L4949EDTR-E

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

The L4949EDTR-E is a monolithic integrated 5V low-dropout voltage regulator manufactured by STMicroelectronics. It operates within an input voltage range of 5 V to 28 V, with transient supply voltage support up to 40 V. The device provides a fixed positive output with a maximum current capability of 100 mA and maintains a dropout voltage of less than 0.5 V at full load. It features extremely low quiescent current in standby mode and includes built-in protections such as thermal shutdown and short-circuit protection.

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

• Integrates power-on reset circuitry with programmable pulse delay via external capacitor
• Includes voltage sense comparator for input monitoring
• AEC-Q100 qualified for automotive reliability standards
• Provides high-precision 5V ±1% standby output voltage

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

• Supplying microcomputer-controlled systems in automotive environments
• Power management for embedded controllers requiring stable 5V rails
• Systems necessitating input voltage detection and reset generation

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

Verify the specific suffix 'EDTR' corresponds to the SOIC-8 package and reel packaging configuration required for your assembly line. Confirm that the component status aligns with your design lifecycle needs, as availability may vary. Ensure compatibility with your PCB footprint and reflow soldering profiles specified for SOIC-8 packages.

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

Select this component when a fixed 5V output with integrated reset and voltage sensing is required in a compact surface-mount package. It is suitable for designs needing AEC-Q100 compliance and low standby current consumption. Consider the SOIC-8 form factor for space-constrained applications where thermal performance and protection features are critical.

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

This part belongs to the L4949Ex-E family of multifunction very low drop voltage regulators. The series is designed specifically for automotive and industrial applications, combining linear regulation with digital control functions like reset generation and voltage monitoring in a single monolithic IC.

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

The L4949EPTR-E serves as a pin-compatible alternative within the same family, offering identical electrical characteristics but housed in a 20-SOIC package instead of SOIC-8. Verify package dimensions and pinout compatibility before substitution.