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UC2843D013TR

Specifications

SKU: 11735652

BUY UC2843D013TR https://www.utsource.net/itm/p/11735652.html

Parameter Description Min Typ Max Unit
Supply Voltage (Vcc) Operating supply voltage range 7.5 - 40 V
Quiescent Current (Icc) Supply current with no load - 1.5 - mA
Start-Up Current (Icc(start)) Supply current during start-up - 0.25 - mA
Switching Frequency (fsw) Internal oscillator frequency 100 500 - kHz
Dead Time (tdead) Minimum dead time between high-side and low-side switches - 1.5 - μs
Maximum Duty Cycle (Dmax) Maximum duty cycle - 96 - %
Thermal Shutdown Temperature (Tsd) Temperature at which thermal shutdown occurs - 160 - °C
Thermal Hysteresis (Thys) Temperature hysteresis for thermal shutdown recovery - 15 - °C
Output Voltage (Vout) Output voltage range - 15 - V
Output Current (Iout) Maximum output current - 1 - A

Instructions for Using UC2843D013TR:

  1. Power Supply:

    • Ensure the supply voltage (Vcc) is within the range of 7.5V to 40V.
    • The quiescent current (Icc) is typically 1.5mA, and the start-up current (Icc(start)) is 0.25mA.
  2. Oscillator Configuration:

    • Set the switching frequency (fsw) by selecting appropriate external components (resistor and capacitor) connected to the RT/CT pin. The typical range is from 100kHz to 500kHz.
  3. Dead Time:

    • The minimum dead time (tdead) between high-side and low-side switches is 1.5μs to prevent shoot-through currents.
  4. Duty Cycle:

    • The maximum duty cycle (Dmax) is 96%. Ensure that the duty cycle does not exceed this value to avoid potential issues.
  5. Thermal Management:

    • The device will shut down if the temperature exceeds 160°C. The thermal hysteresis (Thys) is 15°C, meaning the device will restart once the temperature drops below 145°C.
  6. Output Configuration:

    • The output voltage (Vout) is typically 15V, and the maximum output current (Iout) is 1A. Ensure that the load connected to the output does not exceed these limits.
  7. Layout Considerations:

    • Use proper PCB layout techniques to minimize noise and ensure stable operation. Keep power and ground traces short and wide, and use bypass capacitors close to the Vcc pin.
  8. Protection Features:

    • The UC2843D013TR includes built-in thermal shutdown and overcurrent protection. Ensure that these features are not triggered under normal operating conditions by designing the circuit appropriately.
  9. Application Notes:

    • Refer to the datasheet and application notes for detailed information on specific applications and advanced configurations.
(For reference only)

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