LM317AEMPX/NOPB

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

The LM317AEMPX/NOPB is a three-terminal adjustable positive linear voltage regulator manufactured by Texas Instruments. It provides an output voltage range from 1.2 V to 37 V with a maximum output current of 1.5 A. The device operates within an ambient temperature range of -40°C to +125°C and utilizes a surface-mount TO-261-4 (SOT-223) package. Key electrical specifications include a typical line regulation of 0.01% per volt and load regulation of 0.1% per ampere, ensuring stable performance under varying input and load conditions.

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

• Integrated comprehensive protection circuitry including internal current limiting, thermal overload shutdown, and safe operating area protection.
• Maintains full functionality of all protection circuits even if the adjustment terminal becomes disconnected.
• Delivers superior line and load regulation performance compared to standard fixed linear regulators.

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

• On-card local voltage regulation for embedded systems
• Programmable output power supplies
• High-performance regulator architectures in consumer electronics

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

Verify the specific suffix 'NOPB' confirms lead-free and RoHS compliance status as defined by Texas Instruments. Confirm the package designation matches the required TO-261-4 footprint for PCB layout compatibility. Ensure the operating temperature grade aligns with the intended environmental constraints of the final assembly.

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

Select this component when a robust, adjustable positive regulator is required for applications demanding 1.5 A output capability in a compact surface-mount form factor. It serves as a direct replacement for legacy through-hole versions where board space is limited. Consider the thermal dissipation requirements of the SOT-223 package relative to the expected voltage drop and load current.

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

This part belongs to the LM317 family of three-terminal adjustable regulators, widely recognized for their ease of use and reliability. The LM317 series allows designers to set output voltages using only two external resistors, simplifying circuit design while providing flexibility across various industrial and commercial power management applications.

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

LM317EMP/NOPB

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

Does the device maintain protection features if the adjustment pin is open?

Yes, the internal current limit, thermal overload protection, and safe operating area protection remain functional even if the adjustment terminal is disconnected.

What is the minimum input-to-output voltage differential required?

The device typically requires a minimum input-to-output differential of approximately 2 V to maintain proper regulation, though exact values depend on load current.