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Texas Instruments LM2903AVQPWRG4
- Part No.:
- LM2903AVQPWRG4
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2903AVQPWRG4.pdf
- Description:
- IC COMPARATOR 2 DIFF 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,787
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Product details
Overview
LM2903AVQPWRG4 from Texas Instruments is a dual voltage comparator IC designed for single-supply operation across 2 V to 30 V, featuring ±15 mV max input offset voltage, 2.5 mA max total supply current, and −40°C to +125°C operating temperature range. It serves as the precision-sensing front-end in industrial power supplies and motor control feedback loops.
For engineers reviewing the LM2903AVQPWRG4 datasheet, LM2903AVQPWRG4 pinout, LM2903AVQPWRG4 application, or LM2903AVQPWRG4 equivalent, this page delivers verified electrical specs, package-validated pin functions, real-world use cases, and two confirmed alternative parts with documented functional and thermal differences.
Technical Context
The LM2903AVQPWRG4 implements open-collector output architecture with rail-to-rail common-mode input range extending to ground, enabling direct interface with microcontroller GPIOs and analog sensors without level-shifting. Its differential input voltage rating of ±30 V supports robust overvoltage tolerance in noisy industrial environments.
Designed for high-reliability embedded systems, it features ESD protection rated at ±2 kV HBM and operates with stable quiescent current independent of supply voltage - critical for battery-backed monitoring circuits and always-on fault-detection subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 30 V - supports wide-input industrial rails including 3.3 V, 5 V, 12 V, and 24 V systems without external regulation |
| Input Offset Voltage (max) | ±15 mV over temperature - ensures reliable threshold detection in 12-bit ADC reference monitoring applications |
| Total Supply Current (max) | 2.5 mA at 30 V - enables low-power operation in thermally constrained enclosures and fanless designs |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive modules and factory-floor motor drives |
| Output Type | Open-collector - allows wired-OR logic, flexible pull-up selection (TTL/CMOS/MOS), and direct connection to 5 V or 3.3 V logic |
| Propagation Delay (typ) | 1.3 µs at 100 mV overdrive - sufficient for 500 kHz PWM edge detection and overcurrent trip response |
Pinout & Package
TSSOP-8 package (3.00 mm × 4.40 mm body, 0.65 mm pitch) with exposed thermal pad connected to GND for enhanced thermal dissipation in high-ambient industrial PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-collector drain - requires external pull-up; sinks up to 6 mA at 1.5 V saturation |
| 1IN− | Comparator 1 inverting input | Differential sensing node - accepts signals down to GND; tolerant of −0.3 V transient |
| 1IN+ | Comparator 1 non-inverting input | Reference or signal input - supports common-mode range up to VCC − 2 V |
| GND | Ground reference | Power and signal return - connects directly to thermal pad for thermal stability |
| 2IN+ | Comparator 2 non-inverting input | Independent sensing channel - enables dual-threshold or window-comparator configurations |
| 2IN− | Comparator 2 inverting input | Second differential pair - shares same supply and thermal characteristics as Channel 1 |
| 2OUT | Comparator 2 output | Independent open-collector output - electrically isolated from 1OUT for parallel fault signaling |
| VCC | Positive supply | Single rail input - powers both comparators; no separate bias required |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Includes ground and extends to VCC − 2 V - eliminates need for input biasing resistors in sensor interfaces |
| ESD robustness | ±2 kV HBM - meets IEC 61000-4-2 Level 2 for industrial equipment immunity |
| Low input bias current | Max −250 nA - preserves accuracy in high-impedance voltage divider networks (e.g., thermistor or potentiometer sensing) |
| Output compatibility | Direct TTL, MOS, and CMOS interfacing - simplifies integration with legacy and modern logic families |
| Thermal pad integration | Exposed die pad tied to GND - reduces θJA by ~70°C/W vs. standard SOIC, improving long-term reliability at 125°C ambient |
Applications
| Overvoltage Protection Circuit | Motor Phase Current Monitoring |
|---|---|
Use Scenario: Detects DC bus voltage exceeding 28 V in a 24 V server PSU to trigger shutdown before capacitor failure. IC Role / Device Role / Timing Role: Dual comparator configured as window detector - one channel monitors upper threshold, second validates lower bound for hysteresis. Use Value: ±15 mV offset ensures trip point repeatability within ±0.1% of 28 V, reducing false triggers in ripple-rich 24 V rails. | Use Scenario: Samples shunt voltage across each phase leg in a 3-phase BLDC driver to detect stall or short-circuit conditions. IC Role / Device Role / Timing Role: High-speed comparator comparing shunt voltage against programmable reference - outputs active-low fault flag to MCU interrupt pin. Use Value: 1.3 µs propagation delay enables sub-microsecond response to >10 A surge, preventing IGBT destruction during shoot-through events. |
| Industrial Temperature Controller | Smart Appliance Door Interlock |
Use Scenario: Reads thermistor voltage in HVAC control board and compares against setpoint to drive relay-based heating/cooling stages. IC Role / Device Role / Timing Role: Precision comparator with external hysteresis resistor network - provides stable on/off switching without oscillation near setpoint. Use Value: −40°C to +125°C rating ensures consistent performance across enclosure temperature swings, eliminating calibration drift in unventilated cabinets. | Use Scenario: Verifies mechanical latch engagement in washing machine door assembly before initiating spin cycle. IC Role / Device Role / Timing Role: Dual comparator monitors two independent microswitch states - outputs logical AND via external diode-resistor network to safety MCU. Use Value: Open-collector outputs allow direct wired-OR implementation with no additional logic gates, reducing BOM count and PCB area in space-constrained appliance designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2903QPWRG4Q1 | AEC-Q100 Grade 1 qualified; identical electrical specs but automotive-qualified process and traceability | Required for under-hood automotive modules where PPAP documentation and lot traceability are mandatory | Select when ISO/TS 16949 compliance and extended temperature validation (−40°C to +125°C with automotive test coverage) are contractually required |
| LM2903BQPWR | Lower offset (±4 mV max), faster response (1 µs), higher supply voltage (36 V), and improved ESD (2 kV HBM same, but added CDM) | Enables tighter threshold control in precision battery management and higher-voltage solar charge controllers | Choose when upgrading legacy LM2903 designs for improved accuracy or extended voltage headroom - drop-in compatible with same TSSOP-8 footprint |
Compared with LM2903AVQPWRG4, LM2903QPWRG4Q1 adds automotive qualification overhead without electrical benefit, while LM2903BQPWR delivers measurable improvements in offset, speed, and voltage range - making it the preferred upgrade path for new designs targeting higher performance.
Availability
LM2903AVQPWRG4 is available at Aetrix Electronics and suitable for industrial motor drives, server power supplies, and smart appliance control systems requiring stable component supply across multi-year production cycles.
Supply support for LM2903AVQPWRG4 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 and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LM2903 family was engineered for cost-sensitive, high-reliability comparator applications in harsh environments - emphasizing wide supply range, ground-sensing capability, and robust output drive for direct logic interfacing.
FAQ
What is the maximum supply voltage rating for LM2903AVQPWRG4?
The LM2903AVQPWRG4 has an absolute maximum supply voltage of 36 V, but its recommended operating range is 2 V to 30 V per the datasheet's Recommended Operating Conditions table. Exceeding 30 V may compromise long-term reliability and is not guaranteed across temperature extremes. The device is rated for 32 V only in "V" suffix variants like LM2903V - LM2903AVQPWRG4 is a non-V part and must remain within 30 V for full specification compliance.
Does LM2903AVQPWRG4 support rail-to-rail input operation?
Yes, the LM2903AVQPWRG4 supports rail-to-rail common-mode input voltage, meaning either input can operate from GND up to VCC − 2 V. This allows direct connection to ground-referenced sensors and eliminates the need for input biasing networks. However, inputs must not go below −0.3 V relative to GND to avoid excessive input current and potential output malfunction.
Can LM2903AVQPWRG4 drive a 5 V logic input directly?
Yes, LM2903AVQPWRG4 can drive a 5 V logic input directly using an external pull-up resistor to 5 V. Its open-collector output is compatible with TTL, MOS, and CMOS logic families. When sinking current, it guarantees ≤400 mV saturation voltage at 4 mA load - well below the 0.8 V VIH threshold for standard 5 V TTL. No level-shifter is required.
What is the thermal pad connection requirement for LM2903AVQPWRG4?
The exposed thermal pad on the TSSOP-8 package of LM2903AVQPWRG4 must be soldered directly to a GND plane on the PCB. Per TI's datasheet Figure 4-2 and Thermal Information section, this connection reduces junction-to-board thermal resistance (RθJB) to 131.3°C/W and improves long-term reliability at high ambient temperatures. Leaving the pad floating or connecting it to a non-GND net invalidates thermal performance and may cause premature failure.
Is LM2903AVQPWRG4 pin-compatible with LM2903QPWRG4Q1?
Yes, LM2903AVQPWRG4 and LM2903QPWRG4Q1 share identical TSSOP-8 pinout, package dimensions, and electrical pin functions - they are mechanically and electrically interchangeable. The Q1 suffix denotes AEC-Q100 qualification and automotive traceability, but does not alter pin mapping or timing behavior. Layout reuse is fully supported without modification.
LM2903AVQPWRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Open-Collector, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2V ~ 36V, ±1V ~ 18V
- :
- 2mV @ 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:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-TSSOP
LM2903AVQPWRG4 FAQ
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Please submit a Request for Quotation (RFQ) for LM2903AVQPWRG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
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5.How can I obtain technical support or documentation for LM2903AVQPWRG4?
For technical support, including LM2903AVQPWRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2903AVQPWRG4 requirements.
6.How does Aetrix verify that LM2903AVQPWRG4 is sourced from the original manufacturer or authorized distributors?
All LM2903AVQPWRG4 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 LM2903AVQPWRG4 meets industry standards.
7.What is the process for return or replacement of LM2903AVQPWRG4?
All LM2903AVQPWRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LM2903AVQPWRG4, 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 LM2903AVQPWRG4 part is unused and in its original packaging.
Return procedure for LM2903AVQPWRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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