TPS7B6950QDBVRQ1

TPS7B6950QDBVRQ1 TPS7B69-Q1 Series Automotive LDO Voltage Regulator
150mA Output Current x 40V Input — Low-IQ, High-PSRR LDO for Automotive Off-Battery Applications

TPS7B6950QDBVRQ1 Product Overview

The TPS7B6950QDBVRQ1 is a low-dropout linear regulator from Texas Instruments' TPS7B69-Q1 Series, designed to provide a stable 5V supply for automotive and industrial systems directly from a car battery or other high-voltage rails up to 40V. This fixed 5V output variant in a SOT-23-5 package is AEC-Q100 qualified, making it suitable for use in harsh automotive environments.

Rated for a maximum output current of 150 mA, it provides a fixed output voltage of 5V. The device features a low quiescent current of 15 µA typically at light loads, and a maximum of 25 µA over the full temperature range. It has a typical dropout voltage of 450 mV at a 100mA load, with a maximum dropout of 0.8V. The regulator operates across a wide input voltage range from 4V to 40V and can withstand transients up to 45V. The device offers high power supply rejection ratio (PSRR) of 60 dB at 100 Hz and includes integrated protection features such as overcurrent, thermal shutdown, short-circuit, and undervoltage lockout (UVLO). Its operating junction temperature ranges from -40°C to 150°C. The device is stable with low-ESR ceramic output capacitors ranging from 2.2 to 100 µF.

TPS7B6950QDBVRQ1 Key Specifications

TPS7B6950QDBVRQ1 Key Advantages

The TPS7B6950QDBVRQ1 employs a robust low-dropout linear regulator architecture, delivering a stable 5V rail while its ultra-low 15-µA quiescent current makes it ideal for standby and always-on systems, particularly in automotive applications. The wide input voltage range up to 40V (with 45V transients) provides direct connection to the car battery, while the 150 mA output drive capability is suitable for powering microcontrollers and sensors. The SOT-23-5 package is suitable for space-constrained PCB designs, and the integrated protection features overcurrent, thermal shutdown, and short-circuit ensure robust operation in harsh environments. The AEC-Q100 qualification confirms the device meets rigorous reliability standards for automotive applications.

TPS7B6950QDBVRQ1 Typical Applications

Engine control units (ECUs), body control modules (BCMs), and other automotive ECUs requiring a stable 5V supply from the battery
Automotive sensors, infotainment systems, and instrument clusters
Standby power supplies in automotive systems where low quiescent current is critical
Industrial power supplies and battery-powered equipment needing low-IQ regulation
Telecom and networking equipment requiring robust LDO performance
Systems requiring a regulated 5V rail from an unregulated 40V bus

Why Choose the TPS7B6950QDBVRQ1?

The TPS7B6950QDBVRQ1 combines 40V input tolerance, 150 mA output, and ultra-low 15-µA quiescent current in a compact SOT-23-5 package. Manufactured by Texas Instruments and AEC-Q100 qualified, it delivers stable, efficient, and safe power conversion for automotive and industrial applications. The 5V fixed output and integrated fault protection offer the distinct advantage of a simple, robust, and space-saving design for powering vehicle microcontrollers and sensors directly from the battery line, with minimal power drain during standby.