L4938ND013TR

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

The L4938ND013TR is a monolithic dual linear voltage regulator from STMicroelectronics, housed in a 20-SOIC package. It provides two independent low-dropout outputs with current capabilities of 50mA and 500mA. The device supports positive adjustable or fixed output configurations, with a maximum input voltage of 28V. Key integrated features include power-on reset functionality and thermal protection. It operates within an extended temperature range of -40°C to 125°C or 150°C depending on the specific variant documentation.

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

• Dual low-dropout linear regulation architecture
• Integrated power-on reset circuit
• Thermal overload protection
• Surface-mount 20-SOIC packaging

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

• Embedded systems requiring dual voltage rails
• Automotive electronic control units
• Industrial monitoring equipment
• Consumer electronics power management

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

Verify the exact suffix (ED vs ND) as it dictates output current ratings and operating temperature ranges. Confirm RoHS compliance status, as some variants are non-compliant. Check for obsolescence notices, as certain revisions may be discontinued. Ensure the selected package matches the PCB footprint requirements for 20-SOIC components.

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

Select this component when dual isolated linear supplies are needed from a single source. Compare the 50mA/500mA split against load requirements. Consider the dropout voltage specifications at expected load currents. Evaluate the need for the integrated reset function versus external logic. Verify thermal dissipation capabilities within the target enclosure environment.

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

This part belongs to the L4938 family of dual regulators designed for robust performance in noisy environments. It serves as a power management solution for applications requiring stable voltage rails with minimal external component count. The series is commonly utilized in automotive and industrial sectors where reliability and wide temperature operation are critical.

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

NCV47411PAAJR2G by onsemi is listed as a similar alternative. Verify pin compatibility and electrical parameter alignment before substitution.