Adjustable 100 mA rail for noise-sensitive loads
The LM317LCPW is a positive adjustable linear regulator from Texas Instruments delivering up to 100 mA output current from a 1.2 V to 32 V output range, with a maximum input voltage of 38 V. Its PSRR of 80 dB to 65 dB at 120 Hz means it cleans up ripple from a rectified AC rail or switching pre-regulator before feeding sensitive analog stages — op-amp supplies, ADC reference buffers, or low-noise bias lines. The 2.5 mA quiescent current is typical for a three-terminal adjustable regulator of this class; it does not dominate the load budget at 100 mA output, but the dropout voltage should be checked against the minimum input-to-output differential for the target current.
Protection and package realities for the assembly line
Built-in over-current, over-temperature, and short-circuit protection reduce the external component count — no need for a separate crowbar or thermal shutdown IC on the secondary side of the rail. The 8-TSSOP package (4.40 mm width, 0.65 mm pitch typical for the family) is a standard surface-mount footprint. The tube shipping format means the parts arrive in anti-static tubes, not tape-and-reel — factor a tube-to-tape conversion if your pick-and-place feeder expects embossed carrier tape.
This part can be designed into new production without an obsolescence clock. ROHS3 compliance is confirmed, which simplifies EU and global market compliance documentation.