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A4502

Specifications

SKU: 1722258

BUY A4502 https://www.utsource.net/itm/p/1722258.html

Parameter Symbol Min Typ Max Unit
Supply Voltage Vcc 2.0 - 5.5 V
Output Current Iout - 100 300 mA
Quiescent Current Iq - 1.0 1.5 mA
Dropout Voltage Vdo - 0.3 0.6 V
Operating Temperature Topr -40 - 125 °C
Storage Temperature Tstg -65 - 150 °C

Instructions for Using A4502:

  1. Power Supply:

    • Ensure the supply voltage (Vcc) is within the range of 2.0V to 5.5V.
    • Use appropriate decoupling capacitors (e.g., 0.1μF and 10μF) close to the Vcc pin to filter out noise.
  2. Output Current:

    • The A4502 can provide up to 300mA of output current.
    • For higher currents, consider using external transistors or power stages.
  3. Quiescent Current:

    • The quiescent current (Iq) is typically 1.0mA and can go up to 1.5mA.
    • This is the current consumed by the device when it is not driving any load.
  4. Dropout Voltage:

    • The dropout voltage (Vdo) is the difference between the input and output voltages at which the regulator can no longer maintain regulation.
    • It is typically 0.3V and can go up to 0.6V.
  5. Temperature Range:

    • The operating temperature (Topr) range is from -40°C to 125°C.
    • The storage temperature (Tstg) range is from -65°C to 150°C.
  6. PCB Layout:

    • Place the A4502 as close as possible to the load to minimize trace resistance and inductance.
    • Use wide traces for power and ground connections to reduce voltage drops and improve thermal performance.
  7. Thermal Considerations:

    • Ensure adequate heat dissipation if the device will be operating near its maximum current and temperature limits.
    • Consider using a heatsink or thermal pad if necessary.
  8. Protection:

    • The A4502 includes internal short-circuit and over-temperature protection.
    • However, external fuses or current-limiting resistors may be needed for additional safety in some applications.
(For reference only)

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