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Texas Instruments LMC6772BIM
- Part No.:
- LMC6772BIM
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMC6772BIM.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,775
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Product details
Overview
LMC6772BIM 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, features rail-to-rail input common-mode range exceeding both supply rails, and achieves 420ns propagation delay at 5V with 100mV overdrive - enabling precision threshold detection in portable metering and handheld electronics.
For engineers reviewing the LMC6772BIM datasheet, LMC6772BIM pinout, LMC6772BIM application, or LMC6772BIM equivalent, key selection criteria include its micropower consumption, single-supply compatibility down to 2.7V, open-drain flexibility for wired-OR logic and level shifting, and guaranteed −40°C to +85°C operation in SOIC-8 packaging.
Technical Context
The LMC6772BIM integrates two independent high-impedance CMOS comparators sharing a common supply. Its input stage supports common-mode voltages from −0.3V to V+ + 0.3V, enabling direct sensing of signals near ground or rail in single-supply configurations. The open-drain NMOS output allows external pull-up to any voltage ≤15V, decoupling output logic level from supply voltage.
Each comparator exhibits 0.02pA typical input bias current, 75dB minimum CMRR, and 80dB PSRR - ensuring stable operation under supply ripple and common-mode noise. Propagation delay remains stable across temperature (−40°C to +85°C) and supply (2.7V–15V), with tPLH = 420ns (100mV overdrive, VS = 5V) and short-circuit protection rated at 40mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 20μA max per comparator at 25°C - enables multi-year battery life in always-on monitoring circuits. |
| Supply Voltage Range | 2.7V to 15V - supports direct integration into 3V microcontroller systems and 12V industrial sensors without regulation. |
| Input Common-Mode Range | Exceeds rails by ±0.3V - permits accurate zero-crossing detection and rail-sensing without external level-shifting circuitry. |
| Propagation Delay | 420ns (tPLH, VS = 5V, 100mV overdrive) - provides deterministic timing for RC timers and pulse-width measurement. |
| Output Type | Open-drain NMOS - enables wired-OR logic, I²C-compatible bus interfacing, and flexible pull-up to 15V independent of V+. |
| Input Offset Voltage | 8mV max (LMC6772BI grade) - ensures reliable threshold discrimination in low-amplitude sensor interfaces. |
| ESD Tolerance | 1.5kV HBM on outputs, 2kV on inputs - meets basic handling requirements for assembly in non-classified environments. |
Pinout & Package
LMC6772BIM is housed in an 8-pin SOIC (D) package measuring 3.91mm × 4.90mm, with standard JEDEC MS-012AC footprint and RoHS-compliant NiPdAu lead finish. Thermal resistance θJA is 136°C/W when soldered to a 2-layer PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Open-drain output of Comparator A - requires external pull-up; sinks up to 40mA short-circuit current. |
| 2 | IN− A | Inverting input of Comparator A - high-impedance CMOS node (0.02pA bias current). |
| 3 | IN+ A | Non-inverting input of Comparator A - supports rail-to-rail common-mode voltage range. |
| 4 | V− | Negative supply terminal - also serves as reference for all inputs and outputs; tied to GND in single-supply use. |
| 5 | IN+ B | Non-inverting input of Comparator B - electrically isolated from Channel A; identical rail-to-rail performance. |
| 6 | IN− B | Inverting input of Comparator B - shares same input structure and bias current spec as Pin 2. |
| 7 | OUT B | Open-drain output of Comparator B - independently controllable; supports wired-OR with OUT A or other devices. |
| 8 | V+ | Positive supply terminal - accepts 2.7V to 15V; powers both comparators and internal bias circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input range | Operates with inputs from −0.3V to V+ + 0.3V - eliminates need for input clamping diodes or level translators in single-supply designs. |
| Ultra-low quiescent current | 20μA max per channel at 25°C - reduces system standby power by >90% versus standard comparators, critical for coin-cell applications. |
| Open-drain output architecture | Allows output pull-up to any voltage ≤15V - enables seamless interface between 3.3V logic and 5V/12V subsystems without level-shifters. |
| Wide supply voltage support | Functional across 2.7V–15V - accommodates unregulated battery stacks (e.g., 2×Li-ion) and legacy 12V industrial rails in one BOM item. |
| Guaranteed operation at −40°C to +85°C | Specified performance over full industrial temperature range - suitable for automotive cabin modules and outdoor metering enclosures. |
Applications
| Battery-Powered Threshold Detection | Universal Logic Level Shifting |
|---|---|
|
Use Scenario: Monitoring battery voltage in handheld medical devices to trigger low-battery alerts before shutdown. IC Role / Device Role / Timing Role: Dual comparator configured as window detector - one channel monitors upper threshold (e.g., 3.3V), the other lower (e.g., 2.8V). Use Value: 10μA total supply current extends usable battery life by months; rail-to-rail inputs directly sense cell voltage without resistive dividers. |
Use Scenario: Interfacing a 3.3V microcontroller GPIO to a 5V sensor bus requiring bidirectional signal translation. IC Role / Device Role / Timing Role: Single comparator used as unidirectional level shifter - input driven by 3.3V logic, output pulled to 5V via external resistor. Use Value: Open-drain output eliminates shoot-through risk; 420ns propagation delay preserves timing integrity in 1MHz I²C-style protocols. |
| RC-Based Precision Timers | Alarm & Monitoring Circuits |
|
Use Scenario: Generating precise time delays in portable test equipment using resistor-capacitor networks. IC Role / Device Role / Timing Role: Comparator configured as monostable multivibrator - triggers on input edge and produces fixed-width output pulse. Use Value: Stable 420ns propagation delay at 2.7V ensures consistent timing accuracy across battery discharge curve; low IS minimizes capacitor leakage error. |
Use Scenario: Detecting overtemperature conditions in industrial motor drives using thermistor-based voltage divider. IC Role / Device Role / Timing Role: Comparator compares thermistor voltage against precision reference - asserts fault flag when threshold exceeded. Use Value: 0.02pA input bias current prevents loading of high-impedance thermistor networks; −40°C to +85°C rating ensures reliability in harsh thermal environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMC6772AIMX/NOPB | Same SOIC-8 package and pinout; AI grade offers tighter 5mV max input offset voltage vs. BI's 8mV. | Better DC accuracy for precision window detection; otherwise identical AC performance and power specs. | Select LMC6772AIMX/NOPB when <5mV offset is required; LMC6772BIM remains optimal for cost-sensitive, general-purpose thresholding. |
| TLV3702IDR | Lower 1.8V–16V supply range; 850nA typical supply current (vs. 10μA); push-pull output (no external pull-up needed). | Superior for ultra-low-power wake-up circuits but lacks rail-to-rail input beyond rails; not drop-in compatible due to different output architecture. | Choose TLV3702IDR only if sub-μA quiescent current is mandatory and rail-to-rail input beyond supplies is unnecessary. |
Compared with LMC6772AIMX/NOPB, the LMC6772BIM trades 3mV higher input offset for lower cost and broader availability; versus TLV3702IDR, it sacrifices nanowatt-level sleep current to deliver true rail-exceeding input range and open-drain flexibility essential for wired-OR alarm buses.
Availability
LMC6772BIM is available at Aetrix Electronics and suitable for battery-powered handheld electronics, portable metering systems, and industrial monitoring circuits requiring stable component supply across extended product lifecycles.
Supply support for LMC6772BIM 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 LMC6772BIM belongs to TI's micropower comparator family, engineered specifically for energy-constrained applications where rail-to-rail input capability, open-drain flexibility, and guaranteed industrial temperature operation are critical.
FAQ
What is the maximum supply voltage for the LMC6772BIM?
The LMC6772BIM supports a maximum supply voltage of 15V between V+ and V− terminals. Absolute maximum ratings specify 16V, but continuous operation above 15V risks reliability degradation. The device is fully characterized from 2.7V to 15V, with electrical parameters guaranteed across this range - making it suitable for both 3V portable systems and 12V industrial rails without derating.
Does the LMC6772BIM support rail-to-rail input voltage beyond the supply rails?
Yes, the LMC6772BIM explicitly supports input common-mode voltages from −0.3V to V+ + 0.3V, verified across 2.7V, 5V, and 15V supply conditions. This rail-exceeding capability enables direct connection to sensors or signals that swing below ground or above V+, eliminating external clamping diodes or level-shifting circuitry in applications like zero-crossing detection and power-supply monitoring.
Can the LMC6772BIM outputs be wired together for OR logic?
Yes, the LMC6772BIM features open-drain NMOS outputs on Pins 1 and 7, allowing direct wired-OR connection without additional components. When multiple outputs share a single pull-up resistor, the combined node goes low if any comparator asserts - ideal for alarm bus architectures where multiple fault conditions must trigger a single system interrupt signal.
What is the guaranteed operating temperature range for the LMC6772BIM?
The LMC6772BIM is specified for operation from −40°C to +85°C, matching the LMC6772BI grade's industrial temperature rating. This range is fully tested and guaranteed per datasheet Section 5.2 Operating Ratings, ensuring reliable performance in automotive cabin modules, outdoor utility meters, and industrial control panels without thermal derating.
How does the LMC6772BIM differ from the LMC6772Q automotive variant?
The LMC6772BIM is an industrial-grade part rated for −40°C to +85°C, while the LMC6772Q is AEC-Q200 qualified and rated for −40°C to +125°C with enhanced process controls. Both share identical electrical specifications and pinout, but the LMC6772Q undergoes additional automotive qualification testing - making it mandatory for under-hood applications, whereas the LMC6772BIM suffices for cabin or non-safety-critical industrial use.
LMC6772BIM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- 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
LMC6772BIM FAQ
1.How can I place an order for LMC6772BIM through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC6772BIM 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 LMC6772BIM reliable?
The price and inventory of LMC6772BIM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC6772BIM is usually 5 days.
3.What payment methods are accepted for LMC6772BIM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC6772BIM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC6772BIM?
LMC6772BIM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC6772BIM 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 LMC6772BIM?
For technical support, including LMC6772BIM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC6772BIM requirements.
6.How does Aetrix verify that LMC6772BIM is sourced from the original manufacturer or authorized distributors?
All LMC6772BIM 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 LMC6772BIM meets industry standards.
7.What is the process for return or replacement of LMC6772BIM?
All LMC6772BIM units undergo pre-shipment inspection (PSI). If there is an issue with LMC6772BIM, 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 LMC6772BIM part is unused and in its original packaging.
Return procedure for LMC6772BIM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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