Texas Instruments TPS745115PQWDRBRQ1

Overview

TPS745115PQWDRBRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified 500-mA ultra-low-dropout linear regulator with power-good (PG) output, fixed 1.15-V output, 2-mm × 2-mm wettable-flank WSON-6 package, ±0.85% output accuracy at 25°C, and 160-mV max dropout at 500 mA - used for powering ADAS camera sensor rails and infotainment SoC core supplies.

For engineers reviewing the TPS745115PQWDRBRQ1 datasheet, TPS745115PQWDRBRQ1 pinout, TPS745115PQWDRBRQ1 application, or TPS745115PQWDRBRQ1 equivalent, key selection criteria include automotive-grade thermal performance (–40°C to +125°C ambient), wettable-flank optical inspection support, PG timing options (135–178 µs rising), and compatibility with 1-µF ceramic output capacitors.

Technical Context

The TPS745115PQWDRBRQ1 implements a precision band-gap reference and error amplifier to achieve ±0.85% output accuracy at 25°C and ±1.5% over full temperature range. Its internal foldback current limit reduces thermal dissipation during short-circuit events, while integrated UVLO (1.17–1.42 V) and thermal shutdown (170°C trip) ensure robust fault protection.

It supports both open-drain and push-pull PG configurations - with PG high threshold at 92% VOUT and hysteresis of 2% - enabling reliable power sequencing in multi-rail automotive systems. The device operates across 1.5 V to 6.0 V input and delivers stable regulation with only 1 µF COUT, leveraging low-ESR ceramic capacitors for minimal board area.

Key Specifications

Pinout & Package

TPS745115PQWDRBRQ1 uses a 6-pin, 2.0 mm × 2.0 mm wettable-flank WSON package (DRV variant) with exposed thermal pad electrically connected to GND. This package supports automated optical inspection (AOI) of solder joints and achieves RθJA = 80.3°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with TPS744115PQWDRBRQ1 and TLV767115DRVR, the TPS745115PQWDRBRQ1 uniquely combines AEC-Q100 Grade 1 qualification, 500-mA output, active discharge, and PG functionality in a wettable-flank WSON-6 - making it the only drop-in solution for safety-critical camera and radar power domains.

Availability

TPS745115PQWDRBRQ1 is available at Aetrix Electronics and suitable for automotive front camera modules, instrument cluster displays, and radar signal processor supplies requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant traceability.

Supply support for TPS745115PQWDRBRQ1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company delivering analog and embedded processing solutions, with leadership in power management ICs and automotive electronics.

The TPS745-Q1 product line delivers ultra-low-dropout regulators with power-good monitoring and wettable-flank packaging specifically for ADAS, infotainment, and body electronics applications demanding AEC-Q100 compliance and high reliability.

FAQ

What is the maximum input voltage rating for the TPS745115PQWDRBRQ1?

The TPS745115PQWDRBRQ1 has an absolute maximum input voltage rating of 6.5 V, with recommended operating input range from 1.5 V to 6.0 V. Exceeding 6.5 V risks permanent damage. Operation above 6.0 V is not supported per datasheet specifications, and UVLO activates below 1.17 V to prevent unstable regulation.

Does the TPS745115PQWDRBRQ1 require an external feedback resistor network?

No, the TPS745115PQWDRBRQ1 is a fixed-output variant with internal resistor divider setting VOUT to 1.15 V; the FB pin is not accessible externally. Unlike adjustable versions, no external resistors are needed - simplifying layout and reducing BOM count for production automotive designs.

What PG output configuration does the TPS745115PQWDRBRQ1 support?

The TPS745115PQWDRBRQ1 supports both open-drain and push-pull PG outputs. For push-pull operation (enabled by default in this variant), no external pull-up resistor is required. PG asserts high when VOUT reaches ≥92% of 1.15 V and deasserts low at ≤90%, with 2% hysteresis to prevent chatter.

Can the TPS745115PQWDRBRQ1 operate with less than 1 µF output capacitance?

No - the TPS745115PQWDRBRQ1 requires a minimum of 1 µF ceramic output capacitor for stability, as specified in the Recommended Operating Conditions table. Using less capacitance may cause oscillation or poor transient response, especially under 500-mA load steps common in camera and radar applications.

Is the thermal pad of the TPS745115PQWDRBRQ1 electrically connected?

Yes, the exposed thermal pad on the TPS745115PQWDRBRQ1 is electrically connected to the GND node. It must be soldered to a PCB GND plane to achieve the rated RθJA = 80.3°C/W and ensure safe operation at full 500-mA load across –40°C to +125°C ambient conditions.