TPS75818KTTTG3

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

The TPS75818KTTTG3 is a fixed-output low-dropout (LDO) voltage regulator manufactured by Texas Instruments. It provides a fixed output voltage of 1.8V with a maximum continuous output current of 3A. The device supports an input voltage range up to 5.5V and operates within a junction temperature range of -40°C to 125°C. Key electrical specifications include a typical quiescent current of 200 µA and a power supply rejection ratio (PSRR) of 62dB at 100Hz. It is housed in a TO-263 (DDPAK-5) surface-mount package.

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

• Provides stable 3A output current capability for high-power applications
• Features fast transient response to handle rapid load changes
• Includes comprehensive protection mechanisms such as overcurrent, thermal shutdown, reverse polarity, and UVLO

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

• Point-of-load regulation in embedded systems
• Power distribution networks for digital logic circuits
• Biasing stages in communication equipment

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

Verify the complete part number including the suffix 'G3' to ensure RoHS compliance and lead-free status. Confirm the package type matches the design requirements, specifically the TO-263 (DDPAK-5) footprint. Check the datasheet for specific thermal resistance values relevant to your PCB layout and ambient operating conditions to ensure adequate heat dissipation.

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

Select this component when a fixed 1.8V rail is required with up to 3A current capacity. Consider the 5.5V maximum input voltage limit during system design. Evaluate the thermal performance based on the expected voltage drop and load current. Ensure the application does not require adjustable output voltages, as this variant is fixed.

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

This device belongs to the TPS758xx family of fast-transient response LDO regulators from Texas Instruments. The family shares similar architectural features but varies in output voltage configurations. The TPS75818KTTTG3 specifically denotes the 1.8V fixed output version with tape-and-reel packaging and environmental compliance.

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

Direct substitutes within the same family include other fixed voltage variants like TPS75815 or TPS75825 if the output voltage requirement differs. For adjustable output needs, consider the TPS75801 series. Verify pin compatibility and thermal characteristics before substitution.