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Texas Instruments LMV331IDBVT
- Part No.:
- LMV331IDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMV331IDBVT.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:275
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Product details
Overview
LMV331IDBVT from Texas Instruments is a single-channel, low-voltage, open-collector comparator optimized for portable and space-constrained applications. It operates from 2.7V to 5.5V, draws only 26μA typical supply current, features rail-to-rail input common-mode range including ground, and delivers 150mV typical output saturation voltage - enabling precise threshold detection in battery-powered vacuum robots and server PSUs.
For engineers reviewing the LMV331IDBVT datasheet, LMV331IDBVT pinout, LMV331IDBVT application, or LMV331IDBVT equivalent, key selection criteria include its SOT-23-5 package footprint, 7mV max input offset voltage at 25°C, 600ns propagation delay (high-to-low) at 5V with 100mV overdrive, and compatibility with logic-level pull-up voltages from 1V to 5V in level-shifting configurations.
Technical Context
The LMV331IDBVT implements a PNP-input stage enabling input common-mode operation down to ground and up to VCC–0.7V, making it suitable for single-supply systems with 3.3V or 5V rails. Its open-drain NPN output stage sinks current when IN– exceeds IN+, supporting wired-AND logic and flexible interface voltage translation.
It functions strictly as a voltage comparator with no internal hysteresis, requiring external design attention to noise immunity. Electrical performance is specified across –40°C to +125°C, with input bias current ≤400nA and output sink capability up to 84mA at 5V supply - validated under both 2.7V and 5V operating conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 5.5V - supports direct integration into 3.3V and 5V logic domains without level shifters. |
| Supply Current (TYP) | 26μA at 25°C - enables multi-year battery life in always-on sensing nodes. |
| Input Offset Voltage (MAX) | 7mV at 25°C - ensures reliable detection of small signal differentials above ~10mV. |
| Propagation Delay (tPHL) | 600ns at 5V, 100mV overdrive - suitable for sub-microsecond response timing in PSU fault detection. |
| Output Saturation Voltage | 150mV typical at 1.5mA sink - minimizes power loss and allows clean low-state definition with standard pull-ups. |
| Input Common-Mode Range | –0.1V to VCC–0.7V - permits ground-referenced inputs and compatibility with 0–4.2V sensor outputs. |
| ESD Rating (HBM) | ±2000V - meets industrial handling requirements without additional protection circuitry. |
Pinout & Package
SOT-23-5 package (1.60mm × 2.90mm body), surface-mount, moisture-sensitive level 1, RoHS-compliant with NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN+) | Non-inverting input | Accepts reference or signal voltage; common-mode range includes ground for single-supply use. |
| 2 (IN–) | Inverting input | Accepts monitored signal; differential comparison against IN+ determines output state. |
| 3 (OUT) | Open-drain output | Sinks current when IN– > IN+; requires external pull-up to define logic-high voltage (e.g., 1.8V, 3.3V, or 5V). |
| 4 (GND) | Ground reference | Return path for supply and input signals; must be low-impedance to minimize noise coupling. |
| 5 (VCC+) | Positive supply | Single power rail (2.7–5.5V); bypass capacitor recommended per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 26μA typical enables energy harvesting and coin-cell operation in always-on monitoring circuits. |
| Rail-to-rail input capability | Common-mode range includes ground and extends to VCC–0.7V - simplifies interfacing with 0–VCC sensors and DACs. |
| Open-collector output | Supports mixed-voltage system interfacing (e.g., 3.3V comparator driving 1.8V MCU interrupt line via appropriate pull-up). |
| Fast propagation delay | 200ns tPHL at 5V/100mV overdrive enables real-time overvoltage/undervoltage fault response in power supplies. |
| Wide temperature range | Specified from –40°C to +125°C - suitable for automotive cabin modules and industrial motor control enclosures. |
Applications
| Vacuum Robot Obstacle Detection | Server Power Supply Monitoring |
|---|---|
Use Scenario: Detecting proximity of obstacles using analog IR sensor output versus fixed threshold. IC Role / Device Role / Timing Role: Voltage comparator generating digital interrupt when IR voltage crosses preset level. Use Value: 26μA supply current extends battery runtime; rail-to-rail input accepts 0–3.3V sensor swing without signal conditioning. | Use Scenario: Monitoring +12V and +5V rails for overvoltage/undervoltage faults in ATX PSUs. IC Role / Device Role / Timing Role: Threshold detector triggering shutdown logic within <1µs of fault onset. Use Value: 600ns propagation delay at 5V ensures timely response; open-drain output interfaces directly with 3.3V supervisor ICs. |
| Cordless Power Tool Battery Protection | Smart Appliance Motor Control |
Use Scenario: Comparing cell voltage against 2.7V/cell cutoff during discharge to prevent deep discharge damage. IC Role / Device Role / Timing Role: Precision low-voltage threshold comparator in battery management subsystem. Use Value: 7mV max input offset ensures accurate 2.7V detection; –40°C to +125°C rating covers tool operational extremes. | Use Scenario: Monitoring hall-effect sensor outputs to detect rotor position in BLDC motor commutation. IC Role / Device Role / Timing Role: High-speed zero-crossing detector converting analog position feedback to digital timing edges. Use Value: 200ns tPHL at 100mV overdrive enables precise 20kHz+ commutation timing; low IQ reduces standby power in sleep modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV331IDCKR | Identical electrical specs; SC-70-5 package (1.25mm × 2.00mm), 0.25mm smaller footprint than SOT-23-5. | Better suited for ultra-dense PCB layouts where board area is constrained beyond SOT-23 limits. | Select LMV331IDCKR when minimizing footprint is critical and reflow profile supports SC-70 thermal mass. |
| TLV331IDBVR | Lower 17μA typical IQ, 5mV max VIO, same SOT-23-5 package; not drop-in due to different pinout (IN+/IN– swapped). | Requires PCB layout revision; preferred for ultra-low-power designs where 9μA IQ reduction justifies redesign. | Choose TLV331IDBVR only if supply current reduction is primary and layout modification is acceptable. |
Compared with LMV331IDBVT, LMV331IDCKR offers identical performance in a smaller package but with identical pinout, while TLV331IDBVR delivers lower power and offset at the cost of non-compatible pin assignment - making LMV331IDBVT the optimal choice for legacy SOT-23-5 designs requiring proven reliability and direct replacement capability.
Availability
LMV331IDBVT is available at Aetrix Electronics and suitable for vacuum robot obstacle detection, server PSU monitoring, and cordless power tool battery protection requiring stable component supply across extended production lifecycles.
Supply support for LMV331IDBVT 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.
The LMV331 series belongs to TI's general-purpose low-voltage comparator product line, engineered for cost-sensitive, space-constrained applications where low power, rail-to-rail input, and open-drain flexibility are essential - especially in portable and battery-operated systems.
FAQ
What is the operating temperature range for LMV331IDBVT?
The LMV331IDBVT is specified to operate across –40°C to +125°C ambient temperature. This range is validated per TI's recommended operating conditions and thermal metrics (RθJA = 238°C/W for DBV package), ensuring reliable performance in demanding environments such as motor control enclosures and automotive under-hood modules where the LMV331IDBVT serves as a fault-detection comparator.
Does LMV331IDBVT have internal hysteresis?
No, the LMV331IDBVT does not include internal hysteresis. Its functional mode is strictly voltage comparison with no built-in hysteresis circuitry. Designers must add external hysteresis via positive feedback if noise immunity is required - for example, by connecting a resistor from OUT to IN+ in applications like power supply UVLO where input transients could cause chatter. The LMV331IDBVT datasheet explicitly states this in Section 6.4.1.
What is the maximum sink current capability of LMV331IDBVT at 5V supply?
At VCC = 5V and TA = 25°C, the LMV331IDBVT can sink up to 84mA (maximum) while maintaining output saturation voltage ≤400mV. This value is specified in Section 5.7 of the datasheet under "Output current (sinking)" with VO ≤ 1.5V. In practice, continuous operation near this limit requires careful thermal management due to power dissipation in the output transistor.
Can LMV331IDBVT be used with a 1.8V pull-up voltage?
Yes, the LMV331IDBVT's open-drain output is fully compatible with 1.8V pull-up voltages. Since the output stage is a grounded NPN collector, the logic-high level is defined solely by the external pull-up voltage and does not depend on VCC. This enables direct interfacing with 1.8V MCUs or FPGAs - a key feature confirmed in Section 7.1 and Figure 7-1 of the LMV331IDBVT datasheet.
Is LMV331IDBVT pin-compatible with LM339 or LM393 comparators?
No, the LMV331IDBVT is not pin-compatible with LM339 or LM393. It is a single-channel device in SOT-23-5, whereas LM339 is quad (14-pin SOIC) and LM393 is dual (8-pin SOIC). Even the LMV393 (dual, SOT-23-8) uses a different pinout. Pin compatibility exists only within the LMV331 family (e.g., LMV331IDBVT and LMV331IDCKR share identical pin functions), as confirmed in Table 4-1 and the pin configuration diagrams.
LMV331IDBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- 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):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 84mA @ 5V
- Current - Output (Typ):
- 150µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 600ns
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-5
LMV331IDBVT FAQ
1.How can I place an order for LMV331IDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV331IDBVT 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 LMV331IDBVT reliable?
The price and inventory of LMV331IDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV331IDBVT is usually 5 days.
3.What payment methods are accepted for LMV331IDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV331IDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV331IDBVT?
LMV331IDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV331IDBVT 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 LMV331IDBVT?
For technical support, including LMV331IDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV331IDBVT requirements.
6.How does Aetrix verify that LMV331IDBVT is sourced from the original manufacturer or authorized distributors?
All LMV331IDBVT 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 LMV331IDBVT meets industry standards.
7.What is the process for return or replacement of LMV331IDBVT?
All LMV331IDBVT units undergo pre-shipment inspection (PSI). If there is an issue with LMV331IDBVT, 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 LMV331IDBVT part is unused and in its original packaging.
Return procedure for LMV331IDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV331IDBVT Tags
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LM2903DR
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LM339DR
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LM393DT
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