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Texas Instruments LMC7221AIM5/NOPB
- Part No.:
- LMC7221AIM5/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMC7221AIM5/NOPB.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:250
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Product details
Overview
LMC7221AIM5/NOPB from Texas Instruments is a micropower CMOS comparator in 5-pin SOT-23 package, featuring rail-to-rail input range beyond V− and V+, open-drain output, 7 μA typical supply current at 5V, and 4 μs propagation delay (tPHL/tPLH) at 2.7V with 100 mV overdrive-used for battery voltage monitoring and low-power sensor interface in space-constrained portable electronics.
For engineers reviewing the LMC7221AIM5/NOPB datasheet, LMC7221AIM5/NOPB pinout, LMC7221AIM5/NOPB application, or LMC7221AIM5/NOPB equivalent, key selection criteria include its 5 mV max input offset voltage (AI grade), −40°C to +85°C operating range, open-drain output compatibility with mixed-voltage logic, and validated performance at 2.7V/5V/15V supplies.
Technical Context
The LMC7221AIM5/NOPB implements a CMOS input stage enabling rail-to-rail common-mode input range extending 0.2 V beyond both supply rails, with input bias current as low as 0.04 pA and input offset voltage drift of 1.0 μV/°C. Its open-drain output stage supports pull-up to voltages up to 15 V, independent of the 2.7–15 V supply range.
This comparator operates without phase inversion even when inputs exceed supply rails-verified at 2.7 V-and delivers stable response across temperature due to guaranteed specs at −40°C to +85°C and PSRR of 80 dB (5–10 V). It is not a push-pull device; no sourcing capability exists at the output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 15 V - supports single-supply operation across battery discharge curves and mixed-voltage system interfaces. |
| Input Offset Voltage (max) | 5 mV - ensures reliable threshold detection with ≤5 mV error margin in precision level-shifting or reference-comparison circuits. |
| Supply Current (typ) | 7 μA at 5 V - enables multi-year operation on coin-cell batteries in always-on monitoring applications. |
| Propagation Delay | 4 μs at 2.7 V, 100 mV overdrive - sufficient for slow-varying signals like battery voltage ramps or thermal thresholds. |
| Input Common-Mode Range | V− −0.2 V to V+ +0.3 V - allows direct sensing of signals near or slightly beyond supply rails without external level-shifting. |
| Output Type | Open-drain - enables flexible logic-level translation via external pull-up to 1.8 V, 3.3 V, or 15 V, decoupling output voltage from supply. |
| Operating Temperature | −40°C to +85°C - qualified for industrial and extended-temperature portable equipment environments. |
Pinout & Package
LMC7221AIM5/NOPB uses the 5-pin SOT-23 package (DBV0005A), measuring 3.05 mm × 2.75 mm × 1.45 mm max height, with exposed pad not electrically connected. Pin 1 is marked by an index area; device orientation follows JEDEC MO-178 standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN+) | Non-inverting input | High-impedance node (0.04 pA bias) accepting signals from −0.2 V to V+ +0.3 V - suitable for direct sensor or divider output connection. |
| 2 (GND) | Ground reference | Return path for supply and output sink current; must be low-impedance to maintain noise immunity and accurate common-mode rejection. |
| 3 (IN−) | Inverting input | Matches IN+ in voltage range and impedance; differential pair input enables precise threshold comparison against reference or feedback signal. |
| 4 (V+) | Positive supply | Accepts 2.7–15 V DC; powers internal circuitry and sets upper rail for input common-mode and output pull-down compliance. |
| 5 (OUT) | Open-drain output | Sinks up to 5 mA (ensured) with VOL ≤ 0.4 V; requires external pull-up resistor to define logic HIGH voltage and current-sinking load capability. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input beyond supply rails | Supports input signals down to V− −0.2 V and up to V+ +0.3 V - eliminates need for external clamping or level-shifting in power-supply monitoring. |
| Ultra-low input bias current | 0.04 pA typical - preserves accuracy in high-impedance timing networks (e.g., RC oscillators) and direct piezoelectric/sensor interfacing. |
| Micropower operation | 7 μA supply current at 5 V - reduces quiescent power to <35 μW, critical for energy harvesting and long-life battery systems. |
| Guaranteed operation at 2.7 V | Full AC/DC specs validated at 2.7 V - ensures reliable function as lithium battery discharges from 4.2 V to cutoff (~2.8 V). |
| ESD robustness | 2 kV HBM rating - provides baseline protection during PCB handling and assembly without requiring additional input clamping diodes. |
Applications
| Battery Voltage Monitoring | Low-Power Sensor Interface |
|---|---|
Use Scenario: Detecting end-of-discharge in Li-ion or alkaline battery packs used in handheld medical devices. IC Role / Device Role / Timing Role: Comparator compares battery voltage against a precision reference (e.g., 2.8 V) to trigger shutdown or alert. Use Value: Rail-to-rail input accepts full battery swing (4.2 V → 2.7 V); 7 μA current minimizes self-discharge impact on remaining capacity. |
Use Scenario: Converting thermistor or photodiode output into digital ON/OFF signal for microcontroller wake-up. IC Role / Device Role / Timing Role: Threshold detector converting analog sensor voltage into clean logic edge without amplification. Use Value: 0.04 pA input bias avoids loading high-Z sensors; open-drain output interfaces directly to 1.8 V MCU GPIO with 10 kΩ pull-up. |
| Mixed-Voltage Logic Translation | LED Indicator Driver |
Use Scenario: Level-shifting between 5 V analog front-end and 3.3 V digital controller in IoT edge nodes. IC Role / Device Role / Timing Role: Open-drain output pulled to 3.3 V generates compatible logic HIGH while powered from 5 V supply. Use Value: Eliminates dedicated level-shifter IC; output sinks 5 mA ensures fast rise/fall with 10 kΩ pull-up to 3.3 V. |
Use Scenario: Driving status LEDs in ultra-thin notebooks where board space and height are constrained. IC Role / Device Role / Timing Role: Output sinks LED current (≤5 mA) directly; compact SOT-23 footprint fits tight layouts. Use Value: 1.43 mm max height enables use in PCMCIA Type III cards; 7 μA quiescent current avoids draining standby power. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMC7221BIM5/NOPB | 15 mV max input offset voltage (vs. 5 mV for LMC7221AIM5/NOPB); otherwise identical specs and pinout. | Less precise threshold detection; acceptable where ±15 mV offset is tolerable (e.g., coarse battery OK/LOW indication). | Select LMC7221BIM5/NOPB only when cost sensitivity outweighs offset-critical performance requirements. |
| TLV3701DBVR | Push-pull output (no external pull-up needed); 1.8–16 V supply; 350 nA supply current; 350 ns propagation delay. | Not drop-in: output polarity and drive strength differ; unsuitable where open-drain wired-OR or mixed-voltage pull-up is required. | Choose TLV3701DBVR only when sourcing capability and speed are prioritized over micropower and open-drain flexibility. |
Compared with LMC7221BIM5/NOPB, the LMC7221AIM5/NOPB offers tighter offset control for precision sensing; compared with TLV3701DBVR, it trades speed and sourcing for ultra-low power and open-drain interoperability in multi-rail systems.
Availability
LMC7221AIM5/NOPB is available at Aetrix Electronics and suitable for battery-powered medical wearables, industrial sensor nodes, and portable instrumentation requiring stable component supply, RoHS-compliant packaging, and long-term production continuity.
Supply support for LMC7221AIM5/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 LMC7221AIM5/NOPB belongs to TI's Tiny Comparator family, engineered specifically for space- and power-constrained applications where rail-to-rail input, open-drain flexibility, and sub-10 μA quiescent current are essential.
FAQ
What is the maximum supply voltage for LMC7221AIM5/NOPB?
The absolute maximum supply voltage (V+ – V−) for LMC7221AIM5/NOPB is 16 V, with recommended operating range from 2.7 V to 15 V. Operation above 15 V risks exceeding absolute maximum ratings and may compromise reliability or parametric guarantees specified in the datasheet.
Does LMC7221AIM5/NOPB support rail-to-rail input?
Yes, LMC7221AIM5/NOPB supports true rail-to-rail input with common-mode range extending to V− −0.2 V and V+ +0.3 V at 25°C - verified across −40°C to +85°C. This enables direct interface to signals near or slightly beyond supply rails without external biasing.
Can LMC7221AIM5/NOPB drive an LED directly?
Yes, LMC7221AIM5/NOPB can sink up to 5 mA (ensured) with VOL ≤ 0.4 V at 5 V supply, making it suitable for driving low-current indicator LEDs. A series current-limiting resistor must be used; typical configuration employs 10 kΩ pull-up to VCC and LED anode tied to VCC.
What is the input offset voltage specification for LMC7221AIM5/NOPB?
The LMC7221AIM5/NOPB has a maximum input offset voltage of 5 mV at 25°C, with typical value of 3 mV. This AI-grade device is characterized across temperature, with TCVOS of 1.0 μV/°C - ensuring stable threshold accuracy in varying ambient conditions.
Is LMC7221AIM5/NOPB pin-compatible with other SOT-23 comparators?
LMC7221AIM5/NOPB uses standard 5-pin SOT-23 (DBV) pinout (IN+, GND, IN−, V+, OUT), matching industry layout conventions. However, functional compatibility depends on output type: only other open-drain comparators (e.g., TLV3701 with modified output) share electrical behavior - push-pull devices are not functionally interchangeable.
LMC7221AIM5/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 1
- 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):
- 14µA
- 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
- :
- SOT-23-5
LMC7221AIM5/NOPB FAQ
1.How can I place an order for LMC7221AIM5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC7221AIM5/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 LMC7221AIM5/NOPB reliable?
The price and inventory of LMC7221AIM5/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC7221AIM5/NOPB is usually 5 days.
3.What payment methods are accepted for LMC7221AIM5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC7221AIM5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC7221AIM5/NOPB?
LMC7221AIM5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC7221AIM5/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 LMC7221AIM5/NOPB?
For technical support, including LMC7221AIM5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC7221AIM5/NOPB requirements.
6.How does Aetrix verify that LMC7221AIM5/NOPB is sourced from the original manufacturer or authorized distributors?
All LMC7221AIM5/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 LMC7221AIM5/NOPB meets industry standards.
7.What is the process for return or replacement of LMC7221AIM5/NOPB?
All LMC7221AIM5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMC7221AIM5/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 LMC7221AIM5/NOPB part is unused and in its original packaging.
Return procedure for LMC7221AIM5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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