TPS7A5301QRGRRQ1

Texas Instruments TPS7A5301QRGRRQ1 – TPS7A53-Q1 3‑A Adjustable Automotive LDO Regulator (VQFN‑20)

The Texas Instruments TPS7A5301QRGRRQ1 is an automotive‑qualified, low‑dropout (LDO) linear regulator designed to deliver up to 3 A of clean, stable power for demanding point‑of‑load rails. As part of TI’s TPS7A53‑Q1 series, it offers an adjustable output from 0.8 V to 5.15 V in a compact 20‑pin VQFN (RGR) package with an exposed thermal pad. This combination of high current capability, low noise, and AEC‑Q100 qualification makes it a strong fit for power delivery in infotainment, ADAS, cameras, sensors, and MCU/FPGA core rails across automotive platforms.

Brand / Manufacturer: Texas Instruments
MPN: TPS7A5301QRGRRQ1 (TPS7A53‑Q1 series)
Category: Linear Regulators (LDO)
Package: 20‑VQFN (RGR), 5 x 5 mm, exposed pad; Tape & Reel
Mounting Type: Surface‑mount (SMD/SMT)
Pin Count: 20

At‑a‑Glance: Why Engineers Choose TPS7A5301‑Q1

3‑A continuous output current for robust point‑of‑load rails
Adjustable output voltage from 0.8 V to 5.15 V using external resistors
Low‑noise, high‑performance regulation suitable for sensitive analog and high‑speed digital domains (as stated in part description)
Automotive AEC‑Q100 qualification; Grade 1 temperature: −40°C to +125°C
Compact 5 x 5 mm VQFN‑20 (RGR) with exposed pad for efficient heat spreading
RoHS compliant
Part of the TPS7A53‑Q1 series for design continuity across platforms

Where This LDO Fits Best in Automotive Designs

LDOs are often the preferred final stage in a multi‑rail power tree because they deliver low output noise and excellent transient behavior with minimal components. The TPS7A5301QRGRRQ1 is optimized for:

Automotive point‑of‑load regulation
MCU/FPGA core and I/O rails
Infotainment and ADAS subsystems
Cameras and sensors power rails

In practice, you might employ a DC/DC converter to step down from the vehicle battery or intermediate bus, then use the TPS7A5301‑Q1 to clean up ripple and supply a quiet rail to a processor core, high‑speed SerDes, camera sensor, or precision analog front end. Its 3‑A capability provides margin for dynamic loads and inrush events, while the adjustable 0.8–5.15 V range covers a broad set of logic and analog voltages used in today’s vehicles.

Specifications

The following specifications are derived from the provided part data. Items not explicitly listed should be verified against the official TI datasheet.

Electrical

Regulator type: Low‑dropout linear regulator (LDO)
Output type: Adjustable
Output voltage range: 0.8 V to 5.15 V
Maximum output current: 3 A
Noise / PSRR: Low‑noise per description (numerical details not specified in provided data)
Input voltage range: Not specified in provided data
Dropout voltage: Not specified in provided data
Output accuracy: Not specified in provided data
Protection features (OVP/OCP/TSD/UVLO): Not specified in provided data

Mechanical and Packaging

Package: VQFN‑20 (RGR), 5 x 5 mm
Exposed thermal pad: Yes (enhances thermal performance and grounding)
Pin count: 20
Mounting: Surface‑mount (SMD/SMT)
Packaging: Tape & Reel (TR)

Environmental and Reliability

Automotive qualification: AEC‑Q100
Operating junction or ambient temperature range: −40°C to +125°C (Automotive Grade 1)
Moisture sensitivity level (MSL): Not specified in provided data

Compliance

AEC‑Q100: Automotive qualified
RoHS: RoHS compliant device

Design Considerations and Best Practices

Designing a robust 3‑A LDO rail in a 5 x 5 mm VQFN requires attention to both electrical stability and thermal performance. The following practical guidance can help you achieve first‑pass success:

Headroom and Thermal Budget

LDOs require voltage headroom (VIN − VOUT) to regulate. The exact dropout voltage for the TPS7A5301‑Q1 is not specified in the provided data; consult the datasheet to ensure sufficient headroom across temperature and load.
Power dissipation equals (VIN − VOUT) × IOUT. At 3 A, even modest headroom can generate significant heat; rely on the exposed pad to spread heat into the PCB. Evaluate worst‑case ambient, airflow, copper area, and thermal vias.
Plan for derating at elevated temperatures. The Grade 1 rating (−40°C to +125°C) supports harsh environments, but continuous full‑load operation at high ambient may require additional copper area or reduced load.

PCB Layout for Stability and Thermal Performance

Place input and output capacitors close to the IC pins, using low‑impedance routes to minimize loop area.
Connect the exposed pad solidly to a ground plane with an array of thermal vias. This reduces junction temperature and improves EMI performance.
Keep feedback sense lines away from noisy switch nodes (if used post‑DC/DC) and route them as short, clean traces to minimize pickup.

Capacitor Selection and Stability

Output capacitor value/ESR requirements are regulator‑specific. The exact stability criteria are not provided here; consult the TI datasheet for recommended capacitance ranges, ESR limits, and placement guidelines.
Ceramic capacitors are common in automotive PoL rails; verify derating at operating bias and temperature, and confirm ripple current ratings.

Sequencing and System Integration

If powering sensitive processors, review sequencing needs relative to other rails. Enable pins, power‑good signals, or soft‑start behavior (if present) must be verified in the datasheet; these are not specified in the provided data.
Consider upstream DC/DC converter ripple and transient response. An LDO such as TPS7A5301‑Q1 can clean up residual ripple, but ensure the input remains within specified limits under all operating conditions.

Applications in Detail

Infotainment head units and digital clusters: Clean rails for audio codecs, DSPs, and high‑speed interfaces improve user experience and reduce audible artifacts.
ADAS ECUs: Stable, low‑noise rails for vision processors, sensor fusion SoCs, and radar or lidar subsystems can improve detection fidelity.
Cameras and sensors: Image sensors often demand quiet bias rails to minimize image noise; the adjustable 0.8–5.15 V range accommodates common sensor and serializer/deserializer voltages.
MCU/FPGA rails: Many microcontrollers and FPGAs require multiple rails (core, I/O, analog). The 3‑A headroom supports bursty compute loads and helps simplify power trees.

When selecting the exact output voltage, calculate the feedback resistor divider per the datasheet guidance and verify tolerance stack‑ups (resistors, reference, and temperature effects) against system limits.

Lifecycle, Ordering, and Availability

Lifecycle status: Active (per provided data)
Manufacturer: Texas Instruments
Series: TPS7A53‑Q1
Orderable MPN: TPS7A5301QRGRRQ1
Package: 20‑VQFN (RGR), 5 x 5 mm, exposed pad; Tape & Reel
Inventory status (this listing): 0 units currently in stock
Replacements: None listed in provided data
Approved alternates: None listed in provided data

Sourcing guidance:

For automotive builds, procure through authorized distributors to ensure traceability, date code control, and compliance documentation.
When inventory is tight, consider forecast alignment and NCNR terms typical of automotive supply chains. Engage TI or authorized channels early for volume planning.
Because this device is AEC‑Q100 qualified and Grade 1 rated, confirm that your PPAP and documentation needs are met by the supplier (PPAP availability is not specified in the provided data—consult TI if required).

Compliance and Quality Notes

AEC‑Q100 automotive qualification supports use in on‑vehicle electronics, subject to system‑level validation.
RoHS compliance facilitates global shipments and environmental requirements.
Additional environmental or functional safety certifications (e.g., ISO 26262 support artifacts) are not specified in the provided data. If needed, contact TI to confirm availability.

Practical Selection Checklist

Output voltage: 0.8–5.15 V; verify headroom from upstream bus and maintain regulation across all temperatures.
Load current: Up to 3 A; confirm transient requirements and peak/burst loads.
Thermal solution: Ensure adequate copper under the exposed pad, with thermal vias to internal planes; validate with simulation or bench testing.
Noise sensitivity: If rails power ADCs, sensors, SerDes, or RF blocks, verify noise/PSRR data in the datasheet against system needs.
BOM and layout: Select capacitors per datasheet recommendations; place them tightly to the pins and keep feedback clean.
Compliance and grade: AEC‑Q100, Grade 1 operation from −40°C to +125°C; confirm your program’s derate policies.

Key Advantages for Engineers and Sourcing Managers

Consolidates power integrity and thermal performance in a small 5 x 5 mm footprint, reducing board area while supporting substantial current.
Adjustable output covers a wide range of rails, enabling platform reuse across multiple ECU variants.
Automotive qualification and RoHS compliance simplify global sourcing and regulatory alignment.
TI’s TPS7A53‑Q1 family heritage enables consistency in documentation and layout practices across product variants.

Frequently Asked Questions (FAQs)

Q: What is the output voltage range of the TPS7A5301‑Q1?
A: Adjustable from 0.8 V to 5.15 V using external feedback resistors.
Q: How much load current can this regulator supply?
A: Up to 3 A continuous, subject to thermal conditions and input/output voltage differential.
Q: What package does TPS7A5301QRGRRQ1 use?
A: 20‑pin VQFN (RGR) with exposed thermal pad, 5 mm × 5 mm, supplied in Tape & Reel.
Q: Is the device automotive‑qualified?
A: Yes. It is AEC‑Q100 qualified and rated for −40°C to +125°C (Grade 1).
Q: Is it RoHS compliant?
A: Yes, it is listed as RoHS compliant in the provided data.
Q: What is the input voltage range and dropout voltage?
A: Not specified in the provided data. Refer to the TI datasheet for exact limits and typical values.
Q: Are there recommended output capacitors for stability?
A: Capacitor requirements are regulator‑specific and not provided here. Consult the datasheet for value and ESR recommendations.
Q: Are there pin‑compatible alternatives or replacements?
A: No replacements or alternates are listed in the provided data. Check TI’s product page for up‑to‑date guidance.
Q: Can it be used behind a switching regulator to reduce ripple?
A: Yes, that is a common use case for LDOs in power trees. Ensure the upstream converter’s output stays within the LDO’s input limits and that thermal dissipation is acceptable.

Resources

TI Product Page: https://www.ti.com/product/TPS7A53-Q1
TI Datasheet (TPS7A53‑Q1 family): https://www.ti.com/lit/ds/symlink/tps7a53-q1.pdf

Summary

The Texas Instruments TPS7A5301QRGRRQ1 is a versatile, automotive‑qualified LDO regulator that brings together 3‑A current capability, low noise, and a space‑saving 5 x 5 mm VQFN‑20 package. Its adjustable 0.8–5.15 V output makes it adaptable to a wide range of rails—ideal for camera and sensor supplies, MCU/FPGA cores, and high‑speed digital subsystems in infotainment and ADAS. With AEC‑Q100 qualification, Grade 1 temperature range, and RoHS compliance, it aligns well with global automotive requirements. While some electrical details (such as dropout voltage and exact capacitor stability ranges) are not specified in the provided data, the official TI datasheet fills those gaps and should be your reference for final design. For sourcing teams, the device is active, orderable as TPS7A5301QRGRRQ1 in Tape & Reel, and supported by TI’s established automotive supply chain—making it a strong candidate for platforms requiring reliable, low‑noise point‑of‑load regulation.