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Texas Instruments TPS76928QDBVRG4Q1
- Part No.:
- TPS76928QDBVRG4Q1
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS76928QDBVRG4Q1.pdf
- Description:
- IC REG LINEAR 2.8V 100MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,925
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Product details
Overview
TPS76928QDBVRG4Q1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified 100mA low-dropout linear regulator with fixed 2.8V output, 2.5V–16V input range, 150mV typical dropout at 100mA, ±1.2% output accuracy over load and temperature, and integrated thermal shutdown and overcurrent protection. It powers MCUs, SiC gate drivers, and microphones in hybrid powertrain systems.
For engineers reviewing the TPS76928QDBVRG4Q1 datasheet, TPS76928QDBVRG4Q1 pinout, TPS76928QDBVRG4Q1 application, or TPS76928QDBVRG4Q1 equivalent, key selection criteria include its 1.2% output accuracy, 46dB PSRR at 1MHz, 750µs internal soft-start, 2.2µF minimum stable output capacitance, and SOT-23-5 package with RθJA = 178.6°C/W.
Technical Context
The TPS76928QDBVRG4Q1 implements a PMOS pass transistor architecture enabling ultra-low quiescent current (50–95µA) and stable operation with ceramic capacitors as low as 2.2µF. Its feedback loop uses a precision 1.2V reference and supports fast transient response-±150mV load step recovery in under 4ms per Figure 5-43.
It integrates undervoltage lockout (UVLO) with 2.2V rising threshold and 1.9V falling threshold, plus enable logic with 0.415V low-level and 1.6V high-level thresholds, ensuring robust power sequencing in automotive environments operating from −40°C to +125°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 2.8V ±1.2% over full load (0–100mA) and temperature (−40°C to +125°C) |
| Input voltage range | 2.5V to 16V - supports direct connection to 12V battery rails with 18V absolute max rating |
| Dropout voltage | 150mV typical at 100mA - enables regulation down to 2.95V input for 2.8V output |
| PSRR @ 1MHz | 46dB - attenuates DC/DC switching noise without external filtering |
| Quiescent current | 50–95µA (adjustable/fixed variants) - enables always-on subsystems with low standby power |
| Soft-start time | 750µs typical - limits inrush current, reducing required input capacitance |
| Thermal shutdown | 173°C trip, 157°C reset - protects against sustained overload or poor PCB heatsinking |
Pinout & Package
TPS76928QDBVRG4Q1 is housed in a 5-pin SOT-23 (DBV) package measuring 2.9mm × 2.8mm with RθJA = 178.6°C/W on JEDEC 2s2p board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Input supply | Accepts 2.5V–16V; requires ≥1µF ceramic capacitor placed adjacent to IN/GND pins |
| 2 GND | Ground reference | Common return path for input, output, and internal circuitry; must be low-impedance |
| 3 EN | Enable control | Active-low logic input; <0.415V disables, >1.6V enables; supports power sequencing |
| 4 FB/NC | Feedback / No-connect | No connection (fixed-output variant); must remain unconnected and floating |
| 5 OUT | Regulated output | Delivers 2.8V ±1.2%; requires ≥2.2µF ceramic capacitor with ESR ≤3Ω for stability |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C ambient operation in safety-critical automotive systems |
| Ultra-low quiescent current | 50–95µA across load and temperature - extends battery life in always-on modules |
| High PSRR at high frequency | 46dB at 1MHz - suppresses noise from upstream buck converters without added LC filters |
| Integrated UVLO with hysteresis | 2.2V turn-on / 1.9V turn-off (0.13V hysteresis) - prevents erratic startup during cold cranking |
| Stable with low-ESR ceramics | Supports 2.2µF output capacitor with ESR as low as 0Ω - eliminates need for tantalum or polymer caps |
Applications
| ADAS Camera Module Power | Electric Power Steering MCU Bias |
|---|---|
Use Scenario: Powers image signal processor and CIS sensor in forward-facing ADAS camera under stop-start and load-dump conditions. IC Role / Device Role / Timing Role: Provides clean, regulated 2.8V bias for analog front-end and digital core of vision SoC. Use Value: 46dB PSRR at 1MHz rejects switching noise from 2MHz buck converter; 150mV dropout sustains regulation during 12V rail sag to 9V. | Use Scenario: Supplies 2.8V to safety-critical MCU in EPS control unit exposed to wide ambient and supply transients. IC Role / Device Role / Timing Role: Primary LDO for MCU VCC rail with enable-controlled power-up sequencing and thermal fault containment. Use Value: AEC-Q100 Grade 1 rating ensures reliability at 125°C ambient; 750µs soft-start prevents bus droop during MCU reset release. |
| Infotainment System Audio Codec | Onboard Charger Gate Driver Bias |
Use Scenario: Delivers low-noise 2.8V to audio codec in head-unit infotainment system sharing noisy 12V supply with display backlight. IC Role / Device Role / Timing Role: Low-noise post-regulator isolating sensitive analog audio circuitry from digital switching noise. Use Value: 165µVRMS output noise (10Hz–100kHz) preserves SNR; 1.2% accuracy maintains ADC reference integrity. | Use Scenario: Generates isolated 2.8V gate bias for SiC half-bridge drivers in 11kW OBC, operating from 400V DC-link via intermediate 12V rail. IC Role / Device Role / Timing Role: High-input-voltage LDO providing robust gate drive supply decoupled from main DC/DC stage. Use Value: 16V max input withstands 12V rail transients up to 18V; thermal shutdown prevents latch-up during short-circuit events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76928QDBVRQ1 | Same silicon die, identical electrical specs, but shipped in standard tape-and-reel (no G4 suffix) | No functional difference; G4 denotes TI's green packaging standard (halogen-free, RoHS-compliant) | Select TPS76928QDBVRG4Q1 when halogen-free compliance is required per automotive OEM specifications. |
| TLV73328PQDBVRQ1 | Lower IQ (45µA typ), lower dropout (125mV at 100mA), but only 300mA rated; no UVLO or thermal shutdown | Lacks automotive-grade fault protection; not AEC-Q100 qualified | Choose TLV73328PQDBVRQ1 only for non-safety-critical industrial applications where cost and IQ are prioritized over protection features. |
Compared with TPS76928QDBVRG4Q1, TPS76928QDBVRQ1 offers identical performance with standard packaging, while TLV73328PQDBVRQ1 trades automotive reliability and protection for lower quiescent current and higher output current-making it unsuitable for ASIL-B/C systems requiring fault containment.
Availability
TPS76928QDBVRG4Q1 is available at Aetrix Electronics and suitable for hybrid powertrain control units, ADAS camera modules, infotainment audio subsystems, and onboard charger gate driver biasing requiring stable component supply across extended temperature and automotive lifecycle requirements.
Supply support for TPS76928QDBVRG4Q1 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 specializing in analog, embedded processing, and automotive ICs, with decades of leadership in power management innovation.
The TPS769-Q1 product line delivers AEC-Q100 qualified LDOs optimized for automotive subsystems demanding high reliability, wide input range, and integrated protection-especially in ADAS, powertrain, and infotainment domains.
FAQ
What is the maximum input voltage rating for the TPS76928QDBVRG4Q1?
The TPS76928QDBVRG4Q1 has an absolute maximum input voltage of 18V, with recommended operation up to 16V. This allows direct interface with automotive 12V battery rails including load-dump transients. Exceeding 18V risks permanent damage per Absolute Maximum Ratings in the datasheet.
Does the TPS76928QDBVRG4Q1 require an external feedback resistor network?
No. The TPS76928QDBVRG4Q1 is a fixed-output 2.8V regulator. Pin 4 (FB/NC) is a no-connect terminal and must remain unconnected and floating-no external resistors are needed or permitted.
What output capacitor value and type ensure stability for the TPS76928QDBVRG4Q1?
The TPS76928QDBVRG4Q1 is stable with ≥2.2µF ceramic capacitors having ESR ≤3Ω. TI validates stability with X5R/X7R dielectrics; aluminum electrolytic or tantalum capacitors are unnecessary and not recommended due to higher ESR and aging effects.
How does the enable (EN) pin function on the TPS76928QDBVRG4Q1?
The EN pin is active-low: driving it below 0.415V disables the regulator (high-impedance output), while pulling it above 1.6V enables regulation. Internal pull-down ensures default-off state at power-up, supporting controlled sequencing in multi-rail systems.
Is the TPS76928QDBVRG4Q1 compatible with PCB layouts designed for the legacy TPS76928QDBVRQ1?
Yes. TPS76928QDBVRG4Q1 uses the identical DBV (SOT-23-5) package with identical 2.9mm × 2.8mm footprint and pinout. No PCB layout changes are required-only documentation updates for halogen-free compliance.
TPS76928QDBVRG4Q1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.25V @ 100mA
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 28 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TPS76928QDBVRG4Q1 FAQ
1.How can I place an order for TPS76928QDBVRG4Q1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS76928QDBVRG4Q1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS76928QDBVRG4Q1 reliable?
The price and inventory of TPS76928QDBVRG4Q1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS76928QDBVRG4Q1 is usually 5 days.
3.What payment methods are accepted for TPS76928QDBVRG4Q1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS76928QDBVRG4Q1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS76928QDBVRG4Q1?
TPS76928QDBVRG4Q1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS76928QDBVRG4Q1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS76928QDBVRG4Q1?
For technical support, including TPS76928QDBVRG4Q1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS76928QDBVRG4Q1 requirements.
6.How does Aetrix verify that TPS76928QDBVRG4Q1 is sourced from the original manufacturer or authorized distributors?
All TPS76928QDBVRG4Q1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS76928QDBVRG4Q1 meets industry standards.
7.What is the process for return or replacement of TPS76928QDBVRG4Q1?
All TPS76928QDBVRG4Q1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS76928QDBVRG4Q1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS76928QDBVRG4Q1 part is unused and in its original packaging.
Return procedure for TPS76928QDBVRG4Q1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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