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Texas Instruments LMV7271MGX
- Part No.:
- LMV7271MGX
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV7271MGX.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,869
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Product details
Overview
LMV7271MGX 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 to V+ + 0.1 V input common-mode range - enabling precise threshold detection in battery-powered wearables and portable power monitors.
For engineers reviewing the LMV7271MGX datasheet, LMV7271MGX pinout, LMV7271MGX application, or LMV7271MGX equivalent, this page provides verified functional identity, SC70-5 package mapping, push-pull output behavior, supply-current vs. temperature curves, and direct alternatives with documented electrical and interface differences.
Technical Context
The LMV7271MGX 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+, with crossover near 950 mV from V+. Its CMOS push-pull output drives loads directly without external pull-ups, eliminating static current draw but requiring bypass capacitors to suppress shoot-through transients.
It operates across 1.8 V to 5.5 V supply, supports −40°C to +85°C ambient, and maintains 4 mV max input offset voltage with 20 µV/°C drift. Input bias current is 10 nA and input offset current is 200 pA - enabling high-impedance sensing in precision battery monitoring and low-voltage reference comparison.
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 embedded systems without level-shifting. |
| Supply Current (TYP) | 9 µA at 1.8 V - enables >1-year battery life in always-on wake-up comparators for IoT sensors. |
| Propagation Delay | 880 ns at 20-mV overdrive, 1.8 V - sufficient for 1-kHz window-comparator sampling in power sequencers. |
| Input Offset Voltage (MAX) | 4 mV - ensures ≤0.2% error in 2-V reference monitoring (e.g., 3.3-V LDO UVLO at 2.8 V). |
| Input Common-Mode Range | −0.1 V to V+ + 0.1 V - allows direct ground-referenced sensing and high-side supply rail monitoring. |
| Output Type | Push-pull CMOS - eliminates need for external pull-up, reducing BOM count and PCB 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
LMV7271MGX is packaged in a 5-pin SC70 (YZR) with nominal body size 1.25 mm × 2.00 mm. The package is moisture-sensitive level 1 (MSL-1) and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN | Noninverting Input | High-impedance node accepting analog signals from 0.1 V below GND to V+ + 0.1 V; bipolar input ensures low noise in sensor interfaces. |
| GND | Negative Supply Voltage | Reference return for both input stage and output driver; must be low-inductance connection to minimize ground bounce during switching. |
| −IN | Inverting Input | Differential input paired with +IN; matched bias current (10 nA) enables stable DC-coupled threshold detection. |
| VOUT | Output | CMOS push-pull stage sourcing/sinking ≥3.5 mA at 1.8 V; no external pull-up required, but bypass cap essential to suppress shoot-through noise. |
| V+ | Positive Supply Voltage | Primary power rail (1.8–5.5 V); supplies both input and output stages; requires local 0.1-µF ceramic decoupling adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input range | Operates with inputs from −0.1 V to V+ + 0.1 V - enables direct sensing of battery voltage down to 0 V and supply rails up to V+. |
| Ultra-low quiescent current | 9 µA typical at 1.8 V - reduces standby power in always-on wake-up circuits for wearable motion triggers. |
| Push-pull output | Eliminates external pull-up resistor - saves board space and avoids leakage-induced false triggering in high-impedance microcontroller GPIOs. |
| Low input offset drift | 20 µV/°C - maintains <10 mV total offset shift across −40°C to +85°C, critical for thermal-stable UVLO in industrial power modules. |
| Bipolar input stage | Delivers 10 nA input bias current and 200 pA offset current - preserves accuracy in high-resistance divider networks (e.g., 1-MΩ dividers for 12-V monitoring). |
Applications
| Wearable Device Power Monitoring | Portable Medical Sensor Threshold Detection |
|---|---|
Use Scenario: Detecting battery voltage drop below 2.7 V in a Bluetooth earbud to trigger low-power mode before shutdown. IC Role / Device Role / Timing Role: Single-supply comparator comparing divided battery voltage against internal 1.2-V reference; outputs active-low interrupt to MCU. Use Value: 9 µA supply current extends usable battery life by >15% versus 25-µA alternatives; rail-to-rail input ensures accurate 0-V-to-4.2-V tracking. | Use Scenario: Converting analog ECG signal peaks into digital pulses for heart-rate calculation in a patch-style monitor. IC Role / Device Role / Timing Role: High-speed zero-crossing detector with hysteresis, converting filtered AC-coupled ECG into clean TTL-level timing edges. Use Value: 880 ns propagation delay enables reliable pulse capture at 120 BPM; 10 nA input bias prevents signal distortion in 100-kΩ sensor interface. |
| USB-C Power Delivery Sequencing | Industrial PLC Input Thresholding |
Use Scenario: Validating VBUS presence and undervoltage lockout (UVLO) during USB-C port negotiation before enabling downstream 5-V regulators. IC Role / Device Role / Timing Role: Dual-threshold comparator monitoring VBUS via resistor divider; asserts enable signal only when 4.75 V < VBUS < 5.5 V. Use Value: 4 mV max VOS ensures ±0.1% UVLO accuracy; push-pull output directly drives logic-level MOSFET gate without pull-up. | Use Scenario: Detecting 24-V field sensor activation (e.g., proximity switch) and converting to 3.3-V logic for ARM-based controller input. IC Role / Device Role / Timing Role: Level-shifting comparator with resistive divider on +IN and 3.3-V reference on −IN; open-collector not used - push-pull output sinks 5 mA into MCU GPIO. Use Value: −0.1 V to 5.6 V input range accepts negative transients; 20 µV/°C drift maintains <15 mV total error across factory operating temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV7211DBVR | Higher supply current (17 µA), slower propagation (1.5 µs), same SC70-5 package and push-pull output. | Less suitable for sub-1-µA standby systems; acceptable where 1.8-V operation and rail-to-rail input are required but speed is secondary. | Select TLV7211DBVR only if LMV7271MGX is unavailable and design tolerates 88% higher quiescent current and 70% longer delay. |
| MAX9021AXK+T | Lower supply current (6 µA), faster propagation (450 ns), SOT-23-5 package, push-pull output, but only specified down to 2.5 V supply. | Not viable for true 1.8-V systems; requires minimum 2.5 V - incompatible with coin-cell or single-LiFePO4 operation. | Choose MAX9021AXK+T only for 2.5–5.5 V systems prioritizing speed and ultra-low current; avoid for 1.8-V designs. |
Compared with TLV7211DBVR and MAX9021AXK+T, the LMV7271MGX uniquely balances 1.8-V compatibility, 9-µA supply current, and 880-ns delay in SC70 - making it the only option among the three qualified for battery-gauge circuitry in sub-2-V energy-harvesting nodes.
Availability
LMV7271MGX is available at Aetrix Electronics and suitable for wearable device power monitoring, portable medical sensor threshold detection, and USB-C power delivery sequencing requiring stable component supply across long production lifecycles.
Supply support for LMV7271MGX 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 LMV727x family was engineered for ultra-low-voltage, space-constrained applications including wearables, portable instrumentation, and battery management - emphasizing rail-to-rail input operation, sub-10-µA quiescent current, and SC70/SOT-23 footprint efficiency.
FAQ
What is the maximum supply voltage rating for LMV7271MGX?
The absolute maximum supply voltage (V+ – V−) for LMV7271MGX is 6 V. Operation beyond this risks permanent damage. The recommended operating range is 1.8 V to 5.5 V, with full electrical specifications guaranteed across that span. At 5.5 V, the LMV7271MGX draws 16 µA typical supply current and maintains 4 mV max input offset voltage.
Does LMV7271MGX support dual-supply operation?
Yes, LMV7271MGX supports dual-supply operation with V+ and V− pins. The input common-mode range extends 0.1 V beyond both rails - e.g., with ±1.35 V supplies, inputs may swing from −1.45 V to +1.45 V. The output remains rail-to-rail relative to the applied supplies, and supply current remains 9 µA typical at ±1.35 V total (2.7 V).
What is the output drive capability of LMV7271MGX at 1.8 V?
At 1.8 V supply, LMV7271MGX sources 3.5 mA (VO = 0.9 V) and sinks 4 mA (VO = 0.9 V) while maintaining VOH ≥ 1.7 V and VOL ≤ 220 mV. This drive strength supports direct interfacing with 1.8-V logic families and small-signal MOSFET gates without external buffering.
Can LMV7271MGX be used with a 0 V to 1.8 V reference on the inverting input?
Yes - the LMV7271MGX input common-mode range includes 0 V when V− = 0 V and V+ = 1.8 V. With a 1.8-V supply, the −IN pin accepts DC references from 0 V to 1.9 V. For example, a resistor-divider from V+ generating 0.6 V on −IN enables precise 0.6-V threshold detection with 4 mV max offset error.
Is LMV7271MGX pin-compatible with LMV7275MGX?
No - LMV7271MGX and LMV7275MGX share the same SC70-5 package and pinout, but differ functionally: LMV7271MGX has a push-pull output, while LMV7275MGX has an open-drain output requiring an external pull-up. Swapping them without circuit modification will cause incorrect logic levels or bus contention.
LMV7271MGX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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
LMV7271MGX FAQ
1.How can I place an order for LMV7271MGX through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV7271MGX 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 LMV7271MGX reliable?
The price and inventory of LMV7271MGX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV7271MGX is usually 5 days.
3.What payment methods are accepted for LMV7271MGX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV7271MGX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV7271MGX?
LMV7271MGX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV7271MGX 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 LMV7271MGX?
For technical support, including LMV7271MGX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV7271MGX requirements.
6.How does Aetrix verify that LMV7271MGX is sourced from the original manufacturer or authorized distributors?
All LMV7271MGX 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 LMV7271MGX meets industry standards.
7.What is the process for return or replacement of LMV7271MGX?
All LMV7271MGX units undergo pre-shipment inspection (PSI). If there is an issue with LMV7271MGX, 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 LMV7271MGX part is unused and in its original packaging.
Return procedure for LMV7271MGX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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