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Texas Instruments LMV7271MFX/NOPB
- Part No.:
- LMV7271MFX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMV7271MFX/NOPB.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:12,579
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Product details
Overview
LMV7271MFX/NOPB from Texas Instruments is a single-channel, rail-to-rail input, low-power comparator optimized for 1.8-V operation. It delivers 9 µA supply current per channel, 880 ns propagation delay (20-mV overdrive), and −0.1 V to V+ + 0.1 V input common-mode range - enabling precise voltage monitoring in battery-powered wearables and portable electronics.
For engineers reviewing the LMV7271MFX/NOPB datasheet, LMV7271MFX/NOPB pinout, LMV7271MFX/NOPB application, or LMV7271MFX/NOPB equivalent, key selection criteria include ultra-low quiescent current, push-pull output stage eliminating external pull-up resistors, guaranteed 4 mV input offset voltage, and SC70-5 package compatibility with space-constrained PCB layouts.
Technical Context
The LMV7271MFX/NOPB uses a paralleled PNP/NPN bipolar input stage to achieve rail-to-rail input operation down to −0.1 V below V− and up to 0.1 V above V+, supporting accurate sensing near ground and supply rails. Its CMOS push-pull output drives loads directly without external components while maintaining low power consumption.
It operates across 1.8 V to 5.5 V supply voltages, with input bias current of 10 nA and input offset current of 200 pA - enabling high-impedance signal conditioning. Propagation delay remains stable under capacitive loading but varies slightly with resistive load on the falling edge due to output stage dynamics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V - supports direct integration into Li-ion, coin-cell, and multi-rail systems without level-shifting. |
| Supply Current | 9 µA typical at 1.8 V - enables >1-year battery life in always-on sensor wake-up circuits. |
| Propagation Delay | 880 ns at 20-mV overdrive - ensures fast response for overvoltage/undervoltage detection in power management. |
| Input Offset Voltage | 4 mV max - guarantees reliable threshold detection with ≤1% error at 400-mV reference levels. |
| Input Common-Mode Range | −0.1 V to V+ + 0.1 V - allows direct sensing of signals at ground or rail edges without external biasing. |
| Output Type | Push-pull CMOS - eliminates need for external pull-up resistor, reducing BOM count and board area. |
| ESD Rating (HBM) | ±2000 V - meets IEC 61000-4-2 Level 2 for handheld device interface robustness. |
Pinout & Package
LMV7271MFX/NOPB is packaged in SC70-5 (1.25 mm × 2.00 mm), a space-optimized surface-mount package suitable for high-density portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN | Noninverting Input | High-impedance node accepting analog signals from sensors or dividers; supports rail-to-rail common-mode swing. |
| GND | Negative Supply | Reference return path for both input and output stages; must be low-inductance connection to minimize noise coupling. |
| −IN | Inverting Input | Differential input paired with +IN; matched layout critical for minimizing offset drift in precision threshold applications. |
| VOUT | CMOS Push-Pull Output | Active-high/low digital output driving logic inputs or MOSFET gates directly; no external pull-up required. |
| V+ | Positive Supply | Primary power rail; bypass capacitor (0.1 µF) required adjacent to pin to suppress shoot-through current transients. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Enables direct sensing of signals at 0 V or V+ without external level-shifting networks or bias resistors. |
| 9 µA supply current | Reduces system-level power budget by >50% versus comparable comparators, extending battery runtime in IoT endpoints. |
| Push-pull output | Eliminates external pull-up resistor, saving PCB area and component cost while improving rise/fall time consistency. |
| Low input bias current (10 nA) | Minimizes voltage drop across high-value divider resistors, preserving accuracy in high-impedance voltage monitor circuits. |
| Guaranteed 4 mV VOS | Ensures predictable switching thresholds across temperature and supply voltage, simplifying design margining. |
Applications
| Battery Voltage Monitor | Wearable Heart Rate Sensor Interface |
|---|---|
Use Scenario: Detecting low-battery condition in Bluetooth earbuds using a resistive divider from Li-ion cell to comparator input. IC Role / Device Role / Timing Role: Precision threshold detector comparing divided battery voltage against internal reference. Use Value: 9 µA quiescent current extends standby time; rail-to-rail input allows accurate 2.8-V cutoff detection without biasing circuitry. | Use Scenario: Converting photodiode amplifier output to digital pulse train for heart rate calculation in smartwatch. IC Role / Device Role / Timing Role: High-speed analog-to-digital front-end comparator with minimal propagation delay jitter. Use Value: 880 ns propagation delay ensures sub-millisecond timing resolution; low input bias current preserves signal integrity from high-Z transimpedance stage. |
| USB-C Power Delivery Status Indicator | Industrial Sensor Node Wake-Up Circuit |
Use Scenario: Monitoring CC line voltage to detect USB-C attachment and trigger host controller initialization. IC Role / Device Role / Timing Role: Fast-response comparator detecting 0.8-V to 2.0-V CC signaling thresholds. Use Value: Push-pull output drives microcontroller GPIO directly; 1.8-V operation matches modern low-voltage MCU I/O domains. | Use Scenario: Detecting motion-triggered analog signal from PIR sensor to wake microcontroller from deep sleep. IC Role / Device Role / Timing Role: Ultra-low-power wake-up comparator enabling <1 µA system standby current. Use Value: 9 µA supply current dominates total sleep-mode draw; guaranteed VOS ensures consistent trip point across temperature gradients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV7211IDBVR | Higher 15 µA supply current; 110 ns propagation delay; open-drain output requiring pull-up. | Better speed but higher power; requires external resistor for logic-level translation. | Select TLV7211IDBVR only when <200 ns response is mandatory and board area permits pull-up resistor. |
| MAX9021AXK+T | 1.2 µA supply current; 3 µs propagation delay; rail-to-rail input; SC70-5 package. | Lower power but significantly slower; suited for non-critical wake-up, not real-time monitoring. | Choose MAX9021AXK+T when multi-year battery life outweighs speed requirements, e.g., environmental data loggers. |
Compared with TLV7211IDBVR and MAX9021AXK+T, LMV7271MFX/NOPB uniquely balances ultra-low power (9 µA), moderate speed (880 ns), and push-pull output - making it optimal for compact, battery-powered devices needing reliable, resistor-free threshold detection.
Availability
LMV7271MFX/NOPB is available at Aetrix Electronics and suitable for wearable devices, battery-powered electronics, and mobile phone subsystems requiring stable component supply across production lifecycles.
Supply support for LMV7271MFX/NOPB 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 and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LMV727x family was designed specifically for low-voltage, low-power, space-constrained applications - emphasizing rail-to-rail input operation, nanoampere-level quiescent current, and miniature packaging for next-generation portable systems.
FAQ
What is the maximum operating supply voltage for LMV7271MFX/NOPB?
The LMV7271MFX/NOPB supports a maximum supply voltage of 5.5 V, with guaranteed operation across 1.8 V to 5.5 V. This range accommodates single-cell Li-ion (4.2 V), dual-cell alkaline (3.0 V), and regulated 3.3 V or 5 V rails - ensuring design flexibility without voltage scaling components. Absolute maximum rating is 6 V, but sustained operation above 5.5 V risks parametric degradation.
Does LMV7271MFX/NOPB require an external pull-up resistor on its output?
No, LMV7271MFX/NOPB features a CMOS push-pull output stage that actively drives both high and low states, eliminating the need for an external pull-up resistor. This reduces component count, PCB area, and potential noise from resistor thermal effects. The output swings rail-to-rail (V− to V+) under light loads, and maintains 1.74 V high-level output at 0.5 mA sink current when powered from 1.8 V.
What is the input common-mode voltage range specification for LMV7271MFX/NOPB?
The LMV7271MFX/NOPB has an input common-mode voltage range of −0.1 V to V+ + 0.1 V, verified across 1.8 V to 5.5 V supplies. This rail-to-rail capability enables direct interfacing with ground-referenced sensors or supply-rail monitors without external bias networks. At 1.8 V supply, inputs function reliably from −0.1 V to +1.9 V, supporting accurate undervoltage lockout at 0 V and overvoltage detection near V+.
How does the propagation delay of LMV7271MFX/NOPB vary with supply voltage?
Propagation delay increases with lower supply voltage: 880 ns at 1.8 V (20-mV overdrive), 1200 ns at 2.7 V, and 2100 ns at 5 V. This inverse relationship occurs because internal transistor drive strength decreases at lower VDD, slowing output slewing. Designers should verify timing margins at minimum system supply voltage - e.g., 880 ns suffices for 1-kHz battery monitor updates, but may limit >10-kHz sampling in fast control loops.
Is LMV7271MFX/NOPB pin-compatible with other comparators in the LMV727x family?
LMV7271MFX/NOPB shares identical pinout with LMV7275 in SC70-5 packages, but differs functionally: LMV7275 uses open-drain output requiring external pull-up, while LMV7271MFX/NOPB uses push-pull. Substituting LMV7275 for LMV7271MFX/NOPB requires schematic and layout changes to add pull-up resistor and verify logic-level compatibility. No pin-compatible alternatives exist outside the LMV727x family in SC70-5.
LMV7271MFX/NOPB 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:
- CMOS, Push-Pull, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 1.8V ~ 5.5V, ±0.9V ~ 2.75V
- :
- 4mV @ 5V
- Voltage - Input Offset (Max):
- 0.01µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 14µA
- Current - Quiescent (Max):
- 78dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 2.1µs
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-5
LMV7271MFX/NOPB FAQ
1.How can I place an order for LMV7271MFX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV7271MFX/NOPB 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 LMV7271MFX/NOPB reliable?
The price and inventory of LMV7271MFX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV7271MFX/NOPB is usually 5 days.
3.What payment methods are accepted for LMV7271MFX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV7271MFX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV7271MFX/NOPB?
LMV7271MFX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV7271MFX/NOPB 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 LMV7271MFX/NOPB?
For technical support, including LMV7271MFX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV7271MFX/NOPB requirements.
6.How does Aetrix verify that LMV7271MFX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV7271MFX/NOPB 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 LMV7271MFX/NOPB meets industry standards.
7.What is the process for return or replacement of LMV7271MFX/NOPB?
All LMV7271MFX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV7271MFX/NOPB, 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 LMV7271MFX/NOPB part is unused and in its original packaging.
Return procedure for LMV7271MFX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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