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Texas Instruments LMC7225IM5/NOPB
- Part No.:
- LMC7225IM5/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMC7225IM5/NOPB.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,617
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Product details
Overview
LMC7225IM5/NOPB from Texas Instruments is a micro-power, rail-to-rail CMOS comparator with open-drain output, designed for ultra-low-power battery-operated systems. It delivers 0.7 μA typical supply current, operates from 2V to 8V, features input common-mode range beyond rails (−0.3 V to 5.3 V at VS = 5 V), and supports level-shifting up to 15 V via external pull-up. It is used in handheld electronics for voltage monitoring and low-power wake-up detection.
For engineers reviewing the LMC7225IM5/NOPB datasheet, LMC7225IM5/NOPB pinout, LMC7225IM5/NOPB application, or LMC7225IM5/NOPB equivalent, key selection criteria include its open-drain architecture enabling flexible logic-level translation, sub-1 μA quiescent current, rail-to-rail input capability for single-supply sensing, and verified latch-up immunity (>300 mA).
Technical Context
The LMC7225IM5/NOPB implements a high-gain CMOS comparator core (140 dB voltage gain) with ESD-protected inputs extending beyond V+ and V−, enabling direct sensing of supply voltages or current-sense resistor drops without clamping diodes. Its open-drain output requires an external pull-up resistor to define logic-high voltage-supporting level translation to any voltage ≤15 V.
It achieves propagation delays of 24 μs (high-to-low) and 29 μs (low-to-high) at 10 mV overdrive with 5 V supply, and maintains stable operation across −40°C to +85°C. Input offset voltage is typically 1 mV (max 6 mV), with average drift of 2 μV/°C and input bias current as low as 5 fA-enabling precision threshold detection in high-impedance sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 0.7 μA typical - enables multi-year battery life in always-on monitoring circuits |
| Supply Voltage Range | 2 V to 8 V - supports single-cell Li-ion, dual-cell alkaline, and regulated 3.3 V/5 V rails |
| Input Common-Mode Range | −0.3 V to 5.3 V at VS = 5 V - allows direct connection to VCC or ground-referenced sense points |
| Output Type | Open-drain - permits wired-OR configuration and level shifting up to 15 V with external pull-up |
| Propagation Delay | 24 μs (tPHL) / 29 μs (tPLH) at 10 mV overdrive, 5 V - suitable for RC timers and slow-response alarm triggers |
| Input Offset Voltage | 1 mV typical (6 mV max) - ensures accurate threshold detection in precision window comparators |
| Latch-up Immunity | >300 mA - eliminates risk of destructive latch-up during transient overvoltage events |
Pinout & Package
LMC7225IM5/NOPB is housed in a 5-pin SOT-23 package (DBV drawing), measuring 2.9 mm × 1.6 mm × 1.45 mm, RoHS-compliant, with moisture sensitivity level (MSL) 1 and lead finish Sn (matte tin).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Open-drain output | Drains current only; requires external pull-up for logic-high assertion and level translation |
| 2 (−IN) | Inverting input | High-impedance node (5 fA bias) for reference or feedback signal routing |
| 3 (GND) | Ground reference | Return path for supply and output load; must be low-impedance for noise immunity |
| 4 (+IN) | Non-inverting input | Accepts signals beyond rails (e.g., VCC or >VCC) due to internal ESD diode protection |
| 5 (V+) | Positive supply | Single-supply input supporting 2 V–8 V; powers internal circuitry and defines output swing limits |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 0.7 μA typical supply current enables >10-year operation on CR2032 coin cell in duty-cycled monitoring |
| Rail-to-rail input with overvoltage tolerance | Inputs operate from −0.3 V to V+ + 0.3 V, allowing direct sensing of supply rails or high-side current shunts |
| Open-drain output with 15 V level-shift capability | Supports interface to 3.3 V, 5 V, or 12 V logic domains using one external resistor-no level-shifter IC required |
| High ESD and latch-up immunity | 2 kV HBM ESD rating and >300 mA latch-up test compliance ensure robustness in industrial and automotive environments |
| Wide temperature range | Specified from −40°C to +85°C - validated for use in portable medical devices and metering equipment |
Applications
| Handheld Power Monitoring | Low-Power Wake-Up Circuit |
|---|---|
Use Scenario: Detecting battery voltage drop below 3.0 V in a portable diagnostic device to trigger sleep mode entry. IC Role / Device Role / Timing Role: Comparator compares battery voltage against precision 3.0 V reference; open-drain output drives MCU interrupt pin. Use Value: 0.7 μA quiescent current minimizes standby drain; rail-to-rail input allows direct battery sensing without resistive divider. |
Use Scenario: Waking an MCU from deep sleep when ambient light exceeds threshold via photodiode signal. IC Role / Device Role / Timing Role: Compares photodiode amplifier output to adjustable threshold; open-drain output pulls MCU WAKE pin low. Use Value: 5 fA input bias avoids loading high-impedance photodiode node; sub-1 μA supply current preserves sleep-state efficiency. |
| RC Timer with Adjustable Period | Overvoltage Alarm in Metering System |
Use Scenario: Generating precise time delays in energy-meter calibration routines using R-C network and hysteresis. IC Role / Device Role / Timing Role: Configured as relaxation oscillator with feedback hysteresis; output toggles based on capacitor charge/discharge. Use Value: 24–29 μs propagation delay ensures predictable timing accuracy; low input current prevents RC time constant drift. |
Use Scenario: Alerting system failure when mains-derived 5 V rail exceeds 5.5 V in smart electricity meter. IC Role / Device Role / Timing Role: Monitors regulated 5 V rail against 5.5 V zener reference; open-drain output drives LED driver or fault latch. Use Value: Input common-mode range extends to 5.3 V at 5 V supply, enabling direct rail monitoring without attenuation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3701IDBVR | Push-pull output, 1.8 μA supply current, 36 V max supply, no over-rail input | Requires pull-up for wired-OR; higher IQ reduces battery life; wider supply range suits industrial sensors | Select TLV3701IDBVR only if push-pull drive and 36 V operation outweigh need for ultra-low IQ and over-rail input |
| MAX9022AUB+ | Open-drain output, 1.5 μA supply current, 5.5 V max supply, rail-to-rail input only | Cannot sense above V+; lower max supply limits use in 8 V systems; smaller offset (0.5 mV typ) improves accuracy | Choose MAX9022AUB+ when precision <1 mV offset is critical and supply stays ≤5.5 V |
Compared with TLV3701IDBVR and MAX9022AUB+, the LMC7225IM5/NOPB uniquely combines sub-1 μA supply current, true over-rail input capability, and open-drain flexibility-making it optimal for long-life, single-supply, level-shifting applications where input voltage may exceed V+.
Availability
LMC7225IM5/NOPB is available at Aetrix Electronics and suitable for handheld electronics, battery-powered metering systems, and low-power alarm circuits requiring stable component supply across extended production lifecycles.
Supply support for LMC7225IM5/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 delivering analog and embedded processing solutions, with leadership in precision analog, low-power design, and automotive-grade reliability.
The LMC7225IM5/NOPB belongs to TI's LMC72xx micro-power comparator family, engineered specifically for energy-constrained applications demanding rail-to-rail input operation, open-drain flexibility, and guaranteed performance across industrial temperature ranges.
FAQ
What is the maximum supply voltage for LMC7225IM5/NOPB?
The absolute maximum supply voltage for LMC7225IM5/NOPB is 10 V, but the recommended operating range is 2 V to 8 V per the datasheet. Operation at 8 V is fully characterized and supported across −40°C to +85°C, while 10 V is a stress limit not intended for continuous use. Exceeding 8 V risks parametric degradation or reduced reliability.
Does LMC7225IM5/NOPB support input voltages higher than V+?
Yes, LMC7225IM5/NOPB supports input voltages up to V+ + 0.3 V and down to V− − 0.3 V. At V+ = 5 V, the input common-mode range extends to 5.3 V, enabling direct connection to 5 V supply rails or high-side current-sense nodes without attenuation. This over-rail capability is enabled by internal ESD protection diodes.
Can LMC7225IM5/NOPB drive an LED directly?
No, LMC7225IM5/NOPB cannot drive an LED directly because its open-drain output can only sink current-not source it. To drive an LED, connect the anode to a positive supply (e.g., 3.3 V or 5 V) and the cathode to the OUT pin (Pin 1); the LED illuminates when the comparator asserts low. Current is limited by the series resistor, not the device.
What is the purpose of the open-drain output in LMC7225IM5/NOPB?
The open-drain output in LMC7225IM5/NOPB enables wired-OR logic, level shifting to voltages up to 15 V (with appropriate external pull-up), and compatibility with mixed-voltage systems. It eliminates shoot-through current and simplifies interfacing to microcontrollers, FPGAs, or other logic that accepts open-drain inputs-unlike push-pull comparators such as the LMC7215.
Is LMC7225IM5/NOPB suitable for automotive applications?
LMC7225IM5/NOPB is not automotive-qualified. The automotive-grade variant is LMC7215-Q1 (not LMC7225-Q1), which meets AEC-Q100 Grade 3. LMC7225IM5/NOPB is rated for −40°C to +85°C and carries no AEC-Q100 certification-so it is appropriate for industrial, medical, and consumer portable equipment but not safety-critical automotive ECUs.
LMC7225IM5/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 (±):
- 2V ~ 8V, ±1V ~ 4V
- :
- 6mV @ 5V
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- 30mA
- Current - Output (Typ):
- 1µA
- Current - Quiescent (Max):
- 80dB CMRR, 90dB PSRR
- CMRR, PSRR (Typ):
- 29µs
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-5
LMC7225IM5/NOPB FAQ
1.How can I place an order for LMC7225IM5/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMC7225IM5/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 LMC7225IM5/NOPB reliable?
The price and inventory of LMC7225IM5/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMC7225IM5/NOPB is usually 5 days.
3.What payment methods are accepted for LMC7225IM5/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMC7225IM5/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMC7225IM5/NOPB?
LMC7225IM5/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMC7225IM5/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 LMC7225IM5/NOPB?
For technical support, including LMC7225IM5/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMC7225IM5/NOPB requirements.
6.How does Aetrix verify that LMC7225IM5/NOPB is sourced from the original manufacturer or authorized distributors?
All LMC7225IM5/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 LMC7225IM5/NOPB meets industry standards.
7.What is the process for return or replacement of LMC7225IM5/NOPB?
All LMC7225IM5/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMC7225IM5/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 LMC7225IM5/NOPB part is unused and in its original packaging.
Return procedure for LMC7225IM5/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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