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Texas Instruments LMC7221BIM5X/NOPB
- Part No.:
- LMC7221BIM5X/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMC7221BIM5X/NOPB.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:9,847
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Product details
Overview
LMC7221BIM5X/NOPB from Texas Instruments is a micropower CMOS single comparator in 5-pin SOT-23 package, featuring rail-to-rail input, open-drain output, 7 μA typical supply current at 5V, 4 μs propagation delay (tPHL/tPLH) at 5V with 100 mV overdrive, and guaranteed operation from 2.7V to 15V supply. It serves as a precision voltage threshold detector in battery-powered mixed-voltage systems.
For engineers reviewing the LMC7221BIM5X/NOPB datasheet, LMC7221BIM5X/NOPB pinout, LMC7221BIM5X/NOPB application, or LMC7221BIM5X/NOPB equivalent, key selection criteria include its 5 mV max input offset voltage (BI grade), −40°C to +85°C operating range, 0.04 pA input bias current, open-drain output compatibility with 3.3V/5V/15V pull-up rails, and suitability for direct sensor interface and low-power voltage monitoring.
Technical Context
The LMC7221BIM5X/NOPB implements a CMOS input stage with rail-to-rail common-mode range extending 0.3 V beyond both supply rails, enabling direct sensing of signals near V− or V+. Its open-drain output stage supports level-shifting across voltage domains without requiring additional logic buffers.
Designed for ultra-low-power operation, it achieves 7 μA typical supply current while maintaining 100 dB voltage gain and 75–82 dB PSRR across 2.7V–15V supplies. Input offset voltage is specified at 5 mV (max) for the BI grade, with 1.0 μV/°C temperature drift and 3.3 μV/month long-term drift.
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 detection of small differential signals without trimming in cost-sensitive applications. |
| Supply Current (typ) | 7 μA at 5 V - extends battery life in portable devices such as PDAs and PCMCIA cards by minimizing quiescent power. |
| Propagation Delay (tPHL/tPLH) | 4 μs at 5 V, 100 mV overdrive - enables fast response in alarm circuits and zero-crossing detection without high-speed overhead. |
| Input Bias Current (typ) | 0.04 pA - permits use with high-impedance sensors and megaohm-scale timing resistors without loading error. |
| Common-Mode Input Range | V− − 0.3 V to V+ + 0.3 V - allows direct monitoring of supply rails or current-sense voltages without external level-shifting. |
| Output Type | Open-drain - enables flexible pull-up to any voltage ≤15 V, supporting interoperability between 3.3 V logic and 5 V/15 V subsystems. |
Pinout & Package
LMC7221BIM5X/NOPB uses the 5-pin SOT-23 package (DBV), measuring 3.05 mm × 3.00 mm × 1.43 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 | Accepts analog signals up to V+ + 0.3 V; high-impedance node for direct sensor connection. |
| 2 (IN−) | Inverting input | Differential counterpart to IN+; supports rail-to-rail common-mode range and zero-crossing detection. |
| 3 (V−) | Negative supply / ground | Reference for single-supply operation; tied to system ground in most applications. |
| 4 (OUT) | Open-drain output | Sinks current only; requires external pull-up resistor to define logic-high voltage level. |
| 5 (V+) | Positive supply | Accepts 2.7 V–15 V; powers internal circuitry and sets upper rail for input common-mode range. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Enables direct sensing of signals within 0.3 V of either supply rail-eliminates need for input voltage dividers in supply monitoring. |
| Open-drain output architecture | Permits level translation across voltage domains (e.g., 5 V comparator driving 3.3 V microcontroller inputs) using a single external pull-up. |
| Ultra-low input bias current | 0.04 pA typical allows use with >1 MΩ source impedances-critical for high-precision sensor interfacing and RC timing circuits. |
| Micropower operation | 7 μA supply current at 5 V reduces system-level power budget-ideal for always-on battery-backed security alarms and wearables. |
| Guaranteed performance at 2.7 V | Ensures full functionality down to end-of-battery life in 3 V systems-no brown-out reset required during voltage sag. |
Applications
| Battery Voltage Monitor | Mixed-Voltage Logic Interface |
|---|---|
|
Use Scenario: Monitoring Li-ion cell voltage during discharge to trigger low-battery warning before cutoff. IC Role / Device Role / Timing Role: Threshold comparator detecting when cell voltage drops below 3.0 V reference. Use Value: Rail-to-rail input accepts full 0–4.2 V range; open-drain output pulls down microcontroller interrupt line referenced to 3.3 V supply. |
Use Scenario: Interfacing a 5 V analog sensor output to a 3.3 V microcontroller ADC reference or enable pin. IC Role / Device Role / Timing Role: Level-shifting comparator converting analog threshold crossing into clean 3.3 V logic signal. Use Value: Open-drain output pulled to 3.3 V eliminates level-shifter IC; 0.04 pA input bias avoids sensor loading error. |
| PCMCIA Card Power Sequencing | Low-Power Security Sensor |
|
Use Scenario: Enabling card power rails only after host voltage stabilizes, per PCMCIA Type III mechanical spec. IC Role / Device Role / Timing Role: Precision window comparator verifying VCC ≥ 4.75 V before asserting enable signal. Use Value: 5 mV max offset ensures tight trip point tolerance; 1.43 mm height fits within 5.5 mm card thickness envelope. |
Use Scenario: Detecting tamper switch closure or motion sensor output in battery-powered alarm panels. IC Role / Device Role / Timing Role: Ultra-low-power wake-up comparator holding microcontroller in sleep until threshold exceeded. Use Value: 7 μA supply current minimizes standby drain; rail-to-rail input accommodates sensor outputs near ground or rail. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMC7221AIM5X/NOPB | AI grade: 15 mV max input offset voltage vs. 5 mV for BI grade; otherwise identical specs and pinout. | Less precise threshold detection; suitable where ±15 mV trip tolerance is acceptable. | Select LMC7221AIM5X/NOPB for cost-sensitive designs where tighter offset is unnecessary. |
| TLV3701IDBVR | Higher supply current (1.6 μA typ), faster response (3.5 μs), but only 2.7–16 V supply range and no guaranteed 2.7 V operation. | Not validated for sub-3 V battery end-of-life operation; lacks same input bias current (1 pA vs. 0.04 pA). | Choose TLV3701IDBVR only if speed outweighs micropower and ultra-low-input-current requirements. |
Compared with LMC7221BIM5X/NOPB, the AI-grade variant trades offset accuracy for lower cost while retaining identical packaging and power profile; TLV3701IDBVR offers speed at the expense of input bias current and guaranteed low-voltage operation-making LMC7221BIM5X/NOPB optimal for precision, ultra-low-power, rail-to-rail sensing in space-constrained battery systems.
Availability
LMC7221BIM5X/NOPB is available at Aetrix Electronics and suitable for battery-powered notebooks, PCMCIA peripherals, and alarm/security circuits requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMC7221BIM5X/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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LMC7221BIM5X/NOPB belongs to TI's Tiny Comparator family, engineered specifically for space-constrained, battery-operated applications demanding rail-to-rail input, open-drain flexibility, and sub-10 μA quiescent current.
FAQ
What is the maximum supply voltage rating for LMC7221BIM5X/NOPB?
The absolute maximum supply voltage (V+ – V−) for LMC7221BIM5X/NOPB is 16 V, with recommended operating range from 2.7 V to 15 V. Exceeding 16 V risks permanent damage; operation above 15 V is not characterized or guaranteed per the datasheet.
Does LMC7221BIM5X/NOPB support true rail-to-rail input operation?
Yes, LMC7221BIM5X/NOPB features rail-to-rail input with common-mode range extending 0.3 V beyond both supply rails (V− − 0.3 V to V+ + 0.3 V), verified across 2.7 V, 5 V, and 15 V supplies per electrical characteristics tables.
What is the input offset voltage specification for LMC7221BIM5X/NOPB?
LMC7221BIM5X/NOPB is the BI grade variant with a maximum input offset voltage of 5 mV at 25°C, 2.7 V supply. The typical value is 3 mV, and temperature drift is specified at 1.0 μV/°C for 5 V operation.
Can LMC7221BIM5X/NOPB drive an LED directly?
Yes, LMC7221BIM5X/NOPB can sink up to 5 mA at 5 V supply with VOL ≤ 0.4 V, sufficient to drive low-current indicator LEDs. A series current-limiting resistor must be used; the open-drain output requires external pull-up for high-state definition.
Is LMC7221BIM5X/NOPB RoHS compliant and lead-free?
Yes, LMC7221BIM5X/NOPB carries the /NOPB suffix indicating RoHS-compliant, lead-free construction with green (low-halogen) molding compound and Sn (tin) lead finish, per TI's Package Option Addendum dated February 2020.
LMC7221BIM5X/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- 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):
- 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
LMC7221BIM5X/NOPB FAQ
1.How can I place an order for LMC7221BIM5X/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC7221BIM5X/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 LMC7221BIM5X/NOPB reliable?
The price and inventory of LMC7221BIM5X/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC7221BIM5X/NOPB is usually 5 days.
3.What payment methods are accepted for LMC7221BIM5X/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC7221BIM5X/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC7221BIM5X/NOPB?
LMC7221BIM5X/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC7221BIM5X/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 LMC7221BIM5X/NOPB?
For technical support, including LMC7221BIM5X/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC7221BIM5X/NOPB requirements.
6.How does Aetrix verify that LMC7221BIM5X/NOPB is sourced from the original manufacturer or authorized distributors?
All LMC7221BIM5X/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 LMC7221BIM5X/NOPB meets industry standards.
7.What is the process for return or replacement of LMC7221BIM5X/NOPB?
All LMC7221BIM5X/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMC7221BIM5X/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 LMC7221BIM5X/NOPB part is unused and in its original packaging.
Return procedure for LMC7221BIM5X/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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