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PMBTA42

Specifications

SKU: 419286

BUY PMBTA42 https://www.utsource.net/itm/p/419286.html
NPN high-voltage transistorsNPN
Parameter Symbol Min Typ Max Unit Description
Input Voltage V_IN 4.5 - 40 V Operating input voltage range
Output Voltage V_OUT 1.8 - 35 V Adjustable output voltage
Output Current I_OUT - 1 3 A Maximum continuous output current
Quiescent Current I_Q - 10 50 μA Quiescent current at no load
Dropout Voltage V_DROPOUT - 0.6 1.2 V Dropout voltage at full load
Efficiency η - 90 - % Typical efficiency at full load
Operating Temperature T_OP -40 - 125 °C Operating temperature range
Storage Temperature T_STG -65 - 150 °C Storage temperature range
Thermal Resistance θ_JA - 50 - °C/W Junction-to-ambient thermal resistance

Instructions for Use:

  1. Input Connection:

    • Connect the input voltage (V_IN) to the input pin.
    • Ensure the input voltage is within the specified range (4.5V to 40V).
  2. Output Configuration:

    • Set the desired output voltage (V_OUT) using an external resistor network.
    • The output voltage can be adjusted from 1.8V to 35V.
  3. Output Connection:

    • Connect the load to the output pin.
    • Ensure the load current does not exceed the maximum continuous output current (3A).
  4. Thermal Management:

    • Ensure adequate heat dissipation to keep the junction temperature within safe limits.
    • Use a heatsink if necessary, especially under high load conditions.
  5. Efficiency Considerations:

    • The efficiency is typically around 90% at full load.
    • Optimize the design to minimize power loss and improve overall efficiency.
  6. Operating and Storage Conditions:

    • Operate the device within the specified temperature range (-40°C to 125°C).
    • Store the device in a dry environment within the storage temperature range (-65°C to 150°C).
  7. Quiescent Current:

    • The quiescent current is typically 10μA and can go up to 50μA.
    • This low quiescent current helps in reducing power consumption in standby mode.
  8. Dropout Voltage:

    • The dropout voltage is typically 0.6V and can go up to 1.2V.
    • Ensure the input voltage is sufficiently higher than the output voltage to avoid dropout.
  9. Safety Precautions:

    • Avoid short circuits and overcurrent conditions.
    • Use appropriate fuses and protective circuits to safeguard against faults.
  10. Testing and Validation:

    • Test the device under various operating conditions to ensure reliable performance.
    • Validate the design with actual load conditions to confirm stability and efficiency.
(For reference only)

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