L4949ED013TR

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

The L4949ED013TR is a monolithic integrated 5V voltage regulator in an SO-8 package, designed for microcomputer systems. It operates with a DC supply voltage range of 5 V to 28 V and withstands transient voltages up to 40 V. The device provides an output current capability of up to 100 mA with a dropout voltage less than 0.5 V. Key electrical characteristics include a standby quiescent current of typically 300 µA and a high-precision standby output voltage tolerance of ±1%. It integrates a power-on reset circuit with programmable delay and a voltage sense comparator.

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

• Integrates a very low dropout voltage regulator with high precision 5V output
• Includes a power-on reset circuit with externally programmable pulse delay
• Features a voltage sense comparator for input supervision
• Provides thermal shutdown and short-circuit protection

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

• Microcomputer controlled systems
• Automotive applications
• Power-on reset generation
• Input voltage supervision

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

Verify component authenticity through authorized STMicroelectronics distributors or certified partners. Confirm the specific order code matches the required package variant. Check for ECOPACK environmental compliance grades if applicable. Ensure storage conditions adhere to specified temperature ranges to maintain integrity. Review the latest datasheet revision for any updates to electrical specifications or pin configurations before finalizing procurement.

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

Select this component when a stable 5V rail is required for automotive or industrial microcontrollers. The low dropout characteristic supports operation from varying input sources. The integrated reset function simplifies system startup sequencing. The sense comparator allows for monitoring input voltage levels without external logic. Consider the SO-8 package constraints for thermal management and board space limitations during design integration.

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

This part belongs to the L4949E family of multifunction regulators. It is specifically the tape and reel version of the SO-8 packaged device. The family is designed for robust performance in electrically noisy environments typical of automotive electronics. Other variants in the series may offer different packaging options such as tubes or wider packages like SO-20W.

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

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs by comparing absolute maximum ratings and pinout definitions. Ensure that any alternative component meets the same dropout voltage and reset threshold requirements.