LM317AMDTX/NOPB

Product Summary

The LM317AMDTX/NOPB adjustable 3-terminal positive voltage regulators is capable of supplying in excess of 1.5A over a 1.2V to 37V output range. It is exceptionally easy to use and require only two external resistors to set the output voltage. Further, both line and load regulation are better than standard fixed regulators. Included on the chip are 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 LM317AMDTX/NOPB is situated more than 6 inches from the input filter capacitors in which case an input bypass is needed. An optional output capacitor can be added to improve transient response. The adjustment terminal can be bypassed to achieve very high ripple rejection ratios which are difficult to achieve with standard 3-terminal regulators. Also, LM317AMDTX/NOPB makes an especially simple adjustable switching regulator, a programmable output regulator, or by connecting a fixed resistor between the adjustment pin and output, the LM317AMDTX/NOPB can be used as a precision current regulator. Supplies with electronic shutdown can be achieved by clamping the adjustment terminal to ground which programs the output to 1.2V where most loads draw little current. For the negative complement, see LM317AMDTX/NOPB data sheet.

Parametrics

LM317AMDTX/NOPB absolute maximum ratings: (1)Power Dissipation: Internally Limited; (2)Input-Output Voltage Differential: +40V, -0.3V; (3)Storage Temperature: -65℃ to +150℃; (4)Lead Temperature, Metal Package (Soldering, 10 seconds): 300℃; Plastic Package (Soldering, 4 seconds): 260℃; (5)ESD Tolerance (Note 5): 3 kV.

Features

LM317AMDTX/NOPB features: (1)Guaranteed 1% output voltage tolerance (LM317A); (2)Guaranteed max. 0.01%/V line regulation (LM317A); (3)Guaranteed max. 0.3% load regulation (LM117); (4)Guaranteed 1.5A output current; (5)Adjustable output down to 1.2V; (6)Current limit constant with temperature; (7)P+ Product Enhancement tested; (8)80 dB ripple rejection; (9)Output is short-circuit protected.

Diagrams