Negative rail regulation with 77 dB line rejection
The LM337KTTR is a negative adjustable voltage regulator from Texas Instruments. It delivers up to 1.5 A output current with an adjustable output from -1.2 V down to -37 V. That rejection figure holds at the line-frequency fundamental where bulk-capacitor ESR starts to matter.
1.5 A output and thermal budget in DDPAK
Rated for 1.5 A continuous output, this part handles moderate-load negative rails — op-amp supplies, small motor drives, or local post-regulation. Input voltage maximum is -40 V, output maximum is -37 V. The minimum dropout is not listed here, but the adjustable range from -1.2 V means the regulator can produce a clean -1.2 V rail from a -3 V or -5 V input — useful for splitting a bipolar supply.
Built-in over-temperature and short-circuit protection are standard for this regulator class.