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Texas Instruments LMV7271MF/NOPB
- Part No.:
- LMV7271MF/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMV7271MF/NOPB.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,375
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Product details
Overview
LMV7271MF/NOPB from Texas Instruments is a single-channel, rail-to-rail input, low-power voltage 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 beyond-rail input common-mode range - enabling precise threshold detection in battery-powered wearables and portable electronics.
For engineers reviewing the LMV7271MF/NOPB datasheet, LMV7271MF/NOPB pinout, LMV7271MF/NOPB application, or LMV7271MF/NOPB equivalent, this page provides verified functional context, package-specific pin definitions, real-world timing behavior across supply voltages, and validated alternative options for low-voltage comparator selection.
Technical Context
The LMV7271MF/NOPB employs a paralleled PNP/NPN bipolar input stage to achieve rail-to-rail input operation from −0.1 V below V− to 0.1 V above V+, with crossover near 950 mV from V+. Its push-pull CMOS output drives loads directly without external pull-ups, minimizing system power but requiring local bypassing to suppress shoot-through current transients.
Propagation delay varies with supply voltage and overdrive: 880 ns at 1.8 V/20 mV, 1200 ns at 2.7 V/20 mV, and 2100 ns at 5 V/20 mV. Input offset voltage is ensured ≤4 mV (max) at 25°C and ≤6 mV across −40°C to +85°C, with 20 µV/°C typical drift.
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 (tPHL), 1100 ns (tPLH) at 20-mV overdrive, 1.8 V - sufficient for 1-MHz window comparators and power-good monitoring. |
| Input Offset Voltage | ≤4 mV (max, 25°C); ≤6 mV (max, −40°C to +85°C) - ensures reliable 10-mV threshold discrimination in precision voltage monitors. |
| Input Common-Mode Range | −0.1 V to V+ + 0.1 V - allows direct sensing of signals at ground or near supply rails, e.g., battery undervoltage detection. |
| Output Type | Push-pull CMOS - eliminates external pull-up resistor, reducing BOM count and board area in space-constrained designs. |
| ESD Rating (HBM) | ±2000 V - meets IEC 61000-4-2 Level 2 for handheld device front-end protection. |
Pinout & Package
LMV7271MF/NOPB is packaged in a 5-pin SOT-23 (DBV) with 1.60 mm × 2.90 mm body size, optimized for high-density PCB layouts in portable equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN (Pin 1) | Noninverting Input | Accepts analog signals from −0.1 V to V+ + 0.1 V; bipolar input stage enables low-noise, rail-to-rail operation. |
| GND (Pin 2) | Negative Supply | Reference node for single-supply operation; must be low-impedance to minimize noise coupling into input stage. |
| −IN (Pin 3) | Inverting Input | Differential input paired with +IN; matched bias current (10 nA typ.) minimizes offset error in resistive divider networks. |
| VOUT (Pin 4) | Output | CMOS push-pull stage drives loads directly to V+ or GND; no external pull-up required, reducing quiescent power. |
| V+ (Pin 5) | Positive Supply | Accepts 1.8–5.5 V; internal regulation ensures stable performance across battery discharge curves. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input range | Operates with inputs 0.1 V beyond both supply rails - enables direct monitoring of battery voltage down to 0 V and up to full charge. |
| Ultra-low 9-µA supply current | Reduces average current draw in duty-cycled wake-up circuits, extending shelf life of coin-cell-powered IoT sensors. |
| 880-ns propagation delay at 1.8 V | Supports fast response in power sequencing and overvoltage lockout circuits without compromising energy efficiency. |
| Low 10-nA input bias current | Minimizes voltage error in high-impedance reference dividers (e.g., 1 MΩ networks), preserving accuracy in precision thresholds. |
| 4-mV max input offset voltage | Ensures consistent switching point across temperature and unit-to-unit variation - critical for repeatable battery fuel-gauge triggers. |
Applications
| Wearable Health Monitor | Smartphone Power Management |
|---|---|
|
Use Scenario: Detecting battery voltage drop below 2.8 V to trigger low-power mode before shutdown. IC Role / Device Role / Timing Role: Threshold detector comparing battery voltage against internal reference; push-pull output directly asserts MCU interrupt line. Use Value: Eliminates external pull-up resistor and reduces total solution current by 5 µA versus open-drain alternatives. |
Use Scenario: Monitoring USB VBUS presence during OTG cable insertion to enable peripheral enumeration. IC Role / Device Role / Timing Role: Fast-response comparator detecting 4.4 V rise on VBUS; 880 ns delay ensures timely USB PHY initialization. Use Value: Rail-to-rail input captures VBUS from 0 V to 5.5 V without clamping diodes or level shifters. |
| Wireless Sensor Node | Industrial Battery Backup System |
|
Use Scenario: Waking an ultra-low-power MCU when ambient light exceeds 10 lux, using photodiode + transimpedance amplifier. IC Role / Device Role / Timing Role: Low-noise comparator with 10 nA bias current preserving signal integrity from high-Z photodiode output. Use Value: 9 µA quiescent current extends 5-year battery life in sealed environmental sensors. |
Use Scenario: Switching between main DC supply and backup supercapacitor when main rail falls below 11.5 V. IC Role / Device Role / Timing Role: Precision comparator with ≤6 mV offset across temperature ensuring reliable switchover within ±50 mV tolerance. Use Value: Beyond-rail input range allows direct sensing of 12-V rail with 5-V supply, avoiding resistive divider scaling errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3691IDBVR | Lower 320 nA supply current, but 3.5 µs propagation delay at 1.8 V - 4× slower than LMV7271MF/NOPB. | Better for nanowatt always-on wake-up; unsuitable for sub-microsecond timing-critical functions like power sequencing. | Select TLV3691IDBVR only when ultra-low current dominates speed requirements. |
| MAX9021AUT+T | Same 9 µA supply current and SOT-23-5 package, but open-drain output requires external pull-up and lacks rail-to-rail input (min VCM = 0.2 V above GND). | Compatible for simple logic-level translation, but cannot monitor signals near ground or supply rails without additional circuitry. | Choose MAX9021AUT+T only if open-drain wired-OR capability is required and input range constraints are acceptable. |
Compared with TLV3691IDBVR and MAX9021AUT+T, LMV7271MF/NOPB uniquely balances sub-microsecond speed, rail-to-rail input, and 9 µA consumption in a push-pull SOT-23 package - making it optimal for battery-powered systems needing both precision and responsiveness.
Availability
LMV7271MF/NOPB is available at Aetrix Electronics and suitable for wearable devices, smartphone power management, and wireless sensor nodes requiring stable component supply across long production lifecycles.
Supply support for LMV7271MF/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 focused on analog and embedded processing technologies, with decades of expertise in precision signal conditioning and low-power design.
The LMV727x family was engineered specifically for space- and energy-constrained portable electronics, delivering rail-to-rail input performance at 1.8-V operation without sacrificing speed or accuracy.
FAQ
What is the maximum operating supply voltage for LMV7271MF/NOPB?
The absolute maximum supply voltage for LMV7271MF/NOPB is 6 V, but the recommended operating range is 1.8 V to 5.5 V. Operation at 5.5 V maintains full rail-to-rail input functionality and ensures guaranteed performance per the datasheet's electrical characteristics tables across temperature.
Does LMV7271MF/NOPB support true rail-to-rail input, and how is that implemented?
Yes, LMV7271MF/NOPB supports true rail-to-rail input from −0.1 V below V− to 0.1 V above V+, achieved via paralleled PNP and NPN differential input pairs. This architecture enables direct sensing of signals at ground or near V+ - critical for battery voltage monitoring and zero-crossing detection without external level shifting.
Can LMV7271MF/NOPB drive capacitive loads without instability?
Yes - the LMV7271MF/NOPB push-pull output is stable with capacitive loads up to at least 50 pF (per typical characterization), and propagation delay remains unaffected. However, resistive loads impact falling-edge delay slightly, and layout best practices (short traces, local 0.1 µF bypass) are essential to suppress shoot-through current transients.
What is the input offset voltage specification for LMV7271MF/NOPB over temperature?
LMV7271MF/NOPB has a maximum input offset voltage of 4 mV at 25°C and 6 mV across the full −40°C to +85°C operating range. Its typical offset temperature drift is 20 µV/°C, ensuring predictable, bounded error in precision threshold applications such as battery end-of-discharge detection.
Is LMV7271MF/NOPB pin-compatible with other comparators in the LMV727x family?
LMV7271MF/NOPB shares the same 5-pin SOT-23 pinout with LMV7275MF/NOPB, but differs functionally: LMV7271MF/NOPB uses a push-pull output, while LMV7275MF/NOPB uses open-drain. Swapping them requires circuit revision - specifically, removing the pull-up resistor when replacing LMV7275MF/NOPB with LMV7271MF/NOPB.
LMV7271MF/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
LMV7271MF/NOPB FAQ
1.How can I place an order for LMV7271MF/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV7271MF/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 LMV7271MF/NOPB reliable?
The price and inventory of LMV7271MF/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV7271MF/NOPB is usually 5 days.
3.What payment methods are accepted for LMV7271MF/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV7271MF/NOPB transactions.
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4.How is shipping managed for LMV7271MF/NOPB?
LMV7271MF/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV7271MF/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 LMV7271MF/NOPB?
For technical support, including LMV7271MF/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV7271MF/NOPB requirements.
6.How does Aetrix verify that LMV7271MF/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV7271MF/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 LMV7271MF/NOPB meets industry standards.
7.What is the process for return or replacement of LMV7271MF/NOPB?
All LMV7271MF/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV7271MF/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 LMV7271MF/NOPB part is unused and in its original packaging.
Return procedure for LMV7271MF/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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