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Texas Instruments LM2903VQPWR
- Part No.:
- LM2903VQPWR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2903VQPWR.pdf
- Description:
- IC COMPARATOR 2 DIFF 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,930
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Product details
Overview
LM2903VQPWR from Texas Instruments is a dual precision voltage comparator designed for single-supply operation across 2 V to 36 V, featuring ±0.37 mV typical input offset voltage, 3.5 nA typical input bias current, 200 µA per comparator quiescent current, and 1 µs propagation delay. It serves as a robust signal-level decision element in industrial power supply monitoring and motor control feedback loops.
For engineers reviewing the LM2903VQPWR datasheet, LM2903VQPWR pinout, LM2903VQPWR application, or LM2903VQPWR equivalent, this page delivers verified electrical specifications, package-validated pin functions, temperature-rated performance boundaries (–40°C to +125°C), and drop-in alternative options aligned with TI's B-version comparator family.
Technical Context
The LM2903VQPWR implements two independent open-collector comparators with rail-to-rail input common-mode range extending to ground and differential input capability up to ±38 V. Its internal ESD clamps provide 2 kV HBM protection, and its low input bias current enables high-impedance sensing without loading source networks.
Designed for direct replacement of legacy LM2903 variants, it maintains identical SOIC-8 pinout and logic behavior while improving offset voltage, supply current, and response time - all without requiring PCB layout changes or external component adjustments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports wide-input industrial and automotive power rails without external regulation |
| Input Offset Voltage (max) | ±4 mV over –40°C to +125°C - ensures accurate threshold detection under thermal stress |
| Input Bias Current (typ) | 3.5 nA - minimizes error in high-impedance voltage divider or sensor interfaces |
| Quiescent Current (per comp) | 200 µA - enables low-power always-on monitoring in battery-backed systems |
| Propagation Delay | 1 µs at 5 V supply - provides fast response for overvoltage/overcurrent fault detection |
| Output Sink Current | 21 mA - drives standard LED indicators, MOSFET gates, or TTL/CMOS inputs directly |
| ESD Rating (HBM) | 2000 V - meets IEC 61000-4-2 Level 2 for board-level handling robustness |
Pinout & Package
The LM2903VQPWR is housed in an 8-pin SOIC package (4.90 mm × 3.91 mm body size) with standard industry footprint and thermal profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-collector output requiring external pull-up; sinks current when IN+ > IN− |
| 1IN− | Comparator 1 inverting input | Accepts reference or feedback signal; common-mode range includes ground |
| 1IN+ | Comparator 1 non-inverting input | Accepts sensed signal; supports input up to VCC without damage |
| GND | Ground reference | Return path for both comparators and internal circuitry; connects to system 0 V |
| 2IN+ | Comparator 2 non-inverting input | Independent sensing node; same voltage tolerance and impedance as 1IN+ |
| 2IN− | Comparator 2 inverting input | Independent reference node; shares GND reference but no internal coupling |
| 2OUT | Comparator 2 output | Open-collector, electrically isolated from 1OUT; supports separate pull-up networks |
| VCC | Positive supply | Single supply input for both comparators; no negative rail required |
Key Features
| Feature | Design Value |
|---|---|
| Drop-in B-version upgrade | Replaces LM2903, LM2903V, and LM2903AV without layout or firmware changes |
| Rail-to-rail input capability | Common-mode range includes ground and extends to VCC − 2 V, enabling direct battery or rail sensing |
| Low propagation delay | 1 µs response time allows real-time fault detection in motor drive and PSU protection circuits |
| High ESD ruggedness | 2 kV HBM rating reduces field failure risk during assembly and system integration |
| Wide temperature operation | Specified from –40°C to +125°C for under-hood, factory automation, and industrial control environments |
Applications
| Power Supply Monitoring | Motor Overcurrent Protection |
|---|---|
Use Scenario: Detecting undervoltage or overvoltage conditions in server PSUs and telecom rectifiers. IC Role / Device Role / Timing Role: Dual comparator compares sensed rail voltages against precision references to assert fault flags. Use Value: Enables immediate shutdown or alert before downstream IC damage occurs, leveraging 1 µs response and ±38 V differential input tolerance. | Use Scenario: Monitoring shunt voltage in cordless power tool motor drivers to prevent thermal runaway. IC Role / Device Role / Timing Role: One comparator detects overcurrent via shunt; second monitors battery voltage for low-charge cutoff. Use Value: Simultaneous dual-threshold detection with shared supply simplifies BOM and reduces board space versus discrete solutions. |
| Factory Automation Sensors | Building HVAC Control |
Use Scenario: Interfacing with RTD or thermistor bridges in PLC analog input modules. IC Role / Device Role / Timing Role: Comparator digitizes analog temperature signals into clean digital thresholds for microcontroller GPIO. Use Value: 3.5 nA input bias current prevents measurement error in high-resistance sensor networks, ensuring accuracy over full temperature range. | Use Scenario: Controlling damper actuators and fan speeds based on CO₂ and temperature thresholds in smart HVAC systems. IC Role / Device Role / Timing Role: Dual comparator implements hysteresis-based on/off control for two independent environmental parameters. Use Value: Open-collector outputs interface directly with 3.3 V or 5 V logic, while rail-to-rail inputs accept sensor outputs without level-shifting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual open-collector comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2903QPWR | Non-B version; higher max input offset (±15 mV), slower response (1.3 µs), wider temp range (–40°C to +125°C retained) | Same pinout and function; suitable where tighter offset or faster response not required | Select when cost sensitivity outweighs precision or speed needs; verify offset drift in high-temp operation |
| LM393BDR | B-version like LM2903VQPWR but rated for –40°C to +85°C only; identical electrical specs otherwise | Not qualified for extended industrial temperature use; limited to commercial-grade applications | Choose for consumer or office equipment where ambient temperature stays below 85°C |
Compared with LM2903QPWR and LM393BDR, the LM2903VQPWR uniquely combines B-version performance (±4 mV offset, 1 µs delay) with full industrial temperature support (–40°C to +125°C) in the standard SOIC-8 package - making it optimal for mission-critical embedded control where reliability and responsiveness are jointly constrained.
Availability
LM2903VQPWR is available at Aetrix Electronics and suitable for industrial power supplies, motor control systems, and factory automation equipment requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.
Supply support for LM2903VQPWR 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 delivering analog, embedded processing, and connectivity technologies for industrial, automotive, and communications markets.
The LM2903VQPWR belongs to TI's B-version dual comparator product line, engineered to replace legacy LM2903-family devices with enhanced precision, speed, and ruggedness for industrial signal conditioning and fault-detection applications.
FAQ
What is the maximum supply voltage rating for LM2903VQPWR?
The LM2903VQPWR supports a maximum supply voltage of 36 V, confirmed in Section 5.1 Absolute Maximum Ratings of the official TI datasheet SLCS005AH. This 36 V rating applies specifically to B-version devices including LM2903VQPWR and exceeds the 32 V limit of non-B LM2903V variants. Operation beyond 36 V risks permanent damage.
Does LM2903VQPWR support rail-to-rail input operation?
Yes, the LM2903VQPWR supports rail-to-rail input operation: its common-mode input voltage range extends from ground (GND) to VCC − 2 V, as specified in Section 5.6 Electrical Characteristics. Either input can safely reach VCC without damage, and one input may remain within the valid common-mode range while the other exceeds it - enabling direct connection to unregulated rails or battery terminals.
Is LM2903VQPWR pin-compatible with older LM2903 variants?
Yes, LM2903VQPWR is pin-compatible with LM2903, LM2903V, and LM2903AV in the SOIC-8 package, as confirmed by identical pin configuration diagrams (Figure 4-1) and functional descriptions in the TI datasheet. No PCB layout changes are required for migration, though design validation should confirm timing and offset margins meet updated B-version specifications.
What is the operating temperature range of LM2903VQPWR?
The LM2903VQPWR is rated for operation from –40°C to +125°C, matching the extended temperature grade of the LM2903B family. This specification is explicitly stated in the Family Comparison Table and Section 5.2 Recommended Operating Conditions, confirming suitability for under-hood automotive, industrial motor drives, and factory automation environments.
Can LM2903VQPWR drive a 5 V logic input directly?
Yes, LM2903VQPWR can drive a 5 V logic input directly using an external pull-up resistor to 5 V on its open-collector output pins. The device's output sink current capability of 21 mA (Section 5.6) exceeds standard TTL and CMOS input current requirements, and its low-level output voltage remains ≤400 mV at 4 mA sink - well within the 0.8 V VIH threshold for 5 V logic families.
LM2903VQPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Open-Collector, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2V ~ 36V, ±1V ~ 18V
- :
- 7mV @ 5V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 2.5mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- 8-TSSOP
LM2903VQPWR FAQ
1.How can I place an order for LM2903VQPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2903VQPWR 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 LM2903VQPWR reliable?
The price and inventory of LM2903VQPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2903VQPWR is usually 5 days.
3.What payment methods are accepted for LM2903VQPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2903VQPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2903VQPWR?
LM2903VQPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2903VQPWR 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 LM2903VQPWR?
For technical support, including LM2903VQPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2903VQPWR requirements.
6.How does Aetrix verify that LM2903VQPWR is sourced from the original manufacturer or authorized distributors?
All LM2903VQPWR 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 LM2903VQPWR meets industry standards.
7.What is the process for return or replacement of LM2903VQPWR?
All LM2903VQPWR units undergo pre-shipment inspection (PSI). If there is an issue with LM2903VQPWR, 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 LM2903VQPWR part is unused and in its original packaging.
Return procedure for LM2903VQPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2903VQPWR Tags
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LM2903DR
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LM339DR
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LM339PWR
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LM393DT
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LM239DR
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