L4949EDTRWTR

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

The L4949EDTRWTR is a monolithic low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a fixed 5V output with a maximum current of 100mA. The device operates within an input voltage range of 5V to 28V and features a typical dropout voltage of 300mV at full load, with a maximum of 500mV. It includes integrated power-on reset generation and an input voltage sense comparator. The component is housed in an 8-SOIC package and supports surface-mount installation.

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

• Integrates a power-on reset function for system initialization management
• Includes an input voltage sense comparator for monitoring supply levels
• Provides low dropout performance for efficient voltage regulation
• Monolithic design combines regulation and auxiliary functions in one package

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

• Embedded systems requiring stable 5V logic supplies
• Circuits needing input voltage monitoring via the sense comparator
• Applications utilizing automatic power-on reset sequencing

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

Verify the specific suffix 'WTR' against the manufacturer's official documentation to confirm tape-and-reel packaging details and environmental compliance status. Ensure the selected variant matches the required operating temperature range and pin configuration for your PCB layout. Cross-reference the part number with the latest datasheet revision to avoid discrepancies in electrical specifications or package dimensions during procurement.

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

Select this component when a fixed 5V output is required alongside integrated reset and sensing capabilities. It is suitable for designs where board space is limited due to its monolithic integration. Consider the 100mA output current limit and the 28V maximum input voltage when defining power requirements. Verify that the SOIC-8 package fits the available footprint and thermal constraints of the target application.

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

This part belongs to the L4949E series of low-dropout regulators from STMicroelectronics. The series is characterized by the combination of voltage regulation with additional system management functions like reset generation and input sensing. These devices are designed to simplify circuit design by reducing the component count needed for power management and system control tasks.

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

Check for L4949EDTR-E as a potential alternative with similar electrical characteristics but verify package and suffix differences. Confirm compatibility with L4949EPTR-E if a different package type is acceptable. Always validate pinouts and electrical parameters against the original datasheet before substitution.