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Texas Instruments LMC6772AIMMX
- Part No.:
- LMC6772AIMMX
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMC6772AIMMX.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,849
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Product details
Overview
LMC6772AIMMX from Texas Instruments is a dual micropower rail-to-rail input CMOS comparator with open-drain output, designed for ultra-low-power battery-operated systems. It delivers 10μA max supply current per comparator, operates from 2.7V to 15V, and supports rail-to-rail input common-mode voltage range exceeding both supply rails - enabling direct sensing near ground or V+ in single-supply applications such as portable metering and handheld electronics.
For engineers reviewing the LMC6772AIMMX datasheet, LMC6772AIMMX pinout, LMC6772AIMMX application, or LMC6772AIMMX equivalent, key selection considerations include its 420ns propagation delay at 5V/100mV overdrive, ±30mA output short-circuit rating, −40°C to +85°C operating junction temperature, open-drain wired-OR capability, and VSSOP-8 package compatibility with space-constrained PCB layouts.
Technical Context
The LMC6772AIMMX integrates two independent comparators sharing only power rails, each featuring rail-to-rail input stage with 75dB typical CMRR and 20fA typical input bias current - enabling direct interface with high-impedance sensors without external biasing. Its open-drain NMOS output allows flexible pull-up to any voltage ≤15V, independent of V+, supporting logic-level translation across mixed-voltage domains.
Internal ESD protection (1.5kV HBM on outputs, 2kV on other pins), thermal shutdown avoidance via 40mA absolute max supply current limit, and guaranteed operation down to 2.7V make it suitable for robust, low-voltage industrial monitoring and safety-critical threshold detection where supply headroom is minimal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 10μA max per comparator - enables multi-year battery life in always-on sensor wake-up circuits. |
| Supply Voltage Range | 2.7V to 15V - supports single-cell Li-ion (3.0–4.2V), 3.3V/5V logic, and 12V industrial rails without level-shifting. |
| Input Common-Mode Range | Exceeds V− by 0.2V and V+ by 0.3V - permits direct detection of signals below ground or above V+ in power supply monitors. |
| Propagation Delay | 420ns (tPLH) at 5V/100mV overdrive - balances speed and power for RC timers and window comparators. |
| Output Type | Open-drain NMOS - enables wired-OR bus configurations and independent pull-up to 15V logic, decoupling output voltage from supply. |
| Input Offset Voltage | 5mV max (LMC6772AI grade) - ensures reliable threshold detection in precision battery voltage monitors. |
| Short-Circuit Output Current | ±30mA continuous - provides fault tolerance during transient load faults without latch-up. |
Pinout & Package
VSSOP-8 (DGK) package: 3.00mm × 3.00mm body, 0.65mm pitch, exposed pad not electrically connected. RoHS-compliant, NIPDAU lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Open-drain output of Comparator A - requires external pull-up; sinks up to 30mA. |
| 2 | IN− A | Inverting input of Comparator A - rail-to-rail capable, 20fA typical bias current. |
| 3 | IN+ A | Non-inverting input of Comparator A - same rail-to-rail and impedance specs as IN− A. |
| 4 | V− | Negative supply rail - common return for both comparators and internal bias circuitry. |
| 5 | IN+ B | Non-inverting input of Comparator B - electrically isolated from Comparator A inputs. |
| 6 | IN− B | Inverting input of Comparator B - identical specs to IN+ B; no crosstalk with Channel A. |
| 7 | OUT B | Open-drain output of Comparator B - independently configurable pull-up voltage. |
| 8 | V+ | Positive supply rail - powers both comparators; regulates internal reference and bias networks. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Enables accurate threshold detection at 0V and V+ in single-supply systems - eliminates need for input bias resistors or level shifters. |
| 10μA max supply current | Reduces quiescent power to <15μW per channel at 3V - critical for coin-cell-powered IoT endpoints. |
| Open-drain output architecture | Supports mixed-voltage logic interfacing (e.g., 3.3V comparator driving 5V microcontroller interrupt line) without level translators. |
| 2.7V minimum supply voltage | Guarantees functionality down to end-of-life battery voltage in lithium primary cells - extends usable battery capacity. |
| 75dB CMRR (typ) | Maintains <1mV offset shift over full input common-mode range - ensures stable trip points in noisy industrial environments. |
Applications
| Battery Voltage Monitor | Logic-Level Translator |
|---|---|
|
Use Scenario: Monitoring Li-ion cell voltage during discharge to trigger low-battery warning before cutoff. IC Role / Device Role / Timing Role: Dual comparator configured as window detector - one channel compares against upper threshold (4.2V), the other against lower threshold (3.0V). Use Value: Rail-to-rail input allows direct connection to cell anode/cathode; 10μA supply current minimizes loading on aging battery. |
Use Scenario: Interfacing a 3.3V microcontroller GPIO to a 5V peripheral interrupt line. IC Role / Device Role / Timing Role: Single comparator used as unidirectional level shifter - OUT B pulled to 5V, IN+ B driven by 3.3V signal. Use Value: Open-drain output eliminates need for external MOSFET or dedicated level-shifter IC; propagation delay <420ns preserves timing integrity. |
| RC Timer Circuit | Alarm Threshold Detector |
|
Use Scenario: Generating precise time delays in portable medical devices using resistor-capacitor charging curves. IC Role / Device Role / Timing Role: Comparator B configured as one-shot multivibrator - output pulse width set by R×C time constant. Use Value: Low input bias current (20fA typ) prevents capacitor leakage errors; 420ns delay ensures sub-microsecond timing resolution. |
Use Scenario: Detecting smoke sensor output voltage rise above alarm threshold in battery-powered fire alarms. IC Role / Device Role / Timing Role: Comparator A compares sensor output to precision reference; hysteresis added externally to reject EMI noise. Use Value: 20fA input current avoids loading high-impedance electrochemical sensor; rail-to-rail input captures full sensor swing from 0–100mV. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMC6762AIMMX | Push-pull output (not open-drain); otherwise identical specs including 10μA IS, 2.7–15V VS, rail-to-rail input. | Requires no external pull-up; unsuitable for wired-OR or mixed-voltage interfacing. | Select when driving CMOS inputs directly and board space prohibits pull-up resistors. |
| TLV3702IDGKR | Lower 800nA IS but narrower 2.7–5.5V VS range; 360ns tPLH; rail-to-rail input; open-drain output. | Optimized for ultra-low-power sub-5V systems only; not rated for 12V industrial rails. | Select when supply is strictly ≤5.5V and nanowatt operation outweighs voltage range flexibility. |
Compared with LMC6772AIMMX, LMC6762AIMMX eliminates external pull-up components but forfeits voltage-level translation capability, while TLV3702IDGKR achieves deeper micropower operation at the cost of 15V compatibility - making LMC6772AIMMX the optimal choice for wide-supply, mixed-voltage, battery-constrained designs requiring wired-OR or programmable pull-up voltage.
Availability
LMC6772AIMMX is available at Aetrix Electronics and suitable for battery-powered handheld electronics, portable metering systems, and low-voltage alarm and monitoring circuits requiring stable component supply across extended product lifecycles.
Supply support for LMC6772AIMMX 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LMC6772AIMMX belongs to TI's precision micropower comparator family, engineered specifically for energy-constrained applications where rail-to-rail input operation, open-drain flexibility, and sub-10μA quiescent current are mandatory design requirements.
FAQ
What is the maximum supply voltage rating for the LMC6772AIMMX?
The LMC6772AIMMX has an absolute maximum supply voltage (V+ – V−) of 16V, with recommended operating range from 2.7V to 15V. Exceeding 16V risks permanent damage. The device maintains specified performance across this full 2.7–15V range, including rail-to-rail input operation and 10μA max supply current - making LMC6772AIMMX suitable for both single-cell and 12V industrial systems.
Does the LMC6772AIMMX support true rail-to-rail input operation?
Yes, the LMC6772AIMMX supports rail-to-rail input common-mode voltage range that exceeds both supply rails: down to (V−) − 0.2V and up to (V+) + 0.3V at room temperature. This is verified across all operating voltages (2.7V, 5V, 15V) and enables direct sensing of signals at ground or above V+, such as in power supply UV/OV monitors - a confirmed specification for the LMC6772AIMMX grade.
Can the LMC6772AIMMX outputs be tied together for wired-OR functionality?
Yes, the LMC6772AIMMX features open-drain NMOS outputs on pins 1 (OUT A) and 7 (OUT B), explicitly designed for wired-OR configurations. When multiple outputs share a common pull-up resistor, the combined node goes low if any comparator asserts - a core function validated in TI's official application notes for LMC6772AIMMX, including universal logic level shifting and alarm bus architectures.
What is the guaranteed operating temperature range for the LMC6772AIMMX?
The LMC6772AIMMX is rated for −40°C to +85°C junction temperature, matching the LMC6772AI grade defined in TI's official datasheet SNOS749G. This range is distinct from the automotive-grade LMC6772Q (−40°C to +125°C) and is fully tested and ensured - confirming suitability for commercial and industrial portable equipment, including handheld meters and battery-powered instrumentation.
Is the LMC6772AIMMX pin-compatible with other packages in the LMC6772 family?
No - the LMC6772AIMMX uses the VSSOP-8 (DGK) package, while SOIC-8 (D) variants like LMC6772AIMX/NOPB.B have identical pin numbering but larger 3.91mm × 4.90mm footprint and 1.27mm pitch. Though electrically identical and functionally interchangeable, PCB layout changes are required to substitute between VSSOP and SOIC packages - LMC6772AIMMX is not a drop-in replacement for SOIC versions without redesign.
LMC6772AIMMX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 15V, ±1.35V ~ 7.5V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 0.04pA @ 5V
- Current - Input Bias (Max):
- 30mA
- Current - Output (Typ):
- 20µA
- Current - Quiescent (Max):
- 75dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 10µs
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-VSSOP
LMC6772AIMMX FAQ
1.How can I place an order for LMC6772AIMMX through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6772AIMMX 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 LMC6772AIMMX reliable?
The price and inventory of LMC6772AIMMX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6772AIMMX is usually 5 days.
3.What payment methods are accepted for LMC6772AIMMX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6772AIMMX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6772AIMMX?
LMC6772AIMMX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6772AIMMX 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 LMC6772AIMMX?
For technical support, including LMC6772AIMMX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6772AIMMX requirements.
6.How does Aetrix verify that LMC6772AIMMX is sourced from the original manufacturer or authorized distributors?
All LMC6772AIMMX 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 LMC6772AIMMX meets industry standards.
7.What is the process for return or replacement of LMC6772AIMMX?
All LMC6772AIMMX units undergo pre-shipment inspection (PSI). If there is an issue with LMC6772AIMMX, 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 LMC6772AIMMX part is unused and in its original packaging.
Return procedure for LMC6772AIMMX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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