L4995AJTR

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

The L4995AJTR is a monolithic integrated linear voltage regulator from STMicroelectronics, designed for automotive applications. It provides a fixed 5V output with a maximum current capability of 500mA. The device utilizes a P-channel MOSFET pass element to achieve low dropout voltage characteristics. It operates within an input supply voltage range of 5.6V to 31V and is qualified under the AEC-Q100 standard. The component integrates comprehensive protection features including thermal shutdown and short-circuit protection.

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

• Integrates watchdog timer and externally programmable reset circuits for system monitoring
• Features enable input for controlling voltage regulator operation states
• Includes pre-trimmed reference voltage for high output precision
• Provides protection against overtemperature conditions and short circuits

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

• Powering microprocessor systems in automotive environments
• Automotive electronic control units requiring stable 5V logic supplies
• Systems requiring integrated reset and watchdog functionality

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

Verify the specific suffix 'AJTR' corresponds to the PowerSSO-12 package and tape-and-reel packaging configuration. Confirm that the AEC-Q100 qualification status meets your project's reliability requirements. Ensure the operating junction temperature range of -40°C to 150°C aligns with your thermal design constraints. Cross-reference the datasheet revision date to ensure compatibility with your schematic symbols.

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

Select this component when a fixed 5V output at 500mA is required alongside integrated system management features. The AJ variant specifically includes both the enable pin and the externally programmable reset circuit, offering greater flexibility than variants lacking these functions. Consider the PowerSSO-12 package if space-constrained PCB layouts are necessary compared to larger 24-pin alternatives.

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

This part belongs to the L4995 family of low-dropout regulators designed for automotive use. The family shares core regulation capabilities but varies in package options (PowerSSO-12 or PowerSSO-24) and integrated peripheral features. The 'A' designation indicates the inclusion of both enable and programmable reset functions, distinguishing it from other family members like the L4995R which lacks the enable feature.

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

Direct substitutes within the same family include L4995RJTR and L4995AKTR, provided the package and feature set match the application requirements. Verify pinout compatibility before substitution.