mounting surface is clean and free of contaminants.
  12. Capacitors:

    • Use appropriate input and output capacitors to stabilize the regulator and filter out noise.
    • Typical values are 10μF for input and 10μF for output.
  13. PCB Layout:

    • Keep the input and output capacitors close to the regulator to minimize parasitic inductance.
    • Use wide traces for power and ground connections to reduce resistance and inductance.
  14. Testing:

    • Test the regulator under various load conditions to ensure it meets the required specifications.
    • Monitor the temperature of the device during testing to ensure it does not exceed the maximum operating temperature.
(For reference only)

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