LM317MDT/NOPB

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

The LM317MDT/NOPB is a three-terminal adjustable positive linear voltage regulator manufactured by Texas Instruments. It operates within an input voltage range of 4.2V to 40V, delivering a maximum output current of 1.5A. The device provides an adjustable output voltage spanning from 1.25V to 37V. Key electrical specifications include a typical line regulation of 0.01% per volt and a load regulation of 0.1% per ampere. The component features a quiescent current of 4mA and supports operation at temperatures up to 125°C. It is housed in a surface-mount TO-252 package with three pins.

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

• Integrated comprehensive overload protection including internal current limiting, thermal shutdown, and safe area protection mechanisms.
• Maintains stable performance even if the adjustment terminal becomes disconnected during fault conditions.
• Offers superior line and load regulation characteristics compared to standard fixed linear regulators.

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

• Local point-of-load regulation for embedded systems
• Programmable output power supplies
• High-performance linear regulator architectures

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

Verify the specific suffix designation against the manufacturer's official documentation to confirm RoHS compliance and lead-free status. Ensure the ordering part number matches the exact package type and temperature grade required for the design. Cross-reference the datasheet revision history to validate parameter consistency before finalizing procurement specifications.

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

Select this component when a robust, high-current adjustable regulator is required in a surface-mount form factor. The TO-252 package facilitates efficient thermal dissipation for 1.5A applications. Consider the minimum dropout voltage requirements relative to the input supply headroom. Evaluate the thermal resistance characteristics of the PCB layout to ensure junction temperatures remain within the specified operational limits under maximum load conditions.

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

This device belongs to the LM317 family of three-terminal adjustable regulators produced by Texas Instruments. The NOPB suffix indicates that the component is lead-free and RoHS compliant. The MDT designation specifically identifies the surface-mount TO-252 (DPAK) package variant, distinguishing it from through-hole or other surface-mount options within the same functional family.

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

Direct pin-compatible replacements may include other manufacturers' LM317 variants in TO-252 packages. Verify thermal performance and current handling capabilities match the original design requirements. Check for any differences in line/load regulation specifications or protection threshold values that might affect circuit stability.