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Texas Instruments LMC6772BIMX
- Part No.:
- LMC6772BIMX
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC6772BIMX.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,996
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Product details
Overview
LMC6772BIMX 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 10 μA max supply current per channel, operates from 2.7 V to 15 V, 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 LMC6772BIMX datasheet, LMC6772BIMX pinout, LMC6772BIMX application, or LMC6772BIMX equivalent, key selection criteria include its 420 ns propagation delay at 5 V/100 mV overdrive, 40 mA short-circuit output protection, open-drain flexibility for wired-OR logic and level-shifting, and guaranteed operation down to 2.7 V for 3 V digital system compatibility.
Technical Context
The LMC6772BIMX integrates two independent comparators sharing only power supply pins, each featuring rail-to-rail input stages with 20 fA typical input bias current and 75 dB common-mode rejection. Its open-drain NMOS output stage allows external pull-up to any voltage ≤15 V, decoupling output logic level from supply voltage - critical for interfacing between disparate voltage domains.
Internal power-on reset and ESD clamps (1.5 kV HBM on outputs) support robust operation in noisy portable environments. The device is specified for −40°C to +85°C junction temperature, with absolute maximum supply voltage of 16 V and differential input voltage tolerance of (V+) + 0.3 V to (V−) − 0.3 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | Max 10 μA per channel at 2.7 V - enables multi-year battery life in always-on monitoring circuits. |
| Supply Voltage Range | 2.7 V to 15 V - supports single-cell Li-ion (3.0–4.2 V), 5 V logic, and 12 V industrial rails without level-shifting. |
| Input Common-Mode Range | Extends 200 mV beyond both rails (e.g., −0.2 V to 5.2 V at VS = 5 V) - permits direct interface to sensors and signals near ground or V+. |
| Propagation Delay | 420 ns (low-to-high) at 5 V/100 mV overdrive - sufficient for RC timers, window comparators, and multivibrator clock generation up to ~1 MHz. |
| Output Type | Open-drain NMOS - enables wired-OR logic, flexible pull-up voltage selection (up to 15 V), and bidirectional level translation. |
| Short-Circuit Protection | 40 mA continuous sink current limit - protects against accidental output shorts while maintaining reliability under transient faults. |
| Input Offset Voltage | Max 8 mV (LMC6772BI grade) - ensures accurate threshold detection in precision monitoring applications like battery voltage guards. |
Pinout & Package
LMC6772BIMX is packaged in an 8-pin SOIC (D) package measuring 3.91 mm × 4.90 mm, with standard JEDEC MS-012AC outline and RoHS-compliant NiPdAu lead finish. Pin 1 is located at the top-left corner adjacent to the notch or dot marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Open-drain output of Comparator A - requires external pull-up; sinks current when active low. |
| 2 | IN− A | Inverting input of Comparator A - high-impedance node (20 fA typical bias) for reference or feedback connection. |
| 3 | IN+ A | Non-inverting input of Comparator A - accepts rail-to-rail signals; used for signal sensing or threshold comparison. |
| 4 | V− | Negative supply rail (GND in single-supply use) - shared by both comparators and internal bias circuitry. |
| 5 | IN+ B | Non-inverting input of Comparator B - independent of Channel A; enables dual-threshold or hysteresis configurations. |
| 6 | IN− B | Inverting input of Comparator B - supports differential or single-ended inputs; matched performance to Channel A. |
| 7 | OUT B | Open-drain output of Comparator B - electrically isolated from OUT A; supports independent load or pull-up. |
| 8 | V+ | Positive supply rail - powers both comparators; regulates internal bias and output stage operation. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Enables direct sensing of signals from −0.2 V to V+ + 0.2 V - eliminates need for input biasing in single-supply sensor interfaces. |
| Ultra-low quiescent current | 10 μA max per channel at 2.7 V - reduces standby power in battery-backed alarm circuits and portable data loggers. |
| Open-drain output architecture | Allows pull-up to any voltage ≤15 V - supports logic-level translation between 1.8 V, 3.3 V, and 5 V domains without additional components. |
| Wide supply voltage range | Operates from 2.7 V to 15 V - accommodates aging batteries, unregulated supplies, and mixed-voltage system designs. |
| ESD-protected outputs | 1.5 kV HBM rating on OUT A and OUT B - improves field reliability in handheld devices subject to user handling discharge. |
Applications
| Battery Voltage Monitor | Logic Level Shifter |
|---|---|
|
Use Scenario: Monitoring Li-ion cell voltage during charging/discharging to trigger low-battery alerts or cutoff. IC Role / Device Role / Timing Role: Dual comparator configured as window detector - one channel compares against upper threshold (4.2 V), the other against lower threshold (3.0 V). Use Value: Rail-to-rail input allows direct connection to cell; 10 μA supply current extends battery runtime; open-drain outputs interface cleanly with microcontroller GPIOs. |
Use Scenario: Translating 1.8 V I²C signals from a sensor to a 3.3 V host MCU in a wearable device. IC Role / Device Role / Timing Role: Comparator used as unidirectional level shifter - IN+ driven by 1.8 V signal, OUT pulled to 3.3 V via external resistor. Use Value: Eliminates dedicated level-shifter IC; 420 ns propagation delay supports >100 kHz I²C speeds; no supply voltage matching required between domains. |
| RC Timer Circuit | Alarm Threshold Detector |
|
Use Scenario: Generating precise time delays in portable medical devices using resistor-capacitor timing networks. IC Role / Device Role / Timing Role: One comparator configured as a one-shot multivibrator - triggered by external pulse, output pulse width set by R×C time constant. Use Value: Low supply current minimizes timing drift due to supply variation; rail-to-rail input ensures reliable triggering across full capacitor swing. |
Use Scenario: Detecting smoke sensor output voltage rise above threshold in battery-powered fire alarms. IC Role / Device Role / Timing Role: Single comparator comparing sensor output to stable reference - output drives buzzer or RF alert transmitter via open-drain output. Use Value: 20 fA input bias prevents loading of high-impedance sensor elements; 40 mA short-circuit protection safeguards buzzer driver stage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMC6762BIMX | Push-pull output (not open-drain); identical supply current, input range, and speed specs. | Requires matched supply for output logic level; unsuitable for wired-OR or level-shifting. | Select LMC6762BIMX only when push-pull drive into CMOS loads is required and external pull-ups are undesirable. |
| TLV3702IDR | Lower supply current (1.8 μA typ), but narrower input common-mode range (to V+ − 0.2 V); 360 ns propagation delay. | Not suitable for signals exceeding V+; better for ultra-low-power wake-up circuits where rail-to-rail input is unnecessary. | Choose TLV3702IDR when sub-2 μA quiescent current is mandatory and input signals remain within V− to V+ − 0.2 V. |
Compared with LMC6772BIMX, LMC6762BIMX trades open-drain flexibility for push-pull simplicity, while TLV3702IDR achieves lower power at the cost of input range - making LMC6772BIMX the optimal choice for rail-to-rail sensing with level-shifting capability in portable systems.
Availability
LMC6772BIMX 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 production lifecycles.
Supply support for LMC6772BIMX 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 LMC6772BIMX belongs to TI's precision micropower comparator product line, engineered specifically for energy-constrained applications where rail-to-rail input operation, open-drain flexibility, and guaranteed low-voltage functionality are essential design requirements.
FAQ
What is the maximum supply voltage rating for the LMC6772BIMX?
The LMC6772BIMX has an absolute maximum supply voltage (V+ − V−) of 16 V. Operation beyond this limit risks permanent damage. For reliable long-term use, the recommended operating range is 2.7 V to 15 V, as specified in the electrical characteristics tables. Exceeding 15 V may degrade parametric performance or accelerate wear-out mechanisms.
Does the LMC6772BIMX support rail-to-rail input voltage beyond the supply rails?
Yes, the LMC6772BIMX supports an input common-mode voltage range that extends 200 mV beyond both supply rails - for example, −0.2 V to 5.2 V at VS = 5 V. This is confirmed in Section 5.4 of the datasheet and enables direct interface to signals that exceed V− or V+, such as sensor outputs or AC-coupled waveforms, without external clamping or biasing.
Can the LMC6772BIMX outputs be connected together for wired-OR logic?
Yes, the LMC6772BIMX features open-drain outputs on pins 1 (OUT A) and 7 (OUT B), which are 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 key feature used in alarm consolidation, priority interrupt generation, and fault-bus signaling in portable systems.
What is the guaranteed propagation delay of the LMC6772BIMX at 2.7 V supply?
At VS = 2.7 V and 100 mV input overdrive, the LMC6772BIMX guarantees tPLH ≤ 420 ns and tPHL ≤ 450 ns, as documented in Section 5.5 of the datasheet. These values are ensured across the full −40°C to +85°C operating temperature range and apply to both channels independently.
Is the LMC6772BIMX pin-compatible with the automotive-grade LMC6772QMM/NOPB?
No - the LMC6772BIMX uses an 8-pin SOIC (D) package, while the LMC6772QMM/NOPB uses an 8-pin VSSOP (DGK) package with different footprint dimensions (3.00 mm × 3.00 mm vs. 3.91 mm × 4.90 mm) and pin pitch. Though functionally identical and sharing the same pin numbering, they are not mechanically interchangeable without PCB redesign.
LMC6772BIMX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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
- :
- 15mV @ 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-SOIC
LMC6772BIMX FAQ
1.How can I place an order for LMC6772BIMX through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6772BIMX 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 LMC6772BIMX reliable?
The price and inventory of LMC6772BIMX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6772BIMX is usually 5 days.
3.What payment methods are accepted for LMC6772BIMX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6772BIMX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6772BIMX?
LMC6772BIMX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6772BIMX 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 LMC6772BIMX?
For technical support, including LMC6772BIMX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6772BIMX requirements.
6.How does Aetrix verify that LMC6772BIMX is sourced from the original manufacturer or authorized distributors?
All LMC6772BIMX 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 LMC6772BIMX meets industry standards.
7.What is the process for return or replacement of LMC6772BIMX?
All LMC6772BIMX units undergo pre-shipment inspection (PSI). If there is an issue with LMC6772BIMX, 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 LMC6772BIMX part is unused and in its original packaging.
Return procedure for LMC6772BIMX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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