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Texas Instruments LMV331M5
- Part No.:
- LMV331M5
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMV331M5.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:857
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Product details
Overview
LMV331M5 from Texas Instruments is a single, low-voltage, rail-to-ground input comparator with open-collector output, 60 µA typical supply current per channel, 200 ns propagation delay at 5 V, and operation down to 2.7 V - used in battery-powered voltage monitoring and portable power management circuits.
For engineers reviewing the LMV331M5 datasheet, LMV331M5 pinout, LMV331M5 application, or LMV331M5 equivalent, key selection considerations include its ground-sensing input range (−0.1 V to 4.2 V at 5 V), low saturation voltage (200 mV at 4 mA sink), SC70-5/SOT23-5 package compatibility, and open-collector interface for wired-OR logic and level translation.
Technical Context
The LMV331M5 implements a bipolar-input, BiCMOS-output architecture optimized for low-voltage operation (2.7–5 V) and low quiescent current. Its input stage supports common-mode voltages extending 0.1 V below ground, enabling direct sensing of signals referenced to system ground.
It features an uncommitted NPN output transistor requiring external pull-up, supporting wired-OR configurations, TTL/CMOS interfacing, and flexible output voltage translation up to V+. Propagation delay is specified at 200 ns (typical, 100 mV overdrive, 5 V supply), with guaranteed performance across −40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5 V - enables direct use with Li-ion, 3.3 V, and 5 V rails without regulation. |
| Supply Current (typ) | 60 µA - allows continuous operation in multi-year battery-powered devices. |
| Propagation Delay (typ) | 200 ns at 5 V, 100 mV overdrive - supports medium-speed threshold detection in sensor interfaces and power sequencing. |
| Input Offset Voltage (max) | 9 mV over temperature - ensures reliable switching accuracy for ±10 mV-level thresholds. |
| Output Saturation Voltage | 200 mV at 4 mA sink - minimizes voltage drop when driving logic inputs or small loads directly. |
| Input Common-Mode Range | −0.1 V to 4.2 V at 5 V - permits ground-referenced signal comparison without level-shifting circuitry. |
| ESD Rating (HBM) | ±800 V - meets standard handling requirements for consumer electronics assembly. |
Pinout & Package
LMV331M5 is housed in a 5-pin SC70 package (2.00 mm × 1.25 mm), offering ~50% footprint reduction versus SOT23-5. The SC70 variant uses the DCK package code and shares pinout compatibility with LMV331-N in SC70.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | +IN | Noninverting input - accepts analog signals down to −0.1 V; primary decision node for high-output transition. |
| 2 | V− | Negative supply / ground reference - must be connected to system ground in single-supply operation. |
| 3 | −IN | Inverting input - typically used for reference voltage; determines switching threshold relative to +IN. |
| 4 | OUT | Open-collector NPN output - requires external pull-up resistor (1–10 kΩ) to define logic HIGH level and sink current. |
| 5 | V+ | Positive supply - supplies internal circuitry; also serves as upper limit for pull-up resistor connection. |
Key Features
| Feature | Design Value |
|---|---|
| Ground-sensing input stage | Supports input voltages 0.1 V below ground - eliminates need for negative bias or level shifters in ground-referenced sensing. |
| Open-collector output | Enables wired-OR logic, mixed-voltage interfacing, and flexible pull-up to any ≤V+ rail - simplifies multi-comparator systems and bus arbitration. |
| Low 60 µA supply current | Reduces standby power in always-on monitoring functions - critical for coin-cell and energy-harvesting applications. |
| 200 ns propagation delay | Provides timely response for fast-changing thresholds in power fault detection and overvoltage lockout circuits. |
| Industrial temperature range | Guaranteed operation from −40°C to +85°C - suitable for automotive cabin modules, industrial handhelds, and outdoor IoT sensors. |
Applications
| Battery Voltage Monitor | Power Sequencing Controller |
|---|---|
|
Use Scenario: Detecting low-battery condition in wearables or remote sensors before shutdown. IC Role / Device Role / Timing Role: Single comparator comparing battery voltage against a precision reference to assert LOW on OUT when threshold is crossed. Use Value: Enables accurate end-of-life warning with <10 µA added quiescent load and no external op-amp or ADC required. |
Use Scenario: Enabling downstream regulators only after upstream rail reaches stable voltage. IC Role / Device Role / Timing Role: Threshold detector generating enable signal with precise hysteresis to prevent chatter during ramp-up. Use Value: Ensures clean, glitch-free power-up sequence using only one LMV331M5, two resistors, and one capacitor - no microcontroller overhead. |
| Overvoltage Protection Circuit | Window Comparator Interface |
|
Use Scenario: Shutting off charging path if Li-ion cell voltage exceeds 4.3 V. IC Role / Device Role / Timing Role: High-side comparator monitoring cell voltage via resistor divider; drives MOSFET gate through pull-up. Use Value: Delivers sub-200 ns response to overvoltage events while consuming <60 µA - extends safety margin without compromising battery life. |
Use Scenario: Validating sensor output stays within acceptable bounds (e.g., temperature transducer). IC Role / Device Role / Timing Role: Paired with second LMV331M5 (or LMV393-N) to form window detector with independent upper/lower thresholds. Use Value: Achieves compact, low-power window detection using SC70 footprints - ideal for space-constrained medical or instrumentation PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single low-voltage comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV331DBVR | Lower input offset (1.5 mV max), higher ESD rating (2 kV HBM), same SC70-5 package and open-collector output. | Better accuracy-critical apps (e.g., precision reference monitoring); slightly higher cost. | Choose TLV331DBVR when <3 mV offset error is mandatory and budget allows premium spec. |
| LMV331IDBVR | Same silicon as LMV331M5 but qualified to AEC-Q100 Grade 3 (−40°C to +85°C), identical electrical specs and pinout. | Automotive interior modules where qualification compliance is required. | Choose LMV331IDBVR for automotive designs needing formal qualification - otherwise LMV331M5 suffices for industrial/consumer use. |
Compared with TLV331DBVR and LMV331IDBVR, the LMV331M5 offers baseline industrial-grade performance at lowest cost, with verified 200 ns timing and ground-sensing capability - making it optimal for cost-sensitive, space-constrained portable electronics where AEC-Q100 is not mandated.
Availability
LMV331M5 is available at Aetrix Electronics and suitable for battery voltage monitoring, power sequencing control, and overvoltage protection applications requiring stable component supply, long-lifecycle support, and consistent SC70-5 packaging.
Supply support for LMV331M5 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 expertise in precision signal conditioning and low-power design.
The LMV331M5 belongs to TI's general-purpose low-voltage comparator family, engineered specifically for space-constrained, battery-operated systems demanding ultra-low quiescent current and ground-referenced input capability.
FAQ
What is the maximum supply voltage for LMV331M5?
The absolute maximum supply voltage for LMV331M5 is 5.5 V, but the recommended operating range is 2.7 V to 5 V. Operation above 5 V risks permanent damage and invalidates all guaranteed specifications. At 5 V, LMV331M5 delivers optimal propagation delay (200 ns typ) and output drive capability (200 mV saturation at 4 mA).
Does LMV331M5 support rail-to-rail input?
LMV331M5 does not support full rail-to-rail input - its input common-mode range extends from −0.1 V to 4.2 V at 5 V supply (or −0.1 V to 2.0 V at 2.7 V). This "ground-sensing" capability allows inputs to go 0.1 V below ground, but the upper limit remains ~0.8 V below V+, unlike true rail-to-rail input comparators.
Can LMV331M5 drive a MOSFET gate directly?
Yes - LMV331M5's open-collector output can sink up to 23 mA (typ at 5 V), sufficient to charge/discharge small-to-medium gate capacitance (e.g., logic-level MOSFETs with Qg < 10 nC) when paired with a properly sized pull-up resistor (e.g., 10 kΩ to 3.3 V). For larger gates, add a buffer stage.
Is LMV331M5 pin-compatible with other SC70-5 comparators?
LMV331M5 shares the standard 5-pin SC70 pinout (V+, −IN, +IN, OUT, V−) with TI's TLV331DBVR and LMV331IDBVR, and is functionally compatible with most industry-standard SC70-5 comparators. However, always verify input offset, propagation delay, and ESD ratings - e.g., TLV331DBVR offers tighter offset but different AC specs.
What pull-up resistor value is recommended for LMV331M5?
Texas Instruments recommends a pull-up resistor between 1 kΩ and 10 kΩ for LMV331M5. A 4.7 kΩ resistor to 3.3 V provides ~0.7 mA sink current - balancing speed (lower R = faster rise time), power (higher R = lower static current), and noise immunity. Values outside this range may degrade propagation delay or increase susceptibility to leakage-induced false triggers.
LMV331M5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- CMOS, Open-Collector, TTL
- 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
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-5
LMV331M5 FAQ
1.How can I place an order for LMV331M5 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV331M5 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 LMV331M5 reliable?
The price and inventory of LMV331M5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV331M5 is usually 5 days.
3.What payment methods are accepted for LMV331M5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV331M5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV331M5?
LMV331M5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV331M5 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 LMV331M5?
For technical support, including LMV331M5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV331M5 requirements.
6.How does Aetrix verify that LMV331M5 is sourced from the original manufacturer or authorized distributors?
All LMV331M5 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 LMV331M5 meets industry standards.
7.What is the process for return or replacement of LMV331M5?
All LMV331M5 units undergo pre-shipment inspection (PSI). If there is an issue with LMV331M5, 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 LMV331M5 part is unused and in its original packaging.
Return procedure for LMV331M5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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