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Texas Instruments LMV7271MG/NOPB
- Part No.:
- LMV7271MG/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV7271MG/NOPB.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,534
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Product details
Overview
LMV7271MG/NOPB from Texas Instruments is a rail-to-rail input, low-power voltage comparator in SC70-5 package, delivering 9 µA supply current, 880 ns propagation delay (20-mV overdrive), and ±0.1 V beyond-rail input common-mode range at 1.8 V supply. It serves as a precision threshold detector in battery-powered wearables and power monitoring circuits where ultra-low quiescent current and sub-1-V operation are critical.
For engineers reviewing the LMV7271MG/NOPB datasheet, LMV7271MG/NOPB pinout, LMV7271MG/NOPB application, or LMV7271MG/NOPB equivalent, this page provides verified functional identity, validated SC70-5 pin mapping, confirmed 1.8–5.5 V operating range, rail-to-rail input stage behavior, push-pull output architecture, and two technically documented alternative comparators for low-voltage sensing designs.
Technical Context
The LMV7271MG/NOPB employs a paralleled PNP/NPN bipolar input stage enabling −0.1 V to V+ + 0.1 V input common-mode range-critical for sensing near ground or supply rails. Its push-pull CMOS output delivers rail-to-rail swing without external pull-up, minimizing system-level power overhead.
It achieves 880 ns propagation delay at 1.8 V with 20-mV overdrive and maintains 4 mV max input offset voltage across temperature. The device is characterized across 1.8 V, 2.7 V, and 5 V supplies, with supply current scaling from 9 µA (1.8 V) to 14 µA (5 V) typical, and supports operation from –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct integration into single-cell Li-ion, coin-cell, and multi-rail systems without level-shifting. |
| Supply Current (Typ) | 9 µA at 1.8 V - reduces battery drain in always-on sensing nodes; increases to 14 µA at 5 V with minimal slope. |
| Propagation Delay | 880 ns (tPHL, 20-mV overdrive, 1.8 V) - supports fast response in power-good detection and wake-up trigger applications. |
| Input Offset Voltage (Max) | 4 mV - ensures reliable 10-mV-level threshold discrimination without calibration in portable sensor interfaces. |
| Input Common-Mode Range | −0.1 V to V+ + 0.1 V - allows direct sensing of signals at ground or supply rails, e.g., battery voltage monitoring down to 0 V. |
| Output Type | Push-pull CMOS - eliminates need for external pull-up resistor, simplifying PCB layout and reducing BOM count. |
| ESD Rating (HBM) | ±2000 V - meets IEC 61000-4-2 Level 2 requirements for handheld and wearable end-equipment. |
Pinout & Package
LMV7271MG/NOPB is packaged in SC70-5 (1.25 mm × 2.00 mm), a space-constrained surface-mount package optimized for high-density portable PCBs. Pin 1 is +IN; Pin 2 is GND; Pin 3 is −IN; Pin 4 is VOUT; Pin 5 is V+.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN (Pin 1) | Noninverting Input | Accepts analog signal to be compared against reference; supports rail-to-rail common-mode range including below GND. |
| GND (Pin 2) | Negative Supply Terminal | Reference node for both input stage and output swing; must be low-impedance for stable noise performance. |
| −IN (Pin 3) | Inverting Input | Receives reference voltage or feedback signal; differential input pair enables precise hysteresis implementation. |
| VOUT (Pin 4) | CMOS Push-Pull Output | Drives logic-high to V+ and logic-low to GND directly; no external pull-up required; compatible with 1.8-V/3.3-V logic. |
| V+ (Pin 5) | Positive Supply Terminal | Supplies bias for input and output stages; accepts 1.8–5.5 V; bypass capacitor (0.1 µF) mandatory per datasheet layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Supports input voltages from −0.1 V to V+ + 0.1 V, enabling direct sensing of battery voltage, rail monitors, and zero-crossing signals without attenuation. |
| Ultra-low 9-µA supply current | Extends battery life in always-on wearables and IoT edge sensors; current remains stable across temperature and supply voltage. |
| 880-ns propagation delay at 1.8 V | Enables real-time response in power sequencing, overvoltage lockout, and fast wake-up circuits without sacrificing power efficiency. |
| 4-mV max input offset voltage | Guarantees consistent trip-point accuracy across production lots and temperature, reducing need for system-level trimming. |
| Bipolar input / CMOS output architecture | Combines low-noise bipolar front-end with rail-to-rail CMOS output swing, optimizing SNR and interface compatibility simultaneously. |
Applications
| Wearable Heart-Rate Monitor | Smartwatch Power-Good Detection |
|---|---|
Use Scenario: Detecting small-amplitude photoplethysmography (PPG) signal peaks above dynamic baseline in ultra-low-power wearable. IC Role / Device Role / Timing Role: Threshold comparator converting analog PPG waveform into clean digital pulse train for MCU interrupt triggering. Use Value: 9 µA quiescent current extends coin-cell lifetime beyond 6 months; rail-to-rail input captures full PPG swing from near-ground to 1.8 V supply. |
Use Scenario: Validating stable 3.3 V LDO output before enabling RF subsystem in smartwatch boot sequence. IC Role / Device Role / Timing Role: Precision voltage monitor asserting "power-good" flag when LDO output rises above 3.1 V with hysteresis. Use Value: 4 mV max VOS ensures accurate 3.1 V trip point; push-pull output drives MCU GPIO directly without pull-up resistor. |
| Wireless Earbud Battery Protection | Portable Medical Glucose Meter |
Use Scenario: Monitoring lithium-polymer cell voltage during charging/discharging to trigger under-voltage lockout at 3.0 V. IC Role / Device Role / Timing Role: Low-voltage cutoff comparator interfacing directly to battery terminal with no level-shifting. Use Value: −0.1 V to V+ + 0.1 V input range allows direct connection to battery anode/cathode; 1.8 V operation supports single-cell architecture. |
Use Scenario: Converting electrochemical sensor output into binary pass/fail result based on calibrated glucose concentration threshold. IC Role / Device Role / Timing Role: Analog-to-digital decision element in disposable test-strip reader with strict power budget. Use Value: 880 ns delay enables rapid strip-read cycle; SC70-5 footprint saves >30% board area vs. SOT-23 in compact handheld housing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV7211IDBVR | Higher supply current (15 µA typ), slower propagation (1.2 µs at 1.8 V), same SC70-5 package and rail-to-rail input. | Less suitable for sub-1-µA sleep-mode wake-up; acceptable for less time-critical battery monitoring. | Choose TLV7211IDBVR if lower cost is prioritized over propagation speed and quiescent current. |
| MAX9021AXK+T | Lower supply current (600 nA), but limited input range (0 V to V+ − 0.2 V); SOT-23-5 package only. | Not usable for sub-ground sensing; requires external bias for true rail-to-rail input; better for ultra-long-life storage monitoring. | Choose MAX9021AXK+T only when nanowatt operation dominates and input range constraints are acceptable. |
Compared with TLV7211IDBVR and MAX9021AXK+T, LMV7271MG/NOPB uniquely balances ultra-low 9-µA supply current, 880-ns speed, and true beyond-rail input capability in SC70-5-making it optimal for space-constrained, battery-sensitive designs requiring precision near-ground sensing.
Availability
LMV7271MG/NOPB is available at Aetrix Electronics and suitable for wearable devices, battery-powered electronics, and portable medical instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LMV7271MG/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 specializing in analog and embedded processing technologies, with decades of expertise in precision signal chain components and low-power design.
The LMV727x family was engineered specifically for ultra-low-voltage, low-power sensing applications-including wearables, portable diagnostics, and energy-harvesting systems-where rail-to-rail input, sub-10-µA quiescent current, and SC70 packaging are essential.
FAQ
What is the maximum supply voltage rating for LMV7271MG/NOPB?
The absolute maximum supply voltage (V+ − V−) for LMV7271MG/NOPB is 6 V, per the Absolute Maximum Ratings table. Operation beyond this risks permanent damage. Recommended operating range is 1.8 V to 5.5 V, with full electrical specifications guaranteed across that span. LMV7271MG/NOPB must never be subjected to reverse polarity or transient overvoltage exceeding these limits.
Does LMV7271MG/NOPB support input voltages below ground?
Yes, LMV7271MG/NOPB supports input common-mode voltages down to −0.1 V relative to GND (Pin 2), as confirmed in the 1.8-V Electrical Characteristics table and Feature Description section. This "beyond-rail" capability enables direct sensing of signals referenced to negative offsets or battery cathodes without level-shifting circuitry.
What output configuration does LMV7271MG/NOPB use?
LMV7271MG/NOPB features a push-pull CMOS output stage-not open-drain-enabling rail-to-rail output swing (VOUT = V+ or GND) without external pull-up resistors. This is explicitly stated in the Description section and Functional Block Diagram notes, distinguishing it from the LMV7275 variant which uses open-drain.
Can LMV7271MG/NOPB operate from a single 1.8-V supply?
Yes, LMV7271MG/NOPB is fully specified and characterized for 1.8-V single-supply operation, with all key parameters-including 9 µA supply current, 880 ns propagation delay, and 4 mV max VOS-guaranteed at V+ = 1.8 V and V− = 0 V. Its rail-to-rail input and output make it ideal for single-cell Li-ion and coin-cell applications.
Is LMV7271MG/NOPB pin-compatible with other comparators in the LMV727x family?
No-LMV7271MG/NOPB (SC70-5) shares pinout with LMV7275 but differs functionally from LMV7272 (DSBGA-8, dual-channel). While LMV7271 and LMV7275 both use SC70-5/SOT-23-5 packages with identical pin assignments (+IN, GND, −IN, VOUT, V+), LMV7272 has different pin count and layout. LMV7271MG/NOPB is not pin-compatible with LMV7272 or unrelated comparators like TLV3691.
LMV7271MG/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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
- :
- SC-70-5
LMV7271MG/NOPB FAQ
1.How can I place an order for LMV7271MG/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV7271MG/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 LMV7271MG/NOPB reliable?
The price and inventory of LMV7271MG/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV7271MG/NOPB is usually 5 days.
3.What payment methods are accepted for LMV7271MG/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV7271MG/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV7271MG/NOPB?
LMV7271MG/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV7271MG/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 LMV7271MG/NOPB?
For technical support, including LMV7271MG/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV7271MG/NOPB requirements.
6.How does Aetrix verify that LMV7271MG/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV7271MG/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 LMV7271MG/NOPB meets industry standards.
7.What is the process for return or replacement of LMV7271MG/NOPB?
All LMV7271MG/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV7271MG/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 LMV7271MG/NOPB part is unused and in its original packaging.
Return procedure for LMV7271MG/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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