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Texas Instruments LMV7291MGX/NOPB
- Part No.:
- LMV7291MGX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV7291MGX/NOPB.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:10,235
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Product details
Overview
LMV7291MGX/NOPB from Texas Instruments is a single-channel rail-to-rail input low-power comparator optimized for 1.8 V operation, delivering 880 ns propagation delay (20 mV overdrive), 9 µA supply current, and 4 mV max input offset voltage. It serves as a precision threshold detector in battery-powered systems where ultra-low quiescent current and wide input common-mode range (–0.1 V to VCC + 0.1 V) are critical.
For engineers reviewing the LMV7291MGX/NOPB datasheet, LMV7291MGX/NOPB pinout, LMV7291MGX/NOPB application, or LMV7291MGX/NOPB equivalent, this device is selected for space-constrained, low-voltage sensing tasks requiring guaranteed performance down to 1.8 V supply, push-pull output drive without external pull-up, and stable operation across –40°C to +85°C.
Technical Context
The LMV7291MGX/NOPB employs a paralleled PNP/NPN input stage enabling true rail-to-rail input operation with crossover near 950 mV below VCC, and its push-pull CMOS output delivers rail-to-rail swing without external components. Input bias current is 10 nA and input offset current is 200 pA, supporting high-impedance sensor interfaces.
It is characterized across 1.8 V, 2.7 V, and 5.0 V supplies with consistent 9–14 µA supply current and 47–78 dB CMRR. Propagation delay increases with lower supply voltage (880 ns at 1.8 V, 2100 ns at 5.0 V for tPHL), reflecting optimized low-voltage timing behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V - supports 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 - enables >10-year battery life in always-on monitoring circuits with periodic wake-up. |
| Propagation Delay | 880 ns (tPHL, 20 mV overdrive, 1.8 V) - sufficient for slow analog signal edge detection (e.g., power-good assertion, battery voltage thresholds). |
| Input Offset Voltage (Max) | 4 mV - ensures reliable 20 mV overdrive margin in 1.8 V systems where reference voltages are sub-100 mV. |
| Input Common-Mode Range | –0.1 V to VCC + 0.1 V - allows direct sensing of signals at ground or near VCC, critical for supply rail monitoring. |
| Output Type | Push-pull CMOS - eliminates need for external pull-up resistor, reducing BOM count and board area in SC70 layout. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and portable consumer environments without derating. |
Pinout & Package
LMV7291MGX/NOPB is housed in a 5-pin SC70 (DCK) package - 2.0 mm × 1.25 mm footprint, 0.65 mm pitch - optimized for ultra-dense PCB layouts in handheld and wearable devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - V+ | Positive Supply Rail | Accepts 1.8–5.5 V; bypass capacitor (0.1 µF ceramic) must be placed adjacent to minimize supply noise-induced glitches. |
| 2 - IN− | Inverting Input | Differential input node; supports common-mode voltage down to –0.1 V, enabling ground-referenced threshold detection. |
| 3 - IN+ | Non-inverting Input | Differential input node; identical common-mode range as IN−; used for reference-based or hysteresis configurations. |
| 4 - GND | Ground Reference | Return path for supply and output; requires low-inductance connection to solid ground plane to suppress shoot-through transients. |
| 5 - OUT | Push-Pull Output | CMOS-compatible rail-to-rail output; sinks up to 6 mA / sources up to 6 mA at 1.8 V; no external pull-up required. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Enables direct interface to sensors or rails at 0 V or VCC, eliminating level-shifting circuitry in low-voltage monitoring. |
| 9 µA supply current (1.8 V) | Reduces system standby power by >5× versus comparable comparators, extending battery runtime in IoT endpoints. |
| Push-pull output architecture | Removes dependency on external pull-up resistors, saving PCB area and simplifying layout in space-critical SC70 designs. |
| Guaranteed 4 mV VOS max | Ensures deterministic switching at small overdrive levels (≥20 mV), critical for accurate low-voltage power sequencing. |
| SC70-5 (DCK) package | Delivers industry-leading 2.5 mm² footprint for single comparators, supporting miniaturized wearables and medical patches. |
Applications
| Battery Voltage Monitor | Power-Good Detector |
|---|---|
|
Use Scenario: Detecting when a single-cell Li-ion battery drops below 3.0 V to trigger low-battery warning or graceful shutdown. IC Role / Device Role / Timing Role: Threshold comparator comparing battery voltage against a precision reference; operates continuously in ultra-low-power mode. Use Value: 9 µA quiescent current extends system runtime between charges; rail-to-rail input allows direct sensing without resistor divider scaling. |
Use Scenario: Validating that a DC/DC converter output has stabilized within ±5% before enabling downstream logic. IC Role / Device Role / Timing Role: Precision window comparator (with hysteresis) asserting "PGOOD" after regulated rail reaches target and remains stable. Use Value: 4 mV VOS max ensures accurate trip point alignment with 100 mV hysteresis bands; push-pull output drives FPGA I/O directly. |
| Portable Device Wake-Up Sensor | Capacitive Touch Threshold Detector |
|
Use Scenario: Monitoring a microamp-level leakage current from a mechanical switch or ambient light sensor to initiate MCU wake-up. IC Role / Device Role / Timing Role: Ultra-low-IQ comparator amplifying weak analog events into clean digital interrupts for sleep-mode microcontrollers. Use Value: 10 nA input bias current prevents signal attenuation in high-Z sensor paths; SC70 package fits behind compact button assemblies. |
Use Scenario: Converting small capacitance changes (e.g., finger proximity) into binary touch/no-touch signals in wearables. IC Role / Device Role / Timing Role: Fast-response comparator digitizing AC-coupled oscillator amplitude shifts caused by finger coupling. Use Value: 880 ns propagation delay at 1.8 V supports >1 kHz sampling rates; rail-to-rail input accommodates full-swing oscillator signals. |
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 @ 1.8 V); 1.2 mV typical VOS; same SC70-5 package. | Better offset accuracy but 67% higher IQ; suited for precision thresholding where power is secondary. | Select TLV7211IDBVR if VOS < 1.5 mV is mandatory and 6 µA extra IQ is acceptable. |
| NCS2200SQ2T2G | Open-drain output; 12 µA IQ; wider supply range (0.85–6.0 V); SOT-23-5 package (larger than SC70). | Requires external pull-up; supports lower 0.85 V operation; less board-area efficient. | Select NCS2200SQ2T2G only if open-drain bus interfacing or sub-1.8 V operation is required. |
Compared with TLV7211IDBVR and NCS2200SQ2T2G, LMV7291MGX/NOPB uniquely balances ultra-low 9 µA supply current, rail-to-rail input, push-pull output, and SC70-5 footprint-making it optimal for battery-constrained, space-limited designs where both power and layout efficiency are non-negotiable.
Availability
LMV7291MGX/NOPB is available at Aetrix Electronics and suitable for battery voltage monitoring, power-good detection, and portable wake-up sensor applications requiring stable component supply across industrial and consumer production cycles.
Supply support for LMV7291MGX/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 conditioning and low-power design.
The LMV7291MGX/NOPB belongs to TI's LMV low-voltage analog portfolio, engineered specifically for energy-efficient sensing and decision-making in portable, battery-operated, and space-constrained electronic systems.
FAQ
What is the maximum supply voltage rating for LMV7291MGX/NOPB?
The absolute maximum supply voltage for LMV7291MGX/NOPB is 5.5 V, as specified in the Absolute Maximum Ratings table. Operation above this voltage risks permanent damage. The device is fully characterized and guaranteed over 1.8 V to 5.0 V, with electrical parameters validated at 1.8 V, 2.7 V, and 5.0 V supply conditions per the official TI datasheet SNOSA86E.
Does LMV7291MGX/NOPB support rail-to-rail input at 1.8 V supply?
Yes, LMV7291MGX/NOPB supports rail-to-rail input operation at 1.8 V supply, with an input common-mode voltage range from –0.1 V to VCC + 0.1 V (i.e., –0.1 V to 1.9 V). This is enabled by its paralleled PNP/NPN input stage and is explicitly verified in the Electrical Characteristics tables for 1.8 V operation.
What is the typical propagation delay of LMV7291MGX/NOPB at 1.8 V?
The typical propagation delay of LMV7291MGX/NOPB at 1.8 V is 880 ns for tPHL (high-to-low) and 1100 ns for tPLH (low-to-high), measured with 20 mV input overdrive and a 50 pF//5 kΩ load. These values are confirmed in the 1.8 V AC Electrical Characteristics section of the TI datasheet SNOSA86E.
Is LMV7291MGX/NOPB pin-compatible with other SC70-5 comparators?
No documented pin-to-pin compatibility exists between LMV7291MGX/NOPB and other SC70-5 comparators. Its pinout (V+, IN−, IN+, GND, OUT) is standard for single comparators in SC70, but functional differences (e.g., push-pull vs. open-drain output, input stage architecture) require validation per application. Always verify signal routing and load drive requirements before substitution.
What package type and marking does LMV7291MGX/NOPB use?
LMV7291MGX/NOPB uses the SC70-5 (DCK) package - 2.0 mm × 1.25 mm, 0.65 mm pitch - with part marking "C36" laser-etched on the top surface. This is confirmed in TI's PACKAGE OPTION ADDENDUM and the Connection Diagram (Figure 2) of datasheet SNOSA86E.
LMV7291MGX/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 ~ 5V, ±0.9V ~ 2.5V
- :
- 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):
- 1.8µs
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SC-70-5
LMV7291MGX/NOPB FAQ
1.How can I place an order for LMV7291MGX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV7291MGX/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 LMV7291MGX/NOPB reliable?
The price and inventory of LMV7291MGX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV7291MGX/NOPB is usually 5 days.
3.What payment methods are accepted for LMV7291MGX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV7291MGX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV7291MGX/NOPB?
LMV7291MGX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV7291MGX/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 LMV7291MGX/NOPB?
For technical support, including LMV7291MGX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV7291MGX/NOPB requirements.
6.How does Aetrix verify that LMV7291MGX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV7291MGX/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 LMV7291MGX/NOPB meets industry standards.
7.What is the process for return or replacement of LMV7291MGX/NOPB?
All LMV7291MGX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV7291MGX/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 LMV7291MGX/NOPB part is unused and in its original packaging.
Return procedure for LMV7291MGX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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