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TPS76350QDBVRQ1

Automotive 150-mA, 10-V, low-dropout voltage regulator with enable 5-SOT-23 -40 to 125

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TEXAS INSTRUMENTS

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TPS76350QDBVRQ1

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Key Attributes

Datasheet

Products Specifications

Texas Instruments TPS76350QDBVRQ1 – Automotive 150‑mA, 10‑V Max LDO Regulator, Fixed 5‑V Output in SOT‑23‑5 (DBV)

The Texas Instruments TPS76350QDBVRQ1 is an AEC‑Q100 Grade 1, automotive‑qualified low‑dropout (LDO) linear regulator delivering a fixed 5‑V output at up to 150 mA. Housed in a compact 5‑pin SOT‑23 (DBV) package, this device targets space‑constrained automotive ECUs, sensor modules, and point‑of‑load rails that benefit from low quiescent current and an enable pin for power sequencing or shutdown.

This article consolidates the essential facts engineers and sourcing managers need when evaluating and procuring the TPS76350QDBVRQ1: what it does, where it fits, the key specifications and compliance, and practical selection and design‑in guidance. All parameters and claims below are sourced from the provided TI product data and should be verified against the latest Texas Instruments datasheet before final design decisions.

Overview

  • Manufacturer/Brand: Texas Instruments
  • MPN: TPS76350QDBVRQ1 (TPS763‑Q1 series)
  • Category: Linear Regulator (LDO)
  • Output: 5 V fixed
  • Output current: Up to 150 mA
  • Maximum input voltage: 10 V
  • Package: SOT‑23‑5 (DBV), Tape & Reel (TR)
  • Mounting: Surface mount
  • Operating ambient range: −40°C to +125°C (AEC‑Q100 Grade 1)
  • Enable pin: Yes
  • Lifecycle status: Active
  • RoHS status: RoHS Compliant

Why engineers choose it:

  • Small DBV (SOT‑23‑5) footprint for dense automotive PCBs
  • Fixed 5‑V rail for sensors, MCUs/logic, and housekeeping loads
  • Low quiescent operation to help meet stringent automotive power budgets
  • Enable pin for power sequencing, standby modes, and system‑level control

Key Features and Benefits

  • 5‑V fixed output, 150‑mA capability
  • Suits low‑power rails that must remain stable across wide ambient conditions.
  • Up to 10‑V input rating
  • Supports operation from regulated intermediate rails present in automotive systems.
  • Enable/shutdown control
  • Facilitates low‑power standby states and deterministic startup sequencing.
  • Automotive‑qualified (AEC‑Q100 Grade 1)
  • Validated for −40°C to +125°C ambient operation in automotive environments.
  • Low quiescent current
  • Helps minimize system current draw in standby and ignition‑off conditions (exact IQ not specified here).
  • Compact SOT‑23‑5 (DBV) package
  • Eases routing in tight spaces and supports automated assembly with TR packaging.

Specifications

The following parameters are extracted from the provided Texas Instruments information. If a parameter is not included below, it is not specified in the provided data and should be confirmed in the latest datasheet.

Electrical

  • Output voltage: 5 V (fixed)
  • Output current: 150 mA (maximum)
  • Maximum input voltage: 10 V
  • Enable pin: Yes
  • Low quiescent current: Stated as a feature; numeric value not specified in the provided data
  • Dropout voltage: Not specified in provided data
  • PSRR / output noise: Not specified in provided data
  • Protection features (OCP/OTP/UVLO/Reverse current): Not specified in provided data

Mechanical and Packaging

  • Package: SOT‑23‑5 (TI package code DBV)
  • Pin count: 5
  • Mounting type: Surface mount
  • Packaging: Tape & Reel (TR)

Environmental and Compliance

  • Operating ambient temperature: −40°C to +125°C
  • Qualification: AEC‑Q100 Grade 1
  • RoHS status: RoHS Compliant

Applications

The Texas Instruments TPS76350QDBVRQ1 is intended for embedded, low‑power rails where a fixed 5‑V output and compact footprint are desirable. Representative use cases include:

  • Automotive ECUs and modules
  • 5‑V housekeeping rails for signal conditioning, level shifting, transceivers (when 5‑V), and peripheral power.
  • Sensor and MCU/logic rail regulation
  • Provides a quiet 5‑V supply for sensor interfaces and low‑power logic blocks that require a fixed 5‑V domain.
  • General‑purpose point‑of‑load regulation in vehicles
  • From intermediate rails or protected/regulated sources that do not exceed 10 V at the LDO input.

Note: The device’s maximum input rating is 10 V. For systems deriving power from a 12‑V automotive battery, ensure the LDO input is constrained to ≤10 V (for example, via a pre‑regulator, protection stage, or intermediate rail) to remain within device limits.

Design Considerations and Best Practices

The following guidance focuses on practical integration without assuming values not provided in the current dataset. Always consult the TI datasheet for exact electrical characteristics and component selection.

Input voltage headroom and battery environments

  • Ensure the input presented to the TPS76350QDBVRQ1 never exceeds 10 V.
  • In automotive designs, raw battery lines can exceed 14 V and experience transients. Feed the LDO from a pre‑regulated or protected rail that respects the 10‑V maximum, and apply appropriate transient suppression upstream.

Enable pin usage for system power control

  • The enable pin simplifies power sequencing by allowing the 5‑V rail to be turned on only when upstream rails are stable.
  • Tie the enable pin to a host controller or ignition‑controlled logic to reduce current draw in standby/parked states.

Quiescent current and standby design

  • Low quiescent current is cited as a feature, which is valuable for always‑on modules. Use the enable pin to further reduce consumption when the 5‑V rail is not required.
  • Verify the exact IQ and shutdown current in the TI datasheet to ensure compliance with module‑level current budgets.

Output capacitor and stability

  • LDO stability is highly dependent on output capacitor value, ESR, and placement. Follow the specific capacitor recommendations and layout guidance in the TI datasheet for TPS76350‑Q1.
  • Place input and output capacitors close to the device pins and provide a low‑impedance ground return to minimize noise and improve transient response.

Thermal considerations

  • Although the TPS76350QDBVRQ1 is a 150‑mA device, power dissipation depends on load current and the Vin–Vout differential. Evaluate worst‑case heat rise at the upper end of ambient range (up to +125°C) and provide adequate copper for heat spreading.
  • If power dissipation is high due to a larger Vin–Vout drop, consider lowering the upstream rail, using duty‑cycled operation via enable, or evaluating higher‑efficiency alternatives where appropriate.

EMI/EMC practices

  • LDOs can help clean up supply noise, but board‑level practices remain important. Keep high‑di/dt paths short, route sensitive nodes away from switching nets, and maintain solid ground references.

Startup and sequencing

  • Use enable to ensure downstream ICs receive a stable 5‑V rail after upstream supplies settle. Confirm any sequencing or rise‑time constraints in the downstream devices’ datasheets.

Sourcing, Lifecycle, and Ordering

  • Lifecycle status: Active (per provided data). Check the TI product page for the latest status.
  • Automotive grade: AEC‑Q100 Grade 1, −40°C to +125°C ambient.
  • RoHS: RoHS Compliant.
  • Availability: Check authorized distributors or the Texas Instruments store.
  • Packaging: Tape & Reel (TR) for automated assembly.
  • Orderable information:
  • MPN: TPS76350QDBVRQ1
  • Package: SOT‑23‑5 (DBV)

Procurement tips:

  • For automotive programs, align with approved manufacturers lists (AML) and PPAP requirements as applicable.
  • Secure samples for validation early; low‑power LDOs in small packages are widely used and can see demand spikes.
  • Verify lead times and regional stocking. Automotive‑grade pricing varies by volume and region; request a quote through TI or franchised distributors.

Compliance and Quality

  • AEC‑Q100 Grade 1
  • Qualified for −40°C to +125°C ambient operation, suitable for under‑hood and cabin modules depending on placement and thermal design.
  • RoHS Compliant
  • Supports environmental compliance objectives.

If your program requires additional documentation (e.g., IMDS, material declarations, quality reports), consult the TI product page or distributor portals.

How the TPS76350QDBVRQ1 Fits in Your Design Flow

  • Architectural selection
  • Choose the TPS76350QDBVRQ1 when you need a compact, fixed 5‑V rail up to 150 mA and can ensure Vin ≤ 10 V.
  • Schematic capture
  • Implement the typical application circuit from the TI datasheet, including recommended input/output capacitors and any enable pull‑ups/pull‑downs.
  • Layout
  • Keep capacitors close to the IC, use short traces, and provide ground pour beneath the device for thermal performance and noise control.
  • Verification
  • Characterize line/load regulation, startup behavior via enable, and thermal rise in the target enclosure across −40°C to +125°C ambient.
  • Compliance and PPAP
  • Confirm AEC‑Q100 Grade 1 qualification meets program needs; coordinate with TI or your distributor for any required documentation.

Selection Checklist

Use this quick checklist to confirm fit and reduce back‑and‑forth during sourcing and design reviews:

  • Output rail is fixed 5 V and ≤150 mA load.
  • The upstream rail is regulated/limited to ≤10 V under all conditions (including transients presented to the LDO input).
  • Thermal headroom is sufficient at worst‑case Vin, Iout, and ambient.
  • Enable control and logic thresholds align with system power sequencing.
  • Datasheet‑recommended capacitors are available in your AVL and meet tolerance/ESR targets.
  • AEC‑Q100 Grade 1 and RoHS compliance meet program requirements.
  • SOT‑23‑5 (DBV) package suits assembly rules; Tape & Reel ordering is acceptable.

Frequently Asked Questions (FAQs)

  • What is the output voltage of the Texas Instruments TPS76350QDBVRQ1?

  • Fixed 5 V.

  • What is the maximum continuous output current?

  • Up to 150 mA.

  • What is the allowed input voltage range?

  • Up to 10 V maximum (ensure the input to the LDO never exceeds 10 V in operation).

  • Does the TPS76350QDBVRQ1 include an enable pin?

  • Yes, it provides enable/shutdown control for power sequencing and low‑power modes.

  • Is the device automotive‑qualified?

  • Yes. It is AEC‑Q100 Grade 1 qualified for −40°C to +125°C ambient operation.

  • Is the TPS76350QDBVRQ1 RoHS compliant?

  • Yes, RoHS Compliant per the provided data.

  • What is the package and pin count?

  • SOT‑23‑5 (DBV), 5 pins, surface‑mount.

  • What about dropout voltage, PSRR, and noise figures?

  • Not specified in the provided data. Refer to the TI datasheet for exact values and design limits.

  • Can I power it directly from a car battery?

  • Do not present raw battery directly if it can exceed 10 V at the LDO input. Use a pre‑regulated or protected rail that keeps Vin ≤ 10 V.

Resources

  • Texas Instruments Product Page: https://www.ti.com/product/TPS76350-Q1
  • Datasheet: https://www.ti.com/lit/ds/symlink/tps76350-q1.pdf

Note: This summary is based on the provided Texas Instruments TPS76350‑Q1 information. Always consult the latest official datasheet for definitive specifications, application circuits, and design guidelines.

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