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Texas Instruments TL331BQDBVRQ1
- Part No.:
- TL331BQDBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TL331BQDBVRQ1.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,949
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Product details
Overview
TL331BQDBVRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified automotive single voltage comparator in SOT-23-5 package, operating from 2V to 36V supply, with 0.37mV typical input offset voltage, 3.5nA typical input bias current, and 1µs typical propagation delay. It serves as a precision level-shifting and threshold-detection element in powertrain monitoring circuits.
For engineers reviewing the TL331BQDBVRQ1 datasheet, TL331BQDBVRQ1 pinout, TL331BQDBVRQ1 application, or TL331BQDBVRQ1 equivalent, this page delivers verified electrical specs, automotive-grade thermal and ESD performance data, SOT-23-5 terminal mapping, and validated drop-in alternatives for HEV/EV body control and infotainment systems.
Technical Context
The TL331BQDBVRQ1 implements a PNP Darlington input stage enabling rail-to-rail input common-mode operation down to ground and up to VCC – 2.0V over –40°C to +125°C. Its open-collector NPN output supports wired-AND logic and TTL/MOS/CMOS interfacing via external pull-up.
It features dedicated ESD protection cells (HBM ±2000V, CDM ±750V) and improved negative input voltage handling versus legacy TL331-Q1. The device achieves 1µs response time with 5mV overdrive at 5V supply and maintains <4mV max offset voltage across full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2V to 36V - supports direct connection to 12V/24V automotive batteries and high-side sensing without level shifters |
| Input Offset Voltage (max) | ±4 mV over –40°C to +125°C - ensures reliable threshold detection in engine bay temperature extremes |
| Input Bias Current (typ) | 3.5 nA at 25°C - minimizes loading on high-impedance sensor bridges and resistive divider references |
| Propagation Delay | 1 µs typical (high-to-low, 5mV overdrive) - enables fast fault response in battery disconnect and overvoltage protection |
| Quiescent Current | 330 µA typical at 5V - sustains low-power operation in always-on vehicle modules |
| Differential Input Range | ±36 V - allows direct comparison of signals referenced to different potentials, e.g., isolated CAN bus monitoring |
| ESD Rating (HBM) | ±2000 V - meets AEC-Q100 stress requirements for under-hood electronics assembly and field operation |
Pinout & Package
SOT-23-5 package (2.90 mm × 1.60 mm), surface-mount, thermally enhanced for automotive under-hood use. Pin 1 = IN–, Pin 2 = GND, Pin 3 = IN+, Pin 4 = OUT, Pin 5 = VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN– (Pin 1) | Negative input | Comparator inverting input; accepts signals down to –0.3V (with current limiting) and up to VCC – 2.0V |
| GND (Pin 2) | Ground reference | Primary return path for internal bias and output sink current; must be low-impedance for noise immunity |
| IN+ (Pin 3) | Positive input | Comparator non-inverting input; shares same common-mode range and ESD robustness as IN– |
| OUT (Pin 4) | Open-collector output | NPN transistor emitter grounded, collector exposed - requires external pull-up to define logic-high level and sink up to 20mA |
| VCC (Pin 5) | Power supply | Single-supply input rated –0.3V to 38V absolute max; powers internal bias, input stage, and output transistor |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - suitable for powertrain, body control, and ADAS sub-systems |
| Low input offset drift | ±4 mV max over full temperature range - eliminates need for system-level calibration in voltage monitoring applications |
| Wide common-mode input range | Includes ground and extends to VCC – 2.0V - enables direct sensing of battery-ground-referenced signals without level shifting |
| Fast propagation with low overdrive | 1 µs response at 5mV input overdrive - supports real-time fault detection in high-voltage EV battery management |
| Robust ESD architecture | HBM ±2000 V, CDM ±750 V - exceeds automotive manufacturing and service environment requirements |
Applications
| Overvoltage Protection Circuit | Battery State-of-Charge Monitor |
|---|---|
|
Use Scenario: Detecting 16V+ battery voltage during alternator regulation failure to trigger shutdown relay. IC Role / Device Role / Timing Role: Precision voltage comparator comparing sensed battery voltage against 15.8V reference. Use Value: ±4mV offset tolerance ensures trip point accuracy within ±0.025% of 16V, preventing false trips or delayed response. |
Use Scenario: Monitoring cell stack voltage in 12S Li-ion traction battery to estimate remaining charge. IC Role / Device Role / Timing Role: High-impedance differential comparator measuring voltage drop across shunt resistor. Use Value: 3.5nA input bias current avoids measurement error in µA-range current sensing paths. |
| Engine Coolant Temperature Threshold | Infotainment Power Sequencing |
|
Use Scenario: Activating cooling fan when NTC thermistor voltage crosses 2.1V threshold at 105°C. IC Role / Device Role / Timing Role: Single-supply comparator interfacing directly with analog sensor output. Use Value: Rail-to-ground input capability allows direct connection to ratiometric NTC divider without level shift. |
Use Scenario: Enabling display backlight only after main SoC power rails stabilize to 3.3V. IC Role / Device Role / Timing Role: Logic-level translator and enable gate using open-collector output pulled to 3.3V. Use Value: 1µs propagation delay ensures deterministic power-up sequencing timing within 100ns jitter budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL331QDBVRQ1 | Same SOT-23-5 package; higher 0.7mA quiescent current; ±9mV max offset voltage; identical Grade 1 temp range | Acceptable where lower precision and higher supply current are tolerable, e.g., non-critical status indicators | Select TL331QDBVRQ1 only if cost sensitivity outweighs offset and current advantages of TL331BQDBVRQ1 |
| LM393BQDRQ1 | Dual-channel; 0.5µA typical input bias; ±1mV max offset; 1.3µs propagation delay; SOIC-8 package | Preferred for dual-threshold designs (e.g., window comparators) or PCBs with SOIC footprints and space for larger package | Choose LM393BQDRQ1 when dual functionality or superior offset spec justifies extra channel and footprint size |
Compared with TL331QDBVRQ1, TL331BQDBVRQ1 delivers 44% lower quiescent current and 55% tighter offset tolerance-critical for always-on battery monitoring. Versus LM393BQDRQ1, it offers smaller SOT-23 footprint and single-channel optimization but trades off dual functionality and slightly slower response.
Availability
TL331BQDBVRQ1 is available at Aetrix Electronics and suitable for automotive powertrain control, HEV/EV battery management, and infotainment power sequencing requiring stable component supply across extended temperature and long product lifecycles.
Supply support for TL331BQDBVRQ1 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 deep expertise in automotive-grade IC design and AEC-Q100 qualification.
The TL331B-Q1 product line was engineered specifically for cost-sensitive automotive subsystems requiring high-voltage tolerance, low power, and robust ESD performance-targeting body electronics, powertrain sensors, and infotainment power management.
FAQ
What is the maximum operating junction temperature for TL331BQDBVRQ1?
The TL331BQDBVRQ1 has a maximum operating virtual junction temperature of +150°C, with recommended ambient operating range of –40°C to +125°C per AEC-Q100 Grade 1 qualification. This enables deployment in under-hood locations near engines or inverters where ambient temperatures exceed 105°C.
Can TL331BQDBVRQ1 replace TL331IDBVRQ1 or TL331QDBVRQ1 on existing PCBs?
Yes, TL331BQDBVRQ1 is specified as a drop-in replacement for both TL331IDBVRQ1 and TL331QDBVRQ1, sharing identical SOT-23-5 pinout, footprint, and voltage ratings. No PCB changes are required, though its lower offset and supply current may improve system accuracy and efficiency.
Does TL331BQDBVRQ1 support dual-supply operation?
TL331BQDBVRQ1 is designed for single-supply operation but can function with dual supplies if the difference between VCC and GND is 2V to 36V and VCC is at least 1.5V more positive than the input common-mode voltage. Dual-supply use is uncommon and not optimized in layout or characterization.
What is the output configuration of TL331BQDBVRQ1 and how should it be interfaced?
TL331BQDBVRQ1 features an open-collector NPN output (Pin 4). It must be used with an external pull-up resistor to a logic voltage (e.g., 3.3V or 5V). This configuration enables wired-AND logic, level translation, and compatibility with TTL, MOS, and CMOS inputs across varying supply domains.
How does the input common-mode range of TL331BQDBVRQ1 compare to standard op-amps?
TL331BQDBVRQ1 supports input voltages from ground (–0.3V absolute min) up to VCC – 2.0V across –40°C to +125°C. Unlike many op-amps, it does not require input signals to stay within the supply rails - enabling direct interface with sensors referenced to battery ground or floating sources without clamping diodes.
TL331BQDBVRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Open-Collector, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2V ~ 36V
- :
- 2.5mV @ 36V
- Voltage - Input Offset (Max):
- 0.025µA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 430µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C (TJ)
- Operating Temperature:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- SOT-23-5
TL331BQDBVRQ1 FAQ
1.How can I place an order for TL331BQDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TL331BQDBVRQ1 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 TL331BQDBVRQ1 reliable?
The price and inventory of TL331BQDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL331BQDBVRQ1 is usually 5 days.
3.What payment methods are accepted for TL331BQDBVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL331BQDBVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL331BQDBVRQ1?
TL331BQDBVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL331BQDBVRQ1 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 TL331BQDBVRQ1?
For technical support, including TL331BQDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL331BQDBVRQ1 requirements.
6.How does Aetrix verify that TL331BQDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All TL331BQDBVRQ1 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 TL331BQDBVRQ1 meets industry standards.
7.What is the process for return or replacement of TL331BQDBVRQ1?
All TL331BQDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TL331BQDBVRQ1, 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 TL331BQDBVRQ1 part is unused and in its original packaging.
Return procedure for TL331BQDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL331BQDBVRQ1 Tags
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