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LM7918CT LM7918C LM7918 7918

Specifications

SKU: 11255263

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Parameter LM7918CT / LM7918C / LM7918 / 7918
Output Voltage -18V (Fixed)
Input Voltage Range -20V to -35V
Output Current 1.5A (Maximum)
** Dropout Voltage** 2.2V (Typical at 1.5A)
Quiescent Current 8mA (Maximum)
Thermal Shutdown Yes
Short-Circuit Protection Yes
Operating Temperature Range -40°C to +125°C
Package Type TO-220, TO-92, SOT-223
Storage Temperature Range -65°C to +150°C

Instructions for Use:

  1. Power Supply Connection:

    • Connect the input voltage to the "IN" pin.
    • Connect the output voltage to the "OUT" pin.
    • Ensure the ground is connected to the "GND" pin.
  2. Capacitor Requirements:

    • Place a 0.33 μF capacitor between the input and ground to stabilize the input voltage.
    • Place a 0.1 μF capacitor between the output and ground to stabilize the output voltage.
  3. Heat Dissipation:

    • For high current applications, ensure adequate heat sinking to prevent overheating.
    • The thermal resistance (θJA) should be considered when designing the heat sink.
  4. Short-Circuit Protection:

    • The regulator has built-in short-circuit protection, but it is recommended to use external fuses or circuit breakers for additional safety.
  5. Thermal Shutdown:

    • The device will automatically shut down if the temperature exceeds the safe operating range to prevent damage.
  6. Mounting:

    • Ensure proper mounting to a heatsink if operating at high currents or in high ambient temperatures.
  7. Storage:

    • Store the device in a dry, cool place within the specified storage temperature range to avoid damage.
  8. Handling:

    • Handle with care to avoid damaging the pins and the internal components. Use appropriate ESD (Electrostatic Discharge) precautions.
(For reference only)

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