Texas Instruments TPS74522PQWDRVRQ1

Overview

TPS74522PQWDRVRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive ultra-low-dropout (LDO) regulator delivering 500 mA with power-good (PG) output, fixed 2.2 V output, and housed in a 2-mm × 2-mm wettable-flank WSON-6 package. It operates from 1.5 V to 6.0 V input, achieves ±0.85% output accuracy at 25°C, supports fast load transients, and features 160 mV max dropout at 500 mA (3.3 VOUT), enabling use in space-constrained ADAS camera and cluster display rails.

For engineers reviewing the TPS74522PQWDRVRQ1 datasheet, TPS74522PQWDRVRQ1 pinout, TPS74522PQWDRVRQ1 application, or TPS74522PQWDRVRQ1 equivalent, key selection criteria include its wettable-flank WSON-6 package for automated optical inspection, automotive-grade thermal performance (RθJA = 80.3°C/W), push-pull or open-drain PG options, and functional safety documentation support for ISO 26262-compliant systems.

Technical Context

The TPS74522PQWDRVRQ1 integrates a precision band-gap reference and error amplifier to maintain tight output regulation across temperature (±1.5% over –40°C to +150°C junction), with internal foldback current limiting and thermal shutdown for robust fault protection. Its low 25 µA typical quiescent current and active output discharge enable efficient always-on subsystems.

Power-good monitoring is implemented via feedback-pin voltage comparison with programmable thresholds (PGHTH = 92% VOUT, PGLTH = 90% VOUT), supporting supply sequencing in multi-rail automotive ECUs. The device is stable with ≥1 µF ceramic output capacitance and includes undervoltage lockout (UVLO) with 1.34 V rising threshold and 40 mV hysteresis.

Key Specifications

Pinout & Package

TPS74522PQWDRVRQ1 uses the DRV (WSON-6) package: 2.00 mm × 2.00 mm body, 0.5-mm pitch, exposed thermal pad electrically connected to GND. Wettable flanks facilitate automated optical inspection of solder joints.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS74522PQWDRVRQ1, the TPS74522PQWDRBRQ1 offers superior thermal dissipation but requires PCB redesign, while the TPS7B8722QPWPRQ1 extends ambient operating range at the expense of PSRR and discharge capability - both serve distinct thermal or environmental design priorities.

Availability

TPS74522PQWDRVRQ1 is available at Aetrix Electronics and suitable for automotive front camera modules, instrument cluster displays, telematics control units, and medium-range radar sensors requiring stable component supply with AEC-Q100 compliance and traceable sourcing.

Supply support for TPS74522PQWDRVRQ1 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 leader specializing in analog and embedded processing technologies, with decades of automotive qualification expertise and broad portfolio of AEC-Q100-compliant power management ICs.

The TPS745-Q1 product line delivers ultra-low-dropout regulation with integrated power-good and functional safety support, specifically engineered for demanding automotive ADAS, infotainment, and body electronics applications.

FAQ

What is the maximum junction temperature specification for the TPS74522PQWDRVRQ1?

The TPS74522PQWDRVRQ1 has a maximum junction temperature of +150°C, validated per AEC-Q100 Grade 1 requirements for automotive operation. This rating enables reliable function in high-temperature environments such as engine compartments or under-hood ECUs, provided thermal design maintains TJ ≤ 150°C using the specified RθJA = 80.3°C/W and appropriate PCB copper area.

Does the TPS74522PQWDRVRQ1 support both push-pull and open-drain power-good outputs?

Yes, the TPS74522PQWDRVRQ1 supports both push-pull and open-drain PG configurations. The push-pull option is factory-configured for VOUT ≥ 1.0 V (including 2.2 V), eliminating the need for an external pull-up resistor. For open-drain operation, a pull-up resistor is required - refer to the datasheet's Device Nomenclature table to confirm the specific PG topology for your orderable part number.

Can the TPS74522PQWDRVRQ1 operate with input voltages below 2.2 V?

Yes, the TPS74522PQWDRVRQ1 supports input voltages from 1.5 V to 6.0 V. With a 2.2 V fixed output and 160 mV max dropout, it can operate down to VIN = 2.36 V at full 500 mA load. At lighter loads or higher temperatures, dropout increases slightly - always verify minimum VIN using the worst-case VDO curve (Figure 6-12) for your specific thermal and current conditions.

Is the TPS74522PQWDRVRQ1 compatible with 1-µF ceramic output capacitors?

Yes, the TPS74522PQWDRVRQ1 is explicitly designed to be stable with a minimum 1-µF ceramic output capacitor, as confirmed in Section 6.3 Recommended Operating Conditions. This enables compact, low-cost designs versus legacy LDOs requiring larger tantalum or aluminum electrolytic capacitors. Ensure capacitor voltage rating exceeds VOUT and X7R/X5R dielectric is used for temperature stability.

How does the TPS74522PQWDRVRQ1 implement power-good monitoring?

The TPS74522PQWDRVRQ1 monitors the feedback node internally to detect output voltage deviation. When VOUT rises above 92% of nominal (PGHTH), the PG pin asserts high (push-pull) or pulls high (open-drain with pull-up). When VOUT falls below 90% (PGLTH), PG deasserts with 2% hysteresis. This enables precise supply sequencing and fault detection in multi-rail automotive systems without external comparators.