L4995J

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

The L4995JTR is a monolithic integrated positive fixed linear voltage regulator from the L4995 family, manufactured by STMicroelectronics. It provides a fixed 5V output with a maximum current of 500mA in a PowerSSO-12 package. The device operates within an input voltage range of 5.6V to 31V and features a low dropout voltage of 0.5V at 400mA. Key electrical parameters include a quiescent current of 160µA, PSRR of 55dB at 100Hz, and line/load regulation of 25mV. It is AEC-Q100 qualified for automotive use and supports junction temperatures from -40°C to 150°C.

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

• Integrates watchdog timer, enable control, and externally programmable reset circuits for microprocessor system management.
• Utilizes a p-channel MOS output element to ensure regulation stability regardless of input voltage transients up to 40V.
• Includes thermal shutdown and short-circuit protection mechanisms to safeguard against extreme power dissipation.

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

• Supplying power to microprocessor systems in automotive applications.
• Automotive body electronics and convenience modules.
• In-vehicle infotainment systems requiring stable 5V logic supplies.

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

Verify the specific suffix (e.g., JTR) matches the required package and tape-and-reel quantity. Confirm AEC-Q100 qualification status if automotive reliability is mandatory. Ensure the input voltage exceeds the minimum operating threshold of 5.6V for proper regulation. Check datasheet for thermal derating curves relevant to the PowerSSO-12 package under expected load conditions.

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

Select this component when a fixed 5V output with 500mA capability is required alongside integrated system management features like watchdog and reset. The P-channel architecture offers lower dropout compared to NPN-based LDOs. Consider the PowerSSO-12 package for space-constrained PCB layouts. Verify that the application environment falls within the specified -40°C to 150°C operating temperature range.

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

The L4995JTR belongs to the L4995 family of automotive-grade low-dropout regulators. This family includes variants with different pin counts (12-pin and 24-pin packages) and feature sets, such as the L4995A with external enable/reset and L4995R with external reset. All variants share the core 5V/500mA regulation capability and robust protection features designed for harsh automotive environments.

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

Direct substitutes within the same family include L4995AKTR, L4995RJTR, and L4995AJTR, which offer similar electrical characteristics but may differ in package type or specific control features. Verify pin compatibility and feature set alignment before substitution.