My Inquiry
My Account
Texas Instruments LMV331QDBVRQ1
- Part No.:
- LMV331QDBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMV331QDBVRQ1.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,841
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMV331QDBVRQ1 from Texas Instruments is an automotive-grade single open-collector comparator operating from 2.7 V to 5.5 V, featuring 60 μA typical supply current, 200 mV typical output saturation voltage at 1 mA, and input common-mode range extending to ground. It is used in battery monitoring circuits for electric power steering (EPS) and body control modules where low-voltage detection and rail-to-rail input capability are essential.
For engineers reviewing the LMV331QDBVRQ1 datasheet, LMV331QDBVRQ1 pinout, LMV331QDBVRQ1 application, or LMV331QDBVRQ1 equivalent, key selection criteria include its AEC-Q100 qualification, SOT-23-5 package footprint, open-collector output flexibility with external pull-up, and guaranteed operation across –40°C to +125°C ambient temperature.
Technical Context
The LMV331QDBVRQ1 implements a bipolar input stage with rail-to-ground common-mode input range and an NPN open-collector output stage. Its internal architecture supports fast propagation delays - 600 ns tPHL and 450 ns tPLH at 5 V with 100 mV overdrive - while maintaining low quiescent current across automotive temperature extremes.
It operates as a single-supply comparator with no internal hysteresis, requiring external feedback for noise immunity. The device's input offset voltage is specified at 1.7–7 mV (typ/max) at 25°C and exhibits 5 μV/°C average drift over –40°C to +125°C, enabling stable threshold detection in thermally varying environments.
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. |
| Supply Current (ICC) | 60 μA typ at 25°C - enables multi-year battery life in always-on vehicle subsystems. |
| Input Offset Voltage (VIO) | 1.7–7 mV typ/max at 25°C - ensures accurate voltage threshold comparison in sensor interface circuits. |
| Output Saturation Voltage (VSAT) | 200 mV typ at IO = 1 mA - minimizes voltage drop when sinking load current into logic or LED drivers. |
| Propagation Delay | 450–600 ns (tPLH/tPHL) at 5 V - suitable for real-time fault detection in motor control and safety-critical signaling. |
| Common-Mode Input Range | 0 V to VCC+ − 0.8 V - allows direct sensing of ground-referenced signals like battery voltage or thermistor dividers. |
| Operating Temperature | –40°C to +125°C - qualified per AEC-Q100 Grade 1 for under-hood and cabin electronics. |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 1.6 mm × 1.45 mm profile, surface-mount, lead-free (NIPDAU), moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Open-collector output | Sinks current only; requires external pull-up resistor to define high-level voltage and logic family compatibility. |
| 2 (IN−) | Inverting input | Accepts reference or feedback signal; differential input voltage range ±5.5 V relative to IN+. |
| 3 (IN+) | Non-inverting input | Accepts sensed signal (e.g., battery voltage divider); common-mode range includes ground. |
| 4 (GND) | Ground reference | Return path for supply and inputs; must be low-impedance to minimize offset error and noise coupling. |
| 5 (VCC+) | Positive supply | Single supply input; powers internal circuitry and defines upper output voltage limit via external pull-up. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Grade 1 (–40°C to +125°C) qualification enables use in safety-critical automotive ECUs without additional reliability screening. |
| Open-collector output | Allows wired-OR logic, level translation across voltage domains, and direct interface to LEDs or microcontroller interrupt pins. |
| Ground-sensing input | Input common-mode range includes 0 V, enabling direct comparison of signals referenced to chassis ground without level-shifting. |
| Low supply current | 60 μA typical ICC reduces thermal load and extends battery runtime in always-on vehicle subsystems such as door modules. |
| Fast propagation delay | Sub-microsecond response at 5 V supports real-time overvoltage/undervoltage fault detection in motor drivers and DC-DC converters. |
Applications
| Battery Voltage Monitoring | Motor Overcurrent Detection |
|---|---|
|
Use Scenario: Detecting 12 V battery undervoltage (<10.5 V) and overvoltage (>15.5 V) in body control modules. IC Role / Device Role / Timing Role: Single comparator compares scaled battery voltage against precision reference to assert fault flag. Use Value: Enables fail-safe shutdown before brownout resets MCU or damages downstream 3.3 V logic. |
Use Scenario: Monitoring shunt voltage across H-bridge motor driver to detect stall or short-circuit conditions. IC Role / Device Role / Timing Role: Comparator triggers immediate hardware interrupt on current exceedance, bypassing software latency. Use Value: Prevents MOSFET thermal runaway by initiating gate shutdown within <1 µs of overcurrent event. |
| Window Comparator Interface | LED Status Indicator Driver |
|
Use Scenario: Implementing dual-threshold detection for HVAC blower speed control using thermistor feedback. IC Role / Device Role / Timing Role: One LMV331QDBVRQ1 serves as lower threshold detector; paired with second unit for upper threshold. Use Value: Eliminates need for op-amp-based window comparator, reducing BOM count and PCB area in space-constrained modules. |
Use Scenario: Driving status LEDs in instrument clusters with variable brightness based on CAN bus activity. IC Role / Device Role / Timing Role: Comparator output sinks LED current directly through open-collector stage with 200 mV saturation loss. Use Value: Reduces component count by eliminating discrete transistor driver; supports 5 mA sink capability at full temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single open-collector comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV331QDBVRQ1 | CMOS input stage; 25 nA max input bias current vs. 250 nA for LMV331QDBVRQ1; 50 μA supply current. | Better for high-impedance sensor interfaces (e.g., pH probes); less suitable for noisy automotive harnesses due to higher ESD susceptibility. | Select TLV331QDBVRQ1 when ultra-low input bias current is required and system-level ESD protection is added externally. |
| LM393QPWRQ1 | Dual comparator in TSSOP-8; 100 μA supply current per channel; wider 2–36 V supply range; no ground-sensing input. | Requires level-shifting for ground-referenced inputs; better suited for legacy 12 V systems with higher supply margins. | Choose LM393QPWRQ1 when dual-channel functionality and higher supply tolerance outweigh footprint and ground-sensing needs. |
Compared with TLV331QDBVRQ1 and LM393QPWRQ1, the LMV331QDBVRQ1 offers optimal balance of ground-sensing capability, AEC-Q100 qualification, and low-power operation in compact SOT-23-5 - making it preferred for new automotive designs prioritizing size, accuracy at low voltages, and thermal robustness.
Availability
LMV331QDBVRQ1 is available at Aetrix Electronics and suitable for battery management systems, motor control units, lighting control modules, and body electronics requiring stable component supply across automotive production lifecycles.
Supply support for LMV331QDBVRQ1 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for automotive, industrial, and personal electronics markets.
The LMV331-Q1 belongs to TI's automotive-qualified low-voltage comparator product line, designed specifically for cost-sensitive, space-constrained automotive subsystems requiring reliable threshold detection at 2.7–5.5 V.
FAQ
What is the maximum output sink current specification for LMV331QDBVRQ1?
The LMV331QDBVRQ1 supports up to 23 mA sink current at VO ≤ 1.5 V and 25°C, with derating to 5 mA minimum across –40°C to +125°C. This enables direct driving of small relays, optocouplers, or logic inputs without external buffering. The LMV331QDBVRQ1 output stage remains functional even under sustained 10 mA loads at full temperature range, supporting robust fault-signaling in automotive ECUs.
Does LMV331QDBVRQ1 include internal hysteresis?
No, the LMV331QDBVRQ1 does not include internal hysteresis. Its input stage is optimized for precision threshold detection, requiring external positive feedback (e.g., resistor from OUT to IN+) to implement noise-immune hysteresis. This design gives system designers full control over hysteresis width and avoids fixed offsets that could compromise accuracy in critical automotive sensing applications involving the LMV331QDBVRQ1.
Can LMV331QDBVRQ1 operate from a 3.3 V supply in automotive environments?
Yes, the LMV331QDBVRQ1 is fully specified for 2.7 V to 5.5 V operation and functions reliably at 3.3 V across –40°C to +125°C. At 3.3 V, it delivers 60 μA typical supply current, 200 mV typical output saturation voltage, and maintains 1.7–7 mV input offset voltage - making it ideal for 3.3 V domain interfaces in modern automotive microcontrollers and sensor nodes using the LMV331QDBVRQ1.
What is the meaning of the top-side marking 'LADQ' on LMV331QDBVRQ1?
The top-side marking 'LADQ' identifies the LMV331QDBVRQ1 as a Texas Instruments automotive-qualified device in SOT-23-5 (DBV) package. The 'Q' suffix confirms AEC-Q100 qualification, and 'LADQ' is the standardized TI die code for this specific wafer lot and assembly site. This marking is consistent across all LMV331QDBVRQ1 reels and enables traceability to manufacturing origin and process flow for the LMV331QDBVRQ1.
How does the input common-mode range of LMV331QDBVRQ1 benefit automotive designs?
The LMV331QDBVRQ1 features an input common-mode range that includes ground (0 V), allowing direct comparison of signals referenced to chassis ground - such as battery voltage dividers or thermistor networks - without level-shifting circuitry. This simplifies PCB layout, reduces component count, and improves accuracy in automotive applications where ground-referenced sensing is pervasive, including those using the LMV331QDBVRQ1 for EPS or HVAC control.
LMV331QDBVRQ1 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
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 5.5V
- :
- 7mV @ 5V
- Voltage - Input Offset (Max):
- 0.025µA @ 5V
- Current - Input Bias (Max):
- 84mA @ 5V
- Current - Output (Typ):
- 150µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 600ns
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- SOT-23-5
LMV331QDBVRQ1 FAQ
1.How can I place an order for LMV331QDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV331QDBVRQ1 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 LMV331QDBVRQ1 reliable?
The price and inventory of LMV331QDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV331QDBVRQ1 is usually 5 days.
3.What payment methods are accepted for LMV331QDBVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV331QDBVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV331QDBVRQ1?
LMV331QDBVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV331QDBVRQ1 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 LMV331QDBVRQ1?
For technical support, including LMV331QDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV331QDBVRQ1 requirements.
6.How does Aetrix verify that LMV331QDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All LMV331QDBVRQ1 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 LMV331QDBVRQ1 meets industry standards.
7.What is the process for return or replacement of LMV331QDBVRQ1?
All LMV331QDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LMV331QDBVRQ1, 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 LMV331QDBVRQ1 part is unused and in its original packaging.
Return procedure for LMV331QDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV331QDBVRQ1 Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP Semiconductors
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
