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Texas Instruments LMV331QDBVRSV
- Part No.:
- LMV331QDBVRSV
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMV331QDBVRSV.pdf
- Description:
- PROTOTYPE
- Quantity:
- Payment:
- Shipping:
Inventory:2,651
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Product details
Overview
LMV331QDBVRSV from Texas Instruments is an automotive-grade single low-voltage comparator with open-collector output, 2.7 V to 5.5 V supply operation, 60 μA typical supply current, and input common-mode range extending to ground - used in battery monitoring and overvoltage detection circuits.
For engineers reviewing the LMV331QDBVRSV datasheet, LMV331QDBVRSV pinout, LMV331QDBVRSV application, or LMV331QDBVRSV equivalent, key selection criteria include its AEC-Q100 qualification, rail-to-rail input capability down to GND, 200 mV typical output saturation voltage at 1 mA, and SOT-23-5 package compatibility with space-constrained automotive sensor interfaces.
Technical Context
The LMV331QDBVRSV implements a bipolar input stage with complementary NPN/PNP differential pair architecture, enabling input common-mode voltage operation from GND to VCC+ − 0.2 V. Its open-collector output supports wired-OR logic and flexible pull-up configuration up to 5.5 V independent of VCC+.
It features internal ESD protection (±2 kV HBM), operates across –40°C to +125°C, and delivers propagation delays as low as 200 ns (tPHL) at 5 V with 100 mV overdrive - optimized for fast response in fault-detection and window-comparator topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V - supports direct connection to 3.3 V or 5 V automotive rails without regulation. |
| Input Offset Voltage | 1.7–7 mV (typ/max @ 25°C) - enables accurate threshold detection in low-voltage sensing (e.g., 12 V battery undervoltage at 10.8 V). |
| Supply Current | 60 μA typ - allows continuous operation in always-on vehicle modules with sub-100 μA system budget. |
| Output Saturation Voltage | 200 mV typ @ 1 mA - ensures reliable logic-low assertion into standard CMOS/TTL inputs even under load. |
| Propagation Delay | 200 ns tPHL (5 V, 100 mV overdrive) - meets timing requirements for fast fault shutdown in motor control or lighting systems. |
| Common-Mode Input Range | 0 V to VCC+ − 0.2 V - permits direct sensing of ground-referenced signals (e.g., shunt voltage, thermistor divider bottom node). |
| AEC-Q100 Grade | Grade 1 (–40°C to +125°C) - qualified for engine bay, body control module, and ADAS power domain applications. |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 1.6 mm × 1.45 mm height, surface-mount, moisture sensitivity level 1 (260°C reflow compatible).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Open-collector output | Sinks current only; requires external pull-up to define high-level voltage and logic family compatibility. |
| 2 (IN−) | Inverting input | Accepts reference or feedback signal; matched bias current minimizes offset error in precision thresholds. |
| 3 (IN+) | Non-inverting input | Accepts sensed signal (e.g., battery voltage divider); input range includes GND for single-supply designs. |
| 4 (GND) | Analog ground | Reference return for inputs and output stage; must be low-impedance path to avoid noise coupling. |
| 5 (VCC+) | Positive supply | Power rail input; decoupling capacitor (0.1 μF ceramic) required within 3 mm for stable high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 certified - validated for reliability in automotive powertrain, chassis, and infotainment systems. |
| Ground-sensing input | Input common-mode range extends to 0 V - eliminates need for level-shifting when monitoring GND-referenced sensors. |
| Low-power operation | 60 μA typical ICC - enables integration into ultra-low-quiescent-current battery management subsystems. |
| Open-collector output | Supports mixed-voltage interfacing (e.g., 3.3 V comparator driving 5 V microcontroller interrupt line via 5 V pull-up). |
| Fast propagation delay | 200 ns tPHL at 5 V - suitable for real-time overcurrent detection in DC-DC converters and LED drivers. |
Applications
| Battery Voltage Monitor | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Monitoring 12 V lead-acid battery voltage during vehicle start-stop cycles to detect undervoltage (<10.5 V) and prevent ECU brownout. IC Role / Device Role / Timing Role: Single comparator compares divided battery voltage against precision reference; asserts open-collector output to trigger MCU reset or warning LED. Use Value: Ground-sensing input enables direct connection to battery divider's low-side resistor; 60 μA supply current avoids loading weak standby supplies. | Use Scenario: Detecting transient overvoltage (>16 V) on automotive 12 V rail caused by load dump or alternator regulation failure. IC Role / Device Role / Timing Role: Comparator monitors scaled rail voltage; drives external MOSFET gate driver to disconnect sensitive loads within 500 ns. Use Value: 200 ns propagation delay ensures response before downstream ICs experience latch-up; AEC-Q100 qualification guarantees operation under harsh transients. |
| Window Comparator Input Stage | Level Translator for Sensor Interface |
Use Scenario: Implementing dual-threshold detection for cabin temperature control using NTC thermistor in HVAC system. IC Role / Device Role / Timing Role: LMV331QDBVRSV serves as lower-bound comparator in discrete window detector; paired with second LMV331QDBVRSV for upper bound. Use Value: Matched input offset and temperature coefficient (5 μV/°C) minimize hysteresis drift across –40°C to +85°C operating range. | Use Scenario: Converting analog output from 0–2.5 V pressure sensor to 0/5 V logic-compatible signal for engine control unit input. IC Role / Device Role / Timing Role: Comparator acts as rail-to-rail input level shifter; IN+ tied to sensor, IN− set to 1.25 V reference, OUT pulled to 5 V. Use Value: Open-collector output allows seamless 5 V logic interface without level-shifter IC; input range to GND accommodates sensor's 0 V minimum. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV331QDBVRQ1 | Identical electrical specs and AEC-Q100 Grade 1 rating; differs only in top-side marking (LADQ vs LADSV) and tape-and-reel packaging variant. | No functional difference; both qualified for same automotive use cases including battery monitoring and fault detection. | Select LMV331QDBVRQ1 if requiring TI's standard production reel (3000 pcs) with LADQ marking; LMV331QDBVRSV is functionally identical but may reflect alternate assembly lot trace code. |
| TLV331QDBVRQ1 | Lower supply current (55 μA typ), rail-to-rail input (extends to VCC+), but higher input offset (2.5–9 mV) and no guaranteed 125°C operation. | Preferred for ultra-low-power body electronics (e.g., door module wake-up detection); not recommended for under-hood applications above 105°C. | Choose TLV331QDBVRQ1 only for ambient-temperature interior modules where sub-60 μA current and full rail-to-rail input are critical; LMV331QDBVRSV remains superior for under-hood thermal robustness. |
Compared with LMV331QDBVRQ1, LMV331QDBVRSV offers identical performance and qualification - differing only in traceability marking - while TLV331QDBVRQ1 trades thermal range and offset stability for marginal current reduction, limiting its suitability to non-under-hood automotive domains.
Availability
LMV331QDBVRSV is available at Aetrix Electronics and suitable for automotive battery management, overvoltage protection, and sensor interface applications requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for LMV331QDBVRSV 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 electronics, with decades of leadership in high-reliability analog IC design.
The LMV331-Q1 product line delivers cost-effective, AEC-Q100-qualified comparators optimized for low-voltage, low-power automotive subsystems including body electronics, power management, and sensor signal conditioning.
FAQ
What is the operating temperature range for LMV331QDBVRSV?
The LMV331QDBVRSV is rated for operation from –40°C to +125°C and is AEC-Q100 Grade 1 qualified, making it suitable for under-hood automotive applications such as engine control units and battery disconnect modules where ambient temperatures exceed 105°C. This range is verified per TI's production test conditions and applies across the full supply voltage range of 2.7 V to 5.5 V.
Does LMV331QDBVRSV support rail-to-rail input operation?
The LMV331QDBVRSV supports input common-mode voltage from 0 V (GND) to VCC+ − 0.2 V, enabling true ground-sensing capability but not full rail-to-rail input (i.e., it does not accept signals at VCC+). This design allows direct interfacing with low-side shunt monitors and thermistor dividers without level shifting, while maintaining robustness against input overvoltage near the positive rail. LMV331QDBVRSV input stage is optimized for single-supply automotive systems.
What is the maximum sink current capability of LMV331QDBVRSV's open-collector output?
The LMV331QDBVRSV open-collector output can sink up to 23 mA at 25°C with VO ≤ 1.5 V (VCC+ = 2.7 V) and up to 84 mA at 25°C with VO ≤ 1.5 V (VCC+ = 5 V), per TI's Electrical Characteristics table. This allows direct driving of LEDs, small relays, or microcontroller interrupt lines with appropriate pull-up resistors. The LMV331QDBVRSV output stage is designed for robust sinking in noisy automotive environments without external buffering.
Is LMV331QDBVRSV pin-compatible with standard LM393 or LM339 comparators?
No, LMV331QDBVRSV is not pin-compatible with LM393 or LM339 due to its SOT-23-5 package and single-channel configuration, whereas LM393 uses SOIC-8 (dual) and LM339 uses SOIC-14 (quad). The LMV331QDBVRSV pinout (OUT, IN−, IN+, GND, VCC+) differs fundamentally from the 8-pin SOIC layout of LM393. System redesign is required to substitute LMV331QDBVRSV into legacy LM393 footprints.
What packaging and reel specifications apply to LMV331QDBVRSV?
LMV331QDBVRSV is supplied in SOT-23-5 (DBV) package, 3000-piece tape-and-reel format, with reel diameter 180 mm, reel width 8.4 mm, and pin-1 quadrant Q3 per JEDEC standard. It carries MSL Level-1 rating (unlimited floor life at ≤30°C/60% RH) and NIPDAU lead finish. These mechanical and packaging details ensure compatibility with high-speed SMT assembly lines used in automotive electronics manufacturing.
LMV331QDBVRSV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Open-Collector, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 5.5V
- :
- 7mV @ 5V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 84mA @ 5V
- Current - Output (Typ):
- 120µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 600ns (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-5
LMV331QDBVRSV FAQ
1.How can I place an order for LMV331QDBVRSV through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV331QDBVRSV 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 LMV331QDBVRSV reliable?
The price and inventory of LMV331QDBVRSV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV331QDBVRSV is usually 5 days.
3.What payment methods are accepted for LMV331QDBVRSV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV331QDBVRSV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV331QDBVRSV?
LMV331QDBVRSV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV331QDBVRSV 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 LMV331QDBVRSV?
For technical support, including LMV331QDBVRSV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV331QDBVRSV requirements.
6.How does Aetrix verify that LMV331QDBVRSV is sourced from the original manufacturer or authorized distributors?
All LMV331QDBVRSV 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 LMV331QDBVRSV meets industry standards.
7.What is the process for return or replacement of LMV331QDBVRSV?
All LMV331QDBVRSV units undergo pre-shipment inspection (PSI). If there is an issue with LMV331QDBVRSV, 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 LMV331QDBVRSV part is unused and in its original packaging.
Return procedure for LMV331QDBVRSV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV331QDBVRSV Tags
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