The LM317 is an adjustable 3-terminal positive voltage regulator that is capable of supplying in excess of 1.5A over a 1.2V to 37V output range. LM317 is exceptionally easy to use and requires only two external resistors to set the output voltage. Both line and load regulation of lm317 is better than standard fixed regulators. The LM317 is package in standard transistor packages and it is easily mounted and handled.
In addition to higher performance than fixed regulators, the LM317 is offered full overload protection available only in IC’s. Included on the chip are the current limit, thermal overload protection, and safe area protection. All overload protection circuitry remains fully functional even if the adjustment terminal is disconnected. Normally, no capacitors are needed unless the device is situated more than 6 inches from the input filter capacitors in which case an input bypass is needed.
LM317 Pinout
LM317 Pin Configuration
| Pin No | Pin Name |
|---|---|
| 1 | ADJ |
| 2 | VOUT |
| 3 | VIN |
LM317 Key Features
- Guaranteed 1% output voltage tolerance (LM317A)
- Guaranteed max. 0.01%/V line regulation (LM317A)
- Guaranteed 1.5A output current
- Adjustable output down to 1.2V
- Current limit constant with temperature
- 80 dB ripple rejection
- Output is short-circuit protected
Application
- It used in programmable output regulation
- Local on-card regulator
- Adjustable switching regulator
You can download this datasheet for LM317 100mA Adjustable Positive Voltage Regulator – Datasheet from the link given below:
