LM2940T-9.0

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

The LM2940T-9.0/NOPB is a fixed-output low-dropout linear voltage regulator manufactured by Texas Instruments, designed to provide a stable 9V output with a maximum load current of 1A. It operates within an input voltage range up to 26V and features a typical dropout voltage of 500mV at full load. The device incorporates comprehensive protection mechanisms including thermal shutdown, overcurrent limiting, and reverse polarity protection. It is housed in a TO-220-3 through-hole package and supports an operating temperature range from -40°C to +125°C.

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

• Provides a fixed 9V regulated output suitable for powering digital logic and analog circuits requiring stable voltage rails.
• Integrates internal safety features such as thermal overload protection and current limiting to safeguard the component under fault conditions.
• Capable of delivering high output current while maintaining regulation with minimal voltage drop across the device.

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

• Power supply sections for microcontroller-based embedded systems
• Voltage regulation for industrial control modules
• Biasing stages in communication equipment

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

Verify the complete part number suffix, specifically /NOPB, which indicates lead-free compliance and RoHS adherence. Confirm the package type corresponds to TO-220-3 for through-hole mounting requirements. Ensure the specific output voltage variant matches the design need, as the LM2940 series offers multiple fixed voltage options.

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

Select this component when a robust, high-current LDO is required for applications involving significant input-to-output voltage differentials. The TO-220 package facilitates effective heat dissipation for continuous 1A operation. Consider the minimum input voltage requirement relative to the 9V output to ensure proper regulation margin during operation.

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

This component belongs to the LM2940 family of adjustable and fixed low-dropout regulators known for their high reliability and wide input voltage range. The 'T' designation identifies the TO-220 through-hole package variant, distinguishing it from surface-mount options like the CS or IMPX series within the same functional family.

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

Direct pin-compatible substitutes include other LM2940 variants with identical output voltages but different packages, such as LM2940CS-9.0/NOPB (TO-263) or LM2940IMPX-9.0/NOPB (SOT-223). Verify thermal performance differences when substituting surface-mount versions for through-hole designs.