TPS79925QDDCRQ1

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

The TPS79925QDDCRQ1 is a single-output automotive-grade low-dropout (LDO) voltage regulator manufactured by Texas Instruments. It provides a fixed 2.5 V output with a maximum continuous current of 200 mA. The device operates within an input voltage range of 2.7 V to 6.5 V and maintains a typical quiescent current of 40 uA. It features a typical power supply rejection ratio (PSRR) of 70 dB and a maximum dropout voltage of 175 mV at full load. The component is housed in a SOT-23-Thin-5 package and is qualified under AEC-Q100 standards for operation between -40°C and +125°C.

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

• Automotive qualification compliant with AEC-Q100 standards for reliability in vehicle environments
• High power supply rejection ratio to minimize noise from upstream power sources
• Low quiescent current consumption to extend battery life in portable applications
• Integrated protection mechanisms including overcurrent, thermal shutdown, and reverse polarity protection

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

• Power management for automotive electronic control units (ECUs)
• Supplying stable voltage to sensors and microcontrollers in vehicles
• Noise-sensitive analog circuit conditioning in automotive infotainment systems
• Battery-powered automotive modules requiring efficient linear regulation

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

Verify the complete part number including suffixes to ensure correct package and temperature grade alignment with design requirements. Confirm AEC-Q100 qualification status is explicitly stated in the official datasheet for the specific revision. Check for any recent product change notifications regarding assembly sites or marking updates that may affect integration. Ensure compatibility with PCB footprint specifications for the SOT-23-Thin-5 package.

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

Select this component when a fixed 2.5 V rail is required for automotive loads with currents up to 200 mA. Consider the 2.7 V minimum input voltage constraint against the system's lowest operating battery voltage. Evaluate the thermal performance in the SOT-23-Thin-5 package based on expected power dissipation. Compare PSRR requirements against other LDO families if superior noise rejection is needed for sensitive RF or audio circuits.

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

This device belongs to the TPS799 series of high-performance, low-noise LDO regulators designed for demanding applications. The 'Q' prefix indicates automotive qualification, while 'DDCR' specifies the SOT-23-Thin-5 surface-mount package and tape-and-reel packaging. It serves as a regulated power source within complex PMIC architectures or standalone voltage rails in automotive electronics.

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

Non-automotive equivalents such as TPS79925DDCR lack AEC-Q100 qualification and are unsuitable for certified automotive assemblies. Alternative packages like WSON-6 require different footprints and are not pin-compatible. Verify that substitute parts meet the same 200 mA output current and 2.5 V fixed output specifications.