The LM317L-N is an adjustable positive voltage regulator capable of supplying 100 mA over a 1.2-V to 37-V output range. The LM317L-N is easy to use and requires only two external resistors to set the output voltage. Both line and load regulation are better than standard fixed regulators. The LM317L-N is available packaged in a standard, easy-to-use
TO-92 transistor package.
The LM317L-N offers full overload protection. Included on the chip are current limit, thermal overload protection, and safe area protection. Normally, no capacitors are required unless the device is situated more than 6 inches from the input filter capacitors, in which case an input bypass is required.
The LM317L-N uses floating topology and sees only the input-to-output differential voltage, therefore supplies of several hundred volts can be regulated, provided the maximum input-to-output differential is not exceeded. The device makes a simple adjustable switching regulator, a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the LM317L-N can be used as a precision current regulator.
The LM317L-N is available in a standard 3-pin TO-92 transistor package, the 8-pin SOIC package, and 6-pin DSBGA package. The LM317L-N is rated for operation over a −40°C to 125°C range.
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Output options |
Iout (Max) (A) |
Vin (Max) (V) |
Vin (Min) (V) |
Vout (Max) (V) |
Vout (Min) (V) |
Fixed output options (V) |
Package Group |
Features |
Regulated outputs (#) |
Operating temperature range (C) |
Thermal Resistance θJA (°C/W) |
Noise (uVrms) |
Approx. price (US$) |
Rating |
Output capacitor type |
PSRR @ 100 KHz (dB) |
Accuracy (%) |
Vdo (Typ) (mV) |
Iq (Typ) (mA) |
Package size: mm2:W x L (PKG) |
LM317L-N | LM117 | LM140L | LM317-N | LM317A | LM317HV | LM330-N | LM340L | LM723 |
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Adjustable Output | Adjustable Output | Fixed Output | Adjustable Output | Adjustable Output | Adjustable Output | Fixed Output | Fixed Output | Adjustable Output |
0.1 | 1.5 | 0.1 | 1.5 | 1.5 | 1.5 | 0.15 | 0.1 | 0.15 |
40 | 40 | 35 | 40 | 40 | 60 | 26 | 35 | 40 |
4.2 | 4.2 | 17.6 | 4.2 | 4.2 | 4.2 | 6 | 7 | 9.5 |
38 | 37 | 15 | 37 | 37 | 57 | 5 | 15 | 37 |
1.2 | 1.25 | 5 | 1.2 | 1.2 | 1.25 | 5 | 5 | 2 |
5 12 15 |
5 |
5 12 15 |
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DSBGA | 6
SOIC | 8 TO-92 | 3 |
TO-3 | 2
TO | 3 |
TO | 3 |
DDPAK/TO-263 | 3
SOT-223 | 4 TO-220 | 3 TO-252 | 3 |
SOT-223 | 4
TO-220 | 3 TO-252 | 3 TO | 3 |
TO-220 | 3 | TO-220 | 3 | TO-92 | 3 | TO-100 | 10 |
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1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
-40 to 125 |
-55 to 125 -55 to 150 |
-55 to 125 | 0 to 125 | -40 to 125 | 0 to 125 | 0 to 70 | 0 to 70 | -55 to 150 |
160 | 39 | 26 | 39 | 24 | 23 | 50 | 232 | 66 |
38 | 75 | 40 | 35 | 38 | 1710 | 50 | 40 | 86 |
0.21 | 1ku | 7.52 | 1ku | 7.35 | 1ku | 0.43 | 1ku | 0.61 | 1ku | 0.95 | 1ku | 0.44 | 1ku | 0.30 | 1ku | 5.61 | 1ku |
Catalog |