L4989MD013TR

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

The L4989MD013TR is an automotive-grade, low-power voltage regulator manufactured by STMicroelectronics. It provides a fixed 5 V output with a maximum current of 150 mA. The device operates within a DC supply voltage range of 5.6 V to 31 V and features a typical dropout voltage of 180 mV at full load. It includes integrated reset circuitry and a programmable watchdog timer for microprocessor system protection. Qualified under AEC-Q100 standards, it supports junction temperatures from -40°C to 150°C.

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

• Integrates a p-channel MOS output regulating element for efficient voltage regulation across wide input transients.
• Includes built-in reset circuit sensing output voltage down to 1 V with programmable delay via external capacitor.
• Features a programmable watchdog timer activated when the Enable pin is high, enhancing system reliability.
• Provides thermal shutdown and short-circuit protection to safeguard against extreme power dissipation.

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

• Supplying microprocessor systems in automotive applications
• Automotive electronic control units requiring stable 5 V logic power
• Systems needing integrated reset and watchdog functionality

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

Verify the specific suffix '013TR' corresponds to the tape-and-reel packaging configuration required for your assembly line. Confirm that the SO-20 package dimensions align with your PCB footprint design. Ensure the component meets AEC-Q100 qualification requirements for your specific automotive grade application before finalizing procurement.

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

Select this component when a fixed 5 V output with 150 mA capability is required in an automotive environment. It is suitable for designs needing integrated safety features like watchdogs and resets without external components. Consider the SO-20 package size and the 5.6 V minimum input voltage constraint during initial schematic capture.

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

This part belongs to the L4989M family of monolithic integrated voltage regulators designed specifically for automotive use. The series is characterized by its ability to handle input voltage transients up to 40 V while maintaining precise output regulation through a pre-trimmed reference voltage.

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

The L4989M is the non-tape variant of this component family. Verify if the standard tube packaging of the L4989M is acceptable as a substitute for the reel-packaged L4989MD013TR.