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Texas Instruments LM2903PWRG3
- Part No.:
- LM2903PWRG3
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2903PWRG3.pdf
- Description:
- IC COMPARATOR 2 DIFF 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,036
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Product details
Overview
LM2903PWRG3 from Texas Instruments is a dual precision voltage comparator in an 8-pin TSSOP package, designed for single-supply operation from 2 V to 36 V. It delivers ±0.37 mV typical input offset voltage, 200 µA per comparator quiescent current, 1 µs propagation delay, rail-to-rail input common-mode range including ground, and TTL/CMOS/MOS-compatible open-collector outputs - enabling robust level detection in industrial power supplies and motor control feedback loops.
For engineers reviewing the LM2903PWRG3 datasheet, LM2903PWRG3 pinout, LM2903PWRG3 application, or LM2903PWRG3 equivalent, key selection criteria include its −40°C to +125°C operating temperature range, 38 V absolute maximum supply rating (B-version), 2 kV HBM ESD rating, differential input voltage tolerance of ±38 V, and compatibility with legacy LM2903 designs without layout changes.
Technical Context
The LM2903PWRG3 implements two independent, high-voltage open-collector comparators with internal ESD clamps and rail-to-rail input capability down to ground. Its architecture supports wide common-mode input voltages (−0.1 V to VCC − 2 V) and tolerates differential inputs up to ±38 V, making it suitable for high-side sensing and noisy industrial environments.
Each comparator features low input bias current (3.5 nA typ), low output saturation voltage (110 mV at 4 mA sink), and stable performance across 2 V–36 V supply rails. Quiescent current remains supply-independent, and propagation delay is specified at 1 µs under TTL-level transitions with 5.1 kΩ pull-up and 15 pF load.
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 | ±0.37 mV (typ) - enables accurate threshold detection within <1 mV error over temperature |
| Quiescent Current | 400–600 µA (total, 200 µA per comparator) - ultra-low power for always-on monitoring circuits |
| Propagation Delay | 1 µs (typ, TTL input step) - fast response for real-time overvoltage/undervoltage protection |
| Input Bias Current | 3.5 nA (typ) - minimizes loading on high-impedance sensor sources like thermistors or photodiodes |
| ESD Rating (HBM) | 2000 V - meets industrial handling requirements without additional board-level protection |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and factory automation environments |
Pinout & Package
LM2903PWRG3 is housed in an 8-pin TSSOP (PW) package measuring 3.00 mm × 4.40 mm, with standard SOIC-compatible footprint and gull-wing leads. Thermal performance is characterized by RθJA = 200.6°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-collector output requiring external pull-up; sinks up to 21 mA at 1.5 V drop |
| 1IN− | Comparator 1 inverting input | Differential input node; accepts voltages from −0.1 V to VCC − 2 V |
| 1IN+ | Comparator 1 non-inverting input | Differential input node; same voltage range as 1IN−; supports rail-to-rail common-mode |
| GND | Ground reference | System return path; thermal pad (if present) must be connected to GND for optimal thermal performance |
| 2IN+ | Comparator 2 non-inverting input | Independent input for second channel; identical electrical specs to 1IN+ |
| 2IN− | Comparator 2 inverting input | Independent input for second channel; identical electrical specs to 1IN− |
| 2OUT | Comparator 2 output | Open-collector output, electrically isolated from 1OUT; shares no internal coupling |
| VCC | Positive supply | Single supply input; supports up to 36 V continuous, 38 V absolute max |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range including ground | Enables direct interface with 0 V-referenced sensors (e.g., current-sense resistors, thermocouples) without level-shifting circuitry |
| ±38 V differential input voltage tolerance | Permits safe operation with large signal swings across inputs - critical for high-side bus monitoring and fault detection |
| 2 kV HBM ESD rating with dedicated clamps | Reduces need for external TVS diodes in assembly-line and field-deployed systems |
| Drop-in replacement for LM2903, LM2903V, LM2903AV | Preserves existing PCB layouts and firmware logic while improving offset, speed, and ruggedness |
| Low 200 µA/comparator quiescent current | Extends battery life in portable diagnostics tools and enables always-on status monitoring in standby modes |
Applications
| Motor Drive Protection | Server PSU Monitoring |
|---|---|
|
Use Scenario: Real-time overcurrent detection in BLDC motor gate driver feedback paths. IC Role / Device Role / Timing Role: Dual comparator compares sensed shunt voltage against programmable thresholds to trigger immediate shutdown. Use Value: 1 µs response time ensures MOSFETs are disabled before destructive current peaks occur; ±0.37 mV offset enables precise trip points at millivolt-level sense signals. |
Use Scenario: Redundant voltage supervision across +12 V, +5 V, and +3.3 V rails in enterprise server power supplies. IC Role / Device Role / Timing Role: One comparator per rail monitors undervoltage/overvoltage conditions and asserts system reset via open-collector wired-OR. Use Value: −40°C to +125°C rating ensures reliability across full server thermal envelope; 36 V supply headroom accommodates transient spikes without latch-up. |
| Industrial Vacuum Robot Control | Factory Automation Sensor Interface |
|
Use Scenario: Pressure threshold detection in vacuum gripper manifolds to confirm part pickup and release. IC Role / Device Role / Timing Role: Compares analog pressure transducer output to fixed reference to generate discrete ON/OFF control signals. Use Value: Rail-to-rail input allows direct connection to ratiometric sensors powered from same 5 V rail; low 3.5 nA bias current prevents measurement drift in high-Z bridges. |
Use Scenario: Level translation and noise-immune signal conditioning for 4–20 mA loop receivers and proximity switch interfaces. IC Role / Device Role / Timing Role: Configured as window comparator or zero-crossing detector to convert analog sensor outputs into clean digital logic levels. Use Value: ±38 V differential input withstands induced transients on long factory-floor wiring; 2 kV HBM rating eliminates need for external ESD protection on I/O connectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2903DR | SOIC-8 package (4.90 mm × 3.91 mm); same B-version specs but higher RθJA (148.5°C/W) | Better suited for through-hole prototyping or legacy board upgrades where TSSOP rework is impractical | Select LM2903DR when board space permits larger footprint and thermal management relies on copper pour rather than package conduction |
| LM2903QDRQ1 | AEC-Q100 Grade 1 qualified (−40°C to +125°C); identical electrical specs plus automotive-specific test reporting | Required for functional safety-compliant automotive body control modules and ADAS power domains | Choose LM2903QDRQ1 only when ISO 26262 ASIL-B evidence, PPAP documentation, and lot traceability are mandated |
Compared with LM2903DR and LM2903QDRQ1, the LM2903PWRG3 offers optimal thermal performance in space-constrained industrial PCBs due to its TSSOP package's lower RθJA, while retaining full B-version specification compliance without automotive qualification overhead.
Availability
LM2903PWRG3 is available at Aetrix Electronics and suitable for motor drive protection, server PSU monitoring, and factory automation sensor interface applications requiring stable component supply across extended temperature and voltage ranges.
Supply support for LM2903PWRG3 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 solutions for industrial, automotive, and communications markets.
The LM2903B family - including LM2903PWRG3 - was engineered to upgrade legacy LM2903 designs with tighter offset, faster response, higher voltage tolerance, and enhanced ESD robustness for demanding industrial control and power management systems.
FAQ
What is the maximum supply voltage rating for LM2903PWRG3?
The LM2903PWRG3 has an absolute maximum supply voltage of 38 V, exceeding the 36 V recommended operating limit. This 2 V margin provides design headroom for transient spikes in industrial power rails, ensuring reliable operation without damage during line surges or hot-swap events. Always observe the 36 V continuous rating for long-term reliability.
Does LM2903PWRG3 support rail-to-rail input operation?
Yes, the LM2903PWRG3 supports rail-to-rail input common-mode voltage range, extending from −0.1 V below ground to VCC − 2 V. This allows direct interfacing with grounded sensors (e.g., current-shunt amplifiers) and high-side voltage dividers without external level-shifting components, simplifying analog front-end design.
Can LM2903PWRG3 replace legacy LM2903 designs without PCB changes?
Yes, LM2903PWRG3 is a pin-to-pin and functionally compatible drop-in replacement for LM2903, LM2903V, and LM2903AV in TSSOP-8 footprint. Electrical improvements - including ±0.37 mV offset, 1 µs response, and 2 kV HBM ESD - require no schematic or layout modifications, enabling immediate performance uplift in existing designs.
What is the output configuration of LM2903PWRG3?
The LM2903PWRG3 features two independent open-collector outputs (1OUT and 2OUT), each capable of sinking up to 21 mA with a 1.5 V saturation voltage. External pull-up resistors are required to define logic-high levels; outputs can be wire-OR'd for shared interrupt signaling, supporting flexible system-level fault aggregation.
Is LM2903PWRG3 suitable for automotive applications?
The LM2903PWRG3 operates across −40°C to +125°C and meets industrial reliability standards, but it is not AEC-Q100 qualified. For automotive use, TI recommends the LM2903QDRQ1 variant, which provides full Grade 1 qualification, PPAP documentation, and ASIL-B-ready test reports - essential for safety-critical vehicle subsystems.
LM2903PWRG3 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 @ 30V
- 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:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-TSSOP
LM2903PWRG3 FAQ
1.How can I place an order for LM2903PWRG3 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2903PWRG3 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 LM2903PWRG3 reliable?
The price and inventory of LM2903PWRG3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2903PWRG3 is usually 5 days.
3.What payment methods are accepted for LM2903PWRG3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2903PWRG3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2903PWRG3?
LM2903PWRG3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2903PWRG3 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 LM2903PWRG3?
For technical support, including LM2903PWRG3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2903PWRG3 requirements.
6.How does Aetrix verify that LM2903PWRG3 is sourced from the original manufacturer or authorized distributors?
All LM2903PWRG3 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 LM2903PWRG3 meets industry standards.
7.What is the process for return or replacement of LM2903PWRG3?
All LM2903PWRG3 units undergo pre-shipment inspection (PSI). If there is an issue with LM2903PWRG3, 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 LM2903PWRG3 part is unused and in its original packaging.
Return procedure for LM2903PWRG3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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