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Texas Instruments TPS76333QDBVRG4Q1
- Part No.:
- TPS76333QDBVRG4Q1
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS76333QDBVRG4Q1.pdf
- Description:
- IC REG LINEAR 3.3V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,975
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Product details
Overview
TPS76333QDBVRG4Q1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-grade 3.3V fixed-output low-dropout linear regulator delivering up to 150mA output current with ±1.5% output voltage accuracy, 175mV typical dropout at 150mA, and 65μA quiescent current at zero load - designed for power rails in vehicle instrument clusters and traction inverters.
For engineers reviewing the TPS76333QDBVRG4Q1 datasheet, TPS76333QDBVRG4Q1 pinout, TPS76333QDBVRG4Q1 application, or TPS76333QDBVRG4Q1 equivalent, key selection criteria include its –40°C to +150°C junction temperature range, active overshoot pulldown protection, SOT-23-5 package footprint, and compatibility with 1μF minimum output capacitance ceramic capacitors.
Technical Context
The TPS76333QDBVRG4Q1 implements a bandgap-referenced error amplifier with internal 1.2V reference, UVLO, thermal shutdown, and foldback current limiting. Its enable circuitry features active-high logic with 0.85V–1.6V high-level threshold and 0.15V–0.72V low-level threshold, enabling precise system-level power sequencing.
Unlike legacy variants, this "new chip" revision integrates soft-start to limit inrush current and active over-shoot pulldown to rapidly discharge the output during disable, supporting reliable operation in safety-critical automotive subsystems where transient control and fault recovery are essential.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±1.5% (typical) across –40°C to +150°C TJ - meets tight supply requirements of MCU cores and CAN transceivers. |
| Max Output Current | 150mA continuous - sufficient for powering microcontrollers, sensors, and interface ICs in compact automotive modules. |
| Dropout Voltage | 175mV (typical) at 150mA - enables stable regulation down to VIN = 3.475V, extending battery runtime in 5V rail systems. |
| Quiescent Current | 65μA at IOUT = 0mA - minimizes standby power loss in always-on vehicle subsystems such as body control modules. |
| Input Voltage Range | 2.7V to 10V - supports direct connection to 12V battery systems with transient suppression, including cold-crank and load-dump conditions. |
| Thermal Resistance | RθJA = 178.6°C/W (SOT-23-5) - allows 150mA operation at TJ ≤ 150°C with minimal PCB copper area. |
| ESD Rating | CDM Level C4 (±1000V), HBM Level 1C (±2000V) - qualified for automated manufacturing in automotive production lines. |
Pinout & Package
TPS76333QDBVRG4Q1 is housed in a 5-pin SOT-23 (DBV) package measuring 2.9mm × 2.8mm, optimized for space-constrained automotive PCBs and compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Input supply | Accepts 2.7V–10V input; requires ≥0.47μF ceramic capacitor to GND for stability and noise filtering. |
| GND (Pin 2) | Ground reference | Primary return path for input, output, and internal regulator circuitry; must be low-impedance connection to PCB ground plane. |
| EN (Pin 3) | Enable control | Active-high logic input; drives high (>0.85V) to enable regulator, low (<0.15V) to shut down and reduce IQ to ≤1.25μA. |
| NC/FB (Pin 4) | No-connect (fixed version) | Not connected internally; left floating or tied to GND per layout best practice - not used for feedback in TPS76333QDBVRG4Q1. |
| OUT (Pin 5) | Regulated output | Delivers 3.3V ±1.5%; requires ≥1μF ceramic capacitor (derated) to GND; supports active pulldown during disable. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +150°C operating junction temperature - suitable for under-hood and powertrain applications. |
| Active overshoot pulldown | Internally discharges OUT pin during disable to prevent bus contention and ensure clean power-down sequencing. |
| Soft-start circuit | Controls output ramp rate to limit inrush current - reduces required input capacitance and avoids voltage droop on shared rails. |
| Low-ESR capacitor support | Stable with 0Ω to 1Ω output capacitor ESR - enables use of small, low-cost ceramic capacitors without external compensation. |
| Logic-enabled sleep mode | Reduces quiescent current to ≤1.25μA at TJ = 25°C when EN is low - critical for low-power always-on automotive functions. |
Applications
| Vehicle Instrument Cluster | High-Voltage Battery System |
|---|---|
Use Scenario: Powering digital display controllers, analog gauges, and CAN/LIN communication interfaces within the dashboard assembly. IC Role / Device Role / Timing Role: Primary 3.3V LDO supplying MCU, EEPROM, and sensor signal conditioning circuits. Use Value: ±1.5% output accuracy ensures reliable ADC reference and logic-level integrity across full automotive temperature range. | Use Scenario: Regulating auxiliary 3.3V rail from high-voltage battery pack (e.g., 400V–800V DC-DC secondary side) for BMS monitoring ICs. IC Role / Device Role / Timing Role: Post-regulator providing clean, low-noise 3.3V supply to isolated ADCs and voltage monitors. Use Value: 175mV dropout enables efficient operation even with degraded input voltage during battery discharge cycles. |
| 2-Wheeler Traction Drive | Traction Inverter Control Unit |
Use Scenario: Supplying gate drivers and position-sensing circuitry in compact e-scooter or e-bike motor controllers. IC Role / Device Role / Timing Role: Local 3.3V regulator for Hall-effect sensors and half-bridge driver logic. Use Value: RθJA = 178.6°C/W allows full 150mA load capability without heatsinking in thermally constrained enclosures. | Use Scenario: Powering DSPs, PWM generators, and isolation barrier controllers in EV inverter gate driver boards. IC Role / Device Role / Timing Role: Secondary-side bias supply for isolated gate driver ICs and current sensing amplifiers. Use Value: Active pulldown prevents floating gate voltages during fault shutdown, enhancing functional safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76333QDBVRQ1 | Same electrical specs and pinout; G4 suffix denotes tape-and-reel packaging per TI's orderable addendum - no functional difference. | No application difference; identical performance, qualification, and thermal behavior. | Select TPS76333QDBVRQ1 only if standard reel packaging is required for SMT line compatibility. |
| TLV73333PQDBVRQ1 | Lower dropout (130mV @ 150mA), lower IQ (45μA), but rated only to +125°C TJ and lacks AEC-Q100 Grade 1 certification. | Not suitable for under-hood or powertrain locations requiring >125°C operation; limited to cabin or chassis applications. | Choose TLV73333PQDBVRQ1 only for cost-sensitive, non-safety-critical interior modules with relaxed thermal requirements. |
Compared with TPS76333QDBVRG4Q1, TPS76333QDBVRQ1 offers identical functionality in alternate packaging, while TLV73333PQDBVRQ1 trades automotive qualification and high-temperature capability for improved efficiency - making the original part irreplaceable for Grade 1 thermal and reliability demands.
Availability
TPS76333QDBVRG4Q1 is available at Aetrix Electronics and suitable for vehicle instrument clusters, high-voltage battery management systems, and traction inverter control units requiring stable component supply with full AEC-Q100 traceability.
Supply support for TPS76333QDBVRG4Q1 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 coverage from power management to signal chain solutions.
The TPS763-Q1 product line delivers AEC-Q100-compliant LDO regulators engineered specifically for automotive subsystems demanding extended temperature operation, robust transient response, and functional safety-aware design - including instrument clusters, ADAS domain controllers, and electric powertrain modules.
FAQ
What is the maximum input voltage rating for TPS76333QDBVRG4Q1?
The TPS76333QDBVRG4Q1 supports an absolute maximum input voltage of 18V for the "new chip" revision, though recommended operating conditions specify 2.7V to 10V. This higher absolute rating provides margin against load-dump transients in 12V automotive systems, ensuring robustness without external clamping in most implementations.
Does TPS76333QDBVRG4Q1 require an external feedback resistor network?
No, TPS76333QDBVRG4Q1 is a fixed-output 3.3V variant and does not require external feedback resistors. Pin 4 (NC/FB) is internally disconnected and must be left unconnected or tied to GND - unlike adjustable versions such as TPS76333AQDBVRG4Q1, which use that pin for voltage setting.
How does the enable pin (EN) behave during power-down in TPS76333QDBVRG4Q1?
When the EN pin is driven below 0.15V, TPS76333QDBVRG4Q1 enters shutdown mode with ≤1.25μA standby current and activates internal active pulldown on the OUT pin to rapidly discharge downstream capacitance - preventing floating outputs and ensuring deterministic power-down sequencing in automotive networks.
What output capacitor value is required for stable operation of TPS76333QDBVRG4Q1?
TPS76333QDBVRG4Q1 requires a minimum 1μF ceramic output capacitor (with ≥50% derating at operating voltage and temperature), and supports ESR from 0Ω to 1Ω. A 2.2μF X7R ceramic capacitor is recommended for optimal transient response and PSRR across frequency.
Is TPS76333QDBVRG4Q1 compatible with lead-free reflow soldering processes?
Yes, TPS76333QDBVRG4Q1 is RoHS-compliant and qualified for standard lead-free reflow profiles per JEDEC J-STD-020, with peak temperature tolerance up to 260°C - matching SOT-23-5 package specifications and supporting high-volume automotive PCB assembly.
TPS76333QDBVRG4Q1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 100 µA
- Current - Supply (Max):
- 140 µA
- 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
TPS76333QDBVRG4Q1 FAQ
1.How can I place an order for TPS76333QDBVRG4Q1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS76333QDBVRG4Q1 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 TPS76333QDBVRG4Q1 reliable?
The price and inventory of TPS76333QDBVRG4Q1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS76333QDBVRG4Q1 is usually 5 days.
3.What payment methods are accepted for TPS76333QDBVRG4Q1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS76333QDBVRG4Q1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS76333QDBVRG4Q1?
TPS76333QDBVRG4Q1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS76333QDBVRG4Q1 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 TPS76333QDBVRG4Q1?
For technical support, including TPS76333QDBVRG4Q1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS76333QDBVRG4Q1 requirements.
6.How does Aetrix verify that TPS76333QDBVRG4Q1 is sourced from the original manufacturer or authorized distributors?
All TPS76333QDBVRG4Q1 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 TPS76333QDBVRG4Q1 meets industry standards.
7.What is the process for return or replacement of TPS76333QDBVRG4Q1?
All TPS76333QDBVRG4Q1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS76333QDBVRG4Q1, 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 TPS76333QDBVRG4Q1 part is unused and in its original packaging.
Return procedure for TPS76333QDBVRG4Q1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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