TILM337T/NOPB
Overview
The LM337T/NOPB is a classic 3-terminal adjustable negative voltage regulator capable of supplying in excess of 1.5A over an output voltage range of -1.2V to -37V. It requires only two external resistors to set the output voltage and one output capacitor for frequency compensation and stability. This device features internal current limiting, thermal shutdown, and safe area compensation, making it robust against common fault conditions.
Why Choose This Part
The LM337T/NOPB is prized for its ease of use and thermal stability, offering better regulation than many integrated fixed-voltage counterparts. Its internal protection circuitry ensures the device is nearly blowout-proof by limiting power dissipation during overloads. The TO-220 package allows for straightforward heatsinking to manage high power dissipation in high-differential voltage applications.
Applications
Getting Started
When designing with the LM337T/NOPB, ensure a 1uF tantalum or 10uF aluminum electrolytic capacitor is placed on the output to maintain stability. Always calculate the power dissipation as (Vin - Vout) * Iout and ensure adequate heatsinking for the TO-220 package if the dissipation exceeds 1W. Use high-quality metal film resistors for the adjustment network to minimize voltage drift over temperature.
