TPS79133DBVRQ1

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

The TPS79133DBVRQ1 is a single-output, fixed 3.3V low-dropout (LDO) linear regulator from the TPS791-Q1 automotive series. It delivers up to 100mA output current with a maximum dropout voltage of 90mV at full load. The device operates within an input voltage range of 2.7V to 5.5V and maintains a typical quiescent current of 250µA. It features high power supply rejection ratio (PSRR) performance ranging from 70dB at 100Hz to 37dB at 100kHz. The component is housed in a compact SOT-23-5 package and is qualified to AEC-Q100 standards for automotive applications.

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

• Automotive-grade qualification compliant with AEC-Q100 standards for reliability in vehicle electronics.
• Ultra-low noise architecture designed to minimize ripple and interference in sensitive RF circuits.
• High power supply rejection ratio (PSRR) effectively suppresses input voltage fluctuations across a wide frequency range.
• Integrated enable pin allows for precise power management and system-level control.

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

• RF front-end modules requiring clean power supplies
• Automotive infotainment systems
• Sensor power conditioning in automotive environments
• Noise-sensitive analog signal processing circuits

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

Verify that the specific part number suffix matches the required automotive grade and package variant. Confirm RoHS compliance status and check for recent Product Change Notices or End-of-Life announcements from Texas Instruments prior to finalizing procurement plans.

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

Select this component when designing for automotive environments requiring strict noise suppression and stable regulation under varying input conditions. Ensure the input voltage remains within the 2.7V to 5.5V range and verify that the thermal dissipation capabilities of the SOT-23-5 package are sufficient for the expected load current and ambient temperature.

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

This device belongs to the TPS791-Q1 family of ultralow noise LDOs. It shares architectural similarities with other members like the TPS79101 and TPS79147, differing primarily in fixed output voltage settings. The Q1 suffix denotes automotive qualification, distinguishing it from commercial variants such as the TPS79133DBVR.

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

Direct substitutes include TPS79101DBVRQ1 and TPS79147DBVRQ1 for different fixed voltages. For higher current needs, consider the TPS793 series. Verify pin compatibility and thermal characteristics before swapping.