| Output options | Adjustable Output |
| Iout (Max) (A) | 0.1 |
| Vin (Max) (V) | 40 |
| Vin (Min) (V) | 4.2 |
| Vout (Max) (V) | 38 |
| Vout (Min) (V) | 1.2 |
| Noise (uVrms) | 38 |
| Iq (Typ) (mA) | 0.05 |
| Thermal resistance θJA (°C/W) | 160 |
| Rating | Catalog |
| Load capacitance (Min) (μF) | 0 |
| Regulated outputs (#) | 1 |
| Accuracy (%) | 3 |
| PSRR @ 100 KHz (dB) | 63 |
| Dropout voltage (Vdo) (Typ) (mV) | 1800 |
| Operating temperature range (C) | -40 to 125 |
- Adjustable Output Down to 1.2 V
- 100-mA Output Current
- Capable of Handling up to 40V VIN
- Line Regulation Typically 0.01% /V
- Load Regulation Typically 0.1% /A
- No Output Capacitor Required (?)
- Current Limit Constant With Temperature
- Eliminates the Need to Stock Many Voltages
- Standard 3-Lead Transistor Package
- 80-dB Ripple Rejection
- Available in 3-Pin TO-92, 8-Pin SOIC, or 6-pin DSBGA Packages
- Output is Short-Circuit Protected
- See AN-1112 (SNVA009) for DSBGA Considerations
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.
