TPS72301QDBVRQ1

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

The TPS72301QDBVRQ1 is an automotive-grade, negative-output low-dropout linear regulator from Texas Instruments. It provides a fixed output voltage of -2.5 V with a maximum continuous output current of 200 mA. The device operates within an input voltage range of -10 V to -2.7 V and maintains a typical power supply rejection ratio (PSRR) of 48 dB. Quiescent current is specified at 2 uA, while the operating supply current is 130 uA. Line regulation is rated at 0.04 %/V and load regulation at 0.002 %/mA. The unit is housed in a SOT-23-5 package and supports junction temperatures from -40°C to +125°C.

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

• Automotive qualification compliant with AEC-Q100 standards for reliability
• Negative polarity output configuration suitable for dual-supply systems
• Ultra-low quiescent current operation for battery-powered applications
• Integrated protection against overcurrent, thermal overload, and short circuits

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

• Automotive infotainment system power rails
• Sensor biasing in automotive environments
• Dual-supply operational amplifier circuits
• Negative voltage generation for mixed-signal automotive ICs

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

Verify that the specific suffix 'Q' confirms AEC-Q100 automotive qualification status as per official documentation. Confirm the fixed -2.5 V output variant matches the design requirement, as other voltage options exist within the family. Ensure the SOT-23-5 package footprint aligns with the PCB layout specifications before finalizing procurement.

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

Select this component when a stable negative voltage rail is required for automotive electronics. The low quiescent current makes it suitable for standby modes. Verify that the input voltage remains within the -10 V to -2.7 V window to ensure proper regulation. Consider the 200 mA current limit when sizing the load to prevent triggering internal protection mechanisms.

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

This part belongs to the TPS723 series of low-noise, high-PSRR negative LDO regulators. It complements positive-output variants like the TPS72301 by providing complementary negative rails. The Q1 suffix denotes automotive grade, distinguishing it from standard industrial parts. It serves as a dedicated solution for generating negative voltages in compact automotive designs.

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

TPS72325QDBVRQ1: Alternative fixed -2.5 V output in the same automotive series.