LM2990T-5.0/NOPB

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The LM2990T-5.0/NOPB is a negative low-dropout (LDO) voltage regulator manufactured by Texas Instruments, designed for applications requiring stable negative voltage rails. It provides a fixed output of -5 V with a maximum load current capability of 1 A. The device operates within an input voltage range from 6.25 V to 26 V and maintains regulation with a typical dropout voltage of 500 mV at full load. It features a quiescent current of approximately 10 mA and is housed in a TO-220 package suitable for through-hole mounting.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Provides a fixed negative output voltage for power supply circuits
• Capable of delivering up to 1 A of continuous load current
• Operates reliably with a low dropout voltage under heavy loads

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Negative rail generation in dual-supply electronic systems
• Power conditioning for operational amplifiers and analog circuits
• General-purpose linear voltage regulation in industrial equipment

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix 'NOPB' confirms lead-free and RoHS compliance status as per the manufacturer's latest documentation. Ensure the ordering part number matches the required negative polarity and fixed -5 V output specification. Confirm that the TO-220 through-hole package aligns with the target PCB footprint and thermal management requirements before finalizing procurement.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a stable negative voltage source is required for analog or mixed-signal circuits. It is appropriate for designs needing high current capacity with minimal heat dissipation compared to standard regulators. Consider the input voltage headroom relative to the dropout characteristics to ensure proper regulation across the entire operating temperature range.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This device belongs to the LM2990 series of negative LDO regulators from Texas Instruments. It serves as a complement to positive LDO families like the LM2940, providing symmetrical power solutions. The series is characterized by robust performance in industrial and commercial environments, offering reliable regulation for sensitive downstream components requiring precise negative voltage references.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data.