LM337 Adjustable Negative Voltage Regulator IC

The LM337 is an adjustable negative voltage regulator IC, used to produce a stable, user-adjustable negative output voltage from a negative input supply — the negative-rail counterpart to the popular LM317 positive regulator.

Like its positive-voltage sibling, the output voltage is set using an external resistor divider network, giving flexibility to target a specific negative rail voltage for a given circuit design.

Commonly used alongside an LM317 to build dual-rail (positive/negative) power supplies for op-amp circuits, audio equipment, and other designs requiring symmetric supply voltages.

Features:

1. Adjustable negative output voltage regulator
2. Set via external resistor divider
3. Negative-rail counterpart to LM317
4. Suited for dual-rail power supply designs
5. Common in op-amp and audio circuit power supplies