- Adjustable down to 1.2V output
- Guaranteed 100mA output current
- The industry gauge is generally 0.01%V
- Load regulation is typically 0.1%
- Constant current limit with temperature
- Eliminates a lot of stock voltage
- Standard 3-pin transistor package
- 80 dB ripple suppression
- Available in TO-92, SO-8 or 6 solder ball micro SMD packages
- Output short-circuit protection
- See MicroSMD Consider AN - 1112
illustrate
The LM317L is an adjustable three-terminal regulator on the front side that provides a 100 mA capability from 1.2V to 37V output range. It is very easy to use and requires only two external resistors to set the output voltage. In addition, both line and load regulation is better than standard fixed regulators. In addition, the LM317L is available in a standard package TO-92 transistor package that is easy to use.
In addition to higher performance than fixed regulators, the LM317L provides complete overload protection. Includes current limit, overtemperature protection and protection of safe zones on the chip. All overload protection circuitry remains fully functional, even if the adjustment terminal is disconnected.
Typically, it is not necessary unless the capacitor device is more than 6 inches away from the capacitor in which case an input bypass input filter capacitor is required. An optional output capacitor can be added to improve transient response. The trim terminal can be bypassed to achieve very high ripple rejection ratios that are difficult to achieve with standard three-terminal regulators.
In addition to replacing fixed regulators, the LM317L is useful in a variety of other applications. Since regulators are "floating" and believe that only input-to-output differential voltages, power supplies of several hundred volts can be up to maximum input-to-output differential for a long time without exceeding the standard.
In addition, it enables a particularly simple adjustable switching regulator, a programmable output regulator, or a fixed resistor that connects the adjustment and the output, and the LM317L can be used as a precision current regulator. Turning off electronics can be achieved by clamping the end ground which programs to the 1.2V output, which most attracts small current loads.
The LM317L is available in a standard TO-92 transistor package, SO-8 package, 6-ball micro SMD package. The LM317L is rated for operation in the -40°C to 125°C range.
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