TPS7B6850QPWPRQ1

Texas Instruments TPS7B6850QPWPRQ1 Automotive 5-V, 500-mA LDO Regulator (HTSSOP-28 PowerPAD)

The Texas Instruments TPS7B6850QPWPRQ1 is an automotive-grade, low-dropout linear regulator that delivers a fixed 5-V rail at up to 500 mA. Part of the TPS7B68-Q1 family, this device comes in a compact HTSSOP-28 package with an exposed thermal pad (PowerPAD) for efficient heat dissipation and is supplied in tape-and-reel packaging for high-volume production. With AEC‑Q100 qualification (Q1), the TPS7B6850QPWPRQ1 is a strong fit for demanding automotive and transportation designs where reliability, thermal performance, and consistent availability matter.

Engineers will appreciate its straightforward 5-V, 0.5-A capability for powering microcontrollers, sensors, digital logic, and transceivers, while sourcing managers can rely on its active lifecycle status and automotive compliance for long-term programs. This article consolidates the key facts you need to evaluate, design in, and source the Texas Instruments TPS7B6850QPWPRQ1 efficiently.

Quick Facts and Highlights

• Brand/Manufacturer: Texas Instruments (TI)
• MPN: TPS7B6850QPWPRQ1
• Series/Family: TPS7B68‑Q1
• Category: Linear Voltage Regulators (LDO)
• Output: 5 V fixed, up to 500 mA
• Regulator Type: LDO, Fixed
• Package: HTSSOP-28 Exposed Pad (PWP), PowerPAD
• Pin Count: 28
• Mounting: Surface Mount
• Packaging: Tape & Reel (TR)
• Automotive Qualification: AEC‑Q100 (Q1)
• Operating Temperature Range: −40°C to 125°C
• Lifecycle Status: Active
• Applications: Automotive systems

Resources:

• Datasheet: https://www.ti.com/lit/ds/symlink/tps7b68-q1.pdf
• Product Page: https://www.ti.com/product/TPS7B68-Q1

What Makes TPS7B6850QPWPRQ1 Valuable in Automotive Designs

Automotive electronics demand robust power rails that hold regulation across temperature, provide adequate transient response, and tolerate the harsh electrical environment found in vehicles. The Texas Instruments TPS7B6850QPWPRQ1 addresses these needs with a fixed 5-V output up to 500 mA in a thermally enhanced HTSSOP-28 package, simplifying layout and helping maintain junction temperatures. Its AEC‑Q100 certification underscores its suitability for automotive control modules and edge nodes where qualification and reliability are non-negotiable.

• 5-V, 0.5-A output: Convenient for powering ECUs, microcontrollers, sensors, and communications ICs that require a well‑regulated 5-V rail.
• Automotive pedigree: AEC‑Q100 (Q1) qualification provides confidence for Tier‑1 and OEM programs.
• PowerPAD package: The exposed thermal pad (PWP) supports thermal conduction to the PCB, enabling higher load currents with manageable temperature rise when properly heatsunk.
• Sourcing stability: An active lifecycle status helps reduce the risk associated with redesigns and last‑time buys, critical for long automotive lifecycles.

Detailed Specifications

The following list captures what’s known from the provided data. Where data is not available here, consult the official datasheet for exact electrical characteristics and limits.

Electrical Characteristics

• Output Voltage: 5 V (fixed)
• Maximum Output Current: 500 mA
• Regulator Type: LDO, Fixed
• Input Voltage Range: Not specified in datasheet
• Dropout Voltage: Not specified in datasheet
• Quiescent/Operating Current: Not specified in datasheet
• Output Accuracy: Not specified in datasheet
• PSRR/Noise: Not specified in datasheet
• Protection Features (OVP, OCP, OTP, reverse current): Not specified in datasheet
• Enable/PG/Reset Pins: Not specified in datasheet

Package, Mounting, and Thermal

• Package / Case: HTSSOP‑28 Exposed Pad (PWP)
• Pin Count: 28
• Mounting Type: Surface Mount
• Thermal Pad: Exposed (PowerPAD) for improved heat dissipation
• Recommended PCB Thermal Design: Use a solid copper area and thermal vias under the pad (values and layout guidance: Not specified in datasheet)

Environmental and Compliance

• Automotive Qualification: AEC‑Q100 (Q1)
• Operating Temperature Range: −40°C to 125°C
• RoHS/Environmental Status: Not specified in datasheet

Ordering and Packaging

• Ordering Part Number: TPS7B6850QPWPRQ1
• Series: TPS7B68‑Q1
• Packaging: Tape & Reel (TR)
• Lifecycle Status: Active

Typical Applications

The TPS7B6850QPWPRQ1 is designed for automotive systems, where a regulated 5-V supply is commonly used to power digital logic, microcontrollers, and communications interfaces. Representative use cases include:

• Body electronics and comfort modules requiring a stable 5-V rail for MCUs and sensors
• Gateway and interface modules powering CAN, LIN, or FlexRay transceivers
• Instrument clusters and infotainment sub-systems with low-noise 5-V rails for logic and signal conditioning
• ADAS and sensing sub-assemblies with localized, point-of-load regulation near the sensor or processor
• Telematics and connectivity modules needing a robust 5-V source from a vehicle battery domain

Note: Always confirm transient, dropout, and protection requirements against the datasheet and your system’s worst-case conditions (cold crank, load dump, reverse battery, jump start). Where high efficiency at large Vin–Vout drops is required, consider a pre-regulator DC/DC stage followed by this LDO for noise-sensitive rails.

Design-In Considerations

A successful design with the Texas Instruments TPS7B6850QPWPRQ1 balances electrical, thermal, and EMC constraints. The points below provide general guidance; specific values must be taken from the official datasheet and application notes.

• Input headroom and dropout: Ensure the input voltage continuously exceeds the dropout threshold by a safe margin for the full load and temperature range. Dropout voltage: Not specified in datasheet.
• Input and output capacitors: Select capacitor values, types, and ESR consistent with stability recommendations. Minimum capacitance, ESR range, and capacitor placement: Not specified in datasheet.
• Transients and surge: Mitigate automotive load dump and surge with upstream protection (e.g., TVS devices) and appropriate filtering. Maximum surge ratings: Not specified in datasheet.
• Thermal path: Exploit the PowerPAD by soldering the exposed pad to a generous copper area and using thermal vias to inner planes and the backside. Specific θJA/θJC data: Not specified in datasheet.
• Sequencing and control: If your architecture depends on enable/disable, reset, or power‑good signals, verify availability and thresholds. Presence of EN/PG pins: Not specified in datasheet.
• EMI/EMC: Keep input routes short, decouple locally, and consider a small RC or ferrite input filter if needed. Specific EMI data: Not specified in datasheet.

Fit, Form, and Function

• Fit: HTSSOP‑28 (PWP) footprint with exposed pad supports space‑constrained automotive PCBs. Ensure your layout respects the TI-recommended landing pattern and pad dimensions.
• Form: Tape‑and‑reel packaging streamlines automated assembly for volume production. The PowerPAD package profile aids thermal handling without large heatsinks.
• Function: Delivers a regulated 5-V output at up to 500 mA for downstream electronics. Confirm current limit, thermal shutdown behavior, and line/load regulation in the datasheet to ensure compliance with your system’s power budget and reliability targets.

Sourcing and Lifecycle

When specifying a power regulator for automotive programs, long-term availability and qualification are as important as electrical characteristics.

• Lifecycle Status: Active — helpful for multi‑year production.
• Automotive Qualification: AEC‑Q100 (Q1), aligning with automotive supplier requirements.
• Packaging for Procurement: Tape & Reel (TR) simplifies SMT assembly and replenishment.
• Series Alignment: Being part of the TPS7B68‑Q1 family can simplify second-sourcing within the same platform (verify pinouts and specs before substitution; specific alternates are Not specified in datasheet).

For current lead times and inventory, refer to Texas Instruments and authorized distributors. Availability can fluctuate based on demand and allocation cycles.

Schematic and Layout Pointers (General)

• Place input decoupling capacitors close to the regulator’s input pin(s) and ground reference, minimizing loop area.
• Follow TI’s recommended output capacitor value and ESR guidance for LDO stability (Not specified in datasheet here).
• Connect the exposed pad to ground (if recommended by TI) with a solid copper area and thermal vias to spread heat.
• Partition noisy switching nodes (if present in the system) away from the LDO to prevent conducted and radiated interference.
• Validate startup and transient behavior across temperature and battery conditions with bench testing and worst-case simulation.

Satisfying Automotive Compliance and Reliability

• Qualification: AEC‑Q100 (Q1) indicates the device meets key automotive stress tests, enabling use in many ECU domains.
• Temperature Range: −40°C to 125°C supports operation from cold‑start to elevated under‑hood conditions typical in automotive applications.
• Documentation and Traceability: Utilize TI’s product page and datasheet for PPAP, IMDS, and other quality documentation as required by your program (availability: Not specified in datasheet).

Sizing the Regulator for Your Load

Even though the TPS7B6850QPWPRQ1 can supply up to 500 mA, ensure the thermal budget supports your worst-case dissipation: P ≈ (Vin − 5 V) × Iload. While exact thermal resistance values are not provided here (Not specified in datasheet), using the exposed pad and adequate copper helps keep junction temperatures within limits. For higher Vin or sustained heavy loads, consider spreading heat with multiple copper planes and via arrays, and validate performance in thermal chambers.

Sibling Devices and Alternatives

Within the TPS7B68‑Q1 family, other output‑voltage options and configurations may be available; consult TI’s parametric tables and the family datasheet to identify devices that match your required voltage, features, and package. Specific alternates and cross‑references are Not specified in datasheet.

Frequently Asked Questions (FAQs)

• What is the output voltage of the Texas Instruments TPS7B6850QPWPRQ1?
• 5 V fixed.
• What is the maximum output current?
• Up to 500 mA.
• Is the TPS7B6850QPWPRQ1 automotive qualified?
• Yes, it is AEC‑Q100 (Q1) qualified.
• What package does it use?
• HTSSOP‑28 with exposed thermal pad (PowerPAD), TI package code PWP.
• What is the operating temperature range?
• −40°C to 125°C.
• Is the regulator adjustable?
• Not specified in datasheet.
• What is the input voltage range?
• Not specified in datasheet.
• What is the dropout voltage and quiescent current?
• Not specified in datasheet.
• Does it include features like enable, power‑good, current limit, or thermal shutdown?
• Not specified in datasheet.
• Is the device RoHS compliant?
• Not specified in datasheet.

Where to Learn More

• Texas Instruments TPS7B68‑Q1 Product Page: https://www.ti.com/product/TPS7B68-Q1
• Family Datasheet (covers TPS7B6850QPWPRQ1): https://www.ti.com/lit/ds/symlink/tps7b68-q1.pdf

If your design requires precise electrical limits (input voltage range, dropout, IQ, protection thresholds, ripple/PSRR, stability criteria), refer directly to the datasheet and ordering information for TPS7B6850QPWPRQ1. This ensures your power tree meets all worst‑case operating conditions and automotive qualification requirements.

Summary

The Texas Instruments TPS7B6850QPWPRQ1 is a practical, automotive‑grade 5‑V, 500‑mA LDO regulator in a thermally enhanced HTSSOP‑28 (PWP) package. Its combination of AEC‑Q100 qualification, fixed 5‑V output, and surface‑mount PowerPAD packaging makes it a strong building block for ECUs, communication modules, sensor clusters, and infotainment subsystems. For full electrical details and design constraints, consult TI’s TPS7B68‑Q1 datasheet and leverage recommended layout guidance to achieve robust performance across the full automotive temperature and electrical environment.