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LM317T NEW ORIGINAL

Specifications

SKU: 11530746

BUY LM317T NEW ORIGINAL https://www.utsource.net/itm/p/11530746.html

Parameter Symbol Min Typ Max Unit
Input Voltage VIN 3.0 - 40 V
Output Voltage VOUT 1.2 - 37 V
Line Regulation 0.01 %/V
Load Regulation 0.1 %/mA
Dropout Voltage VD 1.0 - 2.5 V
Output Current IOUT 1.5 - 1.5 A
Quiescent Current IQ 5 10 mA
Thermal Resistance (θJA) 65 °C/W
Operating Temperature Toper -40 - 125 °C
Storage Temperature Tstg -65 - 150 °C

Instructions for Using the LM317T:

  1. Circuit Configuration:

    • Connect the input voltage (VIN) to the input terminal.
    • Connect the output voltage (VOUT) to the output terminal.
    • Connect the adjustment terminal (ADJ) to a resistor network to set the output voltage.
  2. Output Voltage Adjustment:

    • The output voltage is set by the ratio of two resistors, R1 and R2, connected between the output and adjustment terminals.
    • Use the formula: ( V_ = 1.25 left(1 + fracright) + I_ cdot R2 )
    • Typically, R1 is chosen to be 240Ω, and R2 is adjusted to achieve the desired output voltage.
  3. Capacitors:

    • Place a 0.1μF capacitor between the input and ground to improve transient response and stability.
    • Optionally, place a 10μF tantalum capacitor between the output and ground to improve ripple rejection.
  4. Heat Dissipation:

    • Ensure adequate heat sinking if the device is operating at high power levels to prevent overheating.
    • Calculate the power dissipation using ( P_D = (V_ - V_) cdot I_ ).
  5. Protection:

    • The LM317T includes internal thermal overload protection and safe area compensation.
    • Ensure the input voltage does not exceed 40V to avoid damaging the device.
  6. Storage and Handling:

    • Store the device in a dry environment within the specified storage temperature range.
    • Handle with care to avoid damage to the pins and the device itself.
(For reference only)

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