LM137 and LM337 are three-terminal adjustable negative voltage regulators with output voltage adjustable down to VREF, 1.5A guaranteed output current, 0.3%/V typical load regulation, 0.01%/V typical line regulation, constant current limit with temperature, 77dB ripple rejection, standard 3-lead transistor packages, excellent thermal regulation: 0.002%/V and 50ppm/°C temperature coefficient
This document provides a comprehensive technical overview of the LM137 and LM337 series, which are three-terminal adjustable negative voltage regulators. These devices are capable of supplying in excess of 1.5 A over an output voltage range of -1.2 V to -37 V. The regulators are designed for ease of use, requiring only two external resistors to set the output voltage, and feature full overload protection including current limit, thermal overload, and safe area protection integrated on the chip.
| Output voltage range | -1.2 V to -37 V |
|---|---|
| Output current | 1.5 A |
| Load regulation | 0.3%/V typical |
| Line regulation | 0.01%/V typical |
| Ripple rejection | 77 dB |
The regulators are capable of supplying an output voltage in the range of -1.2 V to -37 V.
The regulators require only two external resistors to set the output voltage.
The device provides a guaranteed output current of 1.5 A.
The typical ripple rejection ratio is 77 dB.