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Texas Instruments LM2903BIDSGR
- Part No.:
- LM2903BIDSGR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LM2903BIDSGR.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:9,176
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Product details
Overview
LM2903BIDSGR from Texas Instruments is a dual precision comparator in an 8-pin WSON package with exposed thermal pad, designed for single-supply operation up to 36 V. It delivers ±0.37 mV typical input offset voltage, 200 µA per comparator quiescent current, 1 µs propagation delay, and operates across –40°C to +125°C - enabling robust voltage monitoring in industrial motor drives and server power supplies.
For engineers reviewing the LM2903BIDSGR datasheet, LM2903BIDSGR pinout, LM2903BIDSGR application, or LM2903BIDSGR equivalent, key selection criteria include its rail-to-rail input capability (down to GND), open-collector outputs compatible with TTL/MOS/CMOS, 2 kV HBM ESD rating, and drop-in replacement support for legacy LM2903 variants without layout changes.
Technical Context
The LM2903BIDSGR implements two independent high-gain comparators with internal ESD clamps that enable ±38 V differential input voltage tolerance and common-mode input range extending to ground. Its architecture supports single-supply operation from 2 V to 36 V while maintaining stable quiescent current independent of supply voltage.
Each comparator features low input bias current (3.5 nA typ), low output saturation voltage (110 mV at 4 mA sink), and fast response time (1 µs typ) optimized for real-time threshold detection in overvoltage protection, battery management, and PWM feedback loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - enables direct integration into 3.3 V, 5 V, 12 V, and 24 V systems without level-shifting. |
| Input Offset Voltage | ±0.37 mV (typ) - ensures accurate threshold detection with minimal error in precision sensing applications. |
| Quiescent Current | 400–600 µA (total, 200 µA per comparator) - supports low-power always-on monitoring in battery-backed systems. |
| Propagation Delay | 1 µs (typ, 5 mV overdrive) - provides timely response for fast fault detection in motor control and UPS circuits. |
| ESD Rating (HBM) | 2 kV - enhances reliability during board handling and in electrically noisy industrial environments. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, factory automation, and telecom infrastructure use. |
| Output Type | Open-collector - allows flexible pull-up to any logic rail (3.3 V, 5 V, 12 V) and wired-OR configuration. |
Pinout & Package
LM2903BIDSGR uses an 8-pin WSON package (2.0 mm × 2.0 mm) with an exposed thermal pad on the underside, requiring direct connection to GND for optimal thermal performance and ESD robustness.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-collector output; must be pulled up externally to define logic-high level. |
| 1IN− | Comparator 1 inverting input | Differential input node; accepts signals down to GND and up to VCC. |
| 1IN+ | Comparator 1 non-inverting input | Differential input node; supports rail-to-rail common-mode range including ground. |
| GND | Ground reference | Primary return path for supply and signal; connects to exposed thermal pad. |
| 2IN+ | Comparator 2 non-inverting input | Independent input channel; identical electrical characteristics to 1IN+. |
| 2IN− | Comparator 2 inverting input | Independent input channel; supports same voltage range and ESD ruggedness as 1IN−. |
| 2OUT | Comparator 2 output | Open-collector output; electrically isolated from 1OUT for dual-threshold designs. |
| VCC | Positive supply | Single supply input (2–36 V); powers both comparators and internal ESD clamps. |
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 in single-supply sensor interfaces. |
| Differential input voltage tolerance | ±38 V - protects against transient overvoltage events in motor drive feedback and industrial I/O. |
| Low input bias current | 3.5 nA (typ) - minimizes loading error when used with high-impedance sources like thermistors or photodiodes. |
| Drop-in replacement capability | Pin- and function-compatible with LM2903, LM2903V, and LM2903AV - enables BOM upgrades without redesign. |
| Exposed thermal pad | Direct GND connection reduces junction-to-board thermal resistance to 63.1°C/W - improves long-term reliability at high ambient temperatures. |
Applications
| Motor Drive Protection | Server PSU Monitoring |
|---|---|
Use Scenario: Real-time overcurrent and overtemperature detection in BLDC motor gate driver circuits. IC Role / Device Role / Timing Role: Dual comparator monitors shunt voltage and NTC thermistor output against fixed thresholds to trigger shutdown within 1 µs. Use Value: Prevents MOSFET failure by responding faster than legacy LM2903 (1.3 µs), reducing thermal stress during fault conditions. | Use Scenario: Redundant voltage margining and brown-out detection in 48 V intermediate bus converters. IC Role / Device Role / Timing Role: One comparator supervises main output (12 V), the other monitors standby rail (3.3 V) with independent pull-ups. Use Value: Enables fail-safe system reset via open-collector wired-OR output, compatible with existing PMBus-based supervisor ICs. |
| Industrial Vacuum Robot | Factory Automation Sensor Interface |
Use Scenario: Pressure and vacuum level monitoring in semiconductor wafer-handling end-effectors. IC Role / Device Role / Timing Role: Compares analog pressure transducer output against programmable thresholds to validate seal integrity before motion. Use Value: ±0.37 mV offset ensures <0.1% full-scale error at 10 V span, critical for sub-millibar vacuum accuracy. | Use Scenario: Analog signal conditioning for 4–20 mA loop-powered sensors in PLC I/O modules. IC Role / Device Role / Timing Role: Comparator detects loop break (0 mA) and overrange (25 mA) conditions using precision resistive dividers. Use Value: 2 kV HBM ESD rating prevents field failures in unshielded factory floor wiring environments. |
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; higher 1.3 µs propagation delay; ±15 mV max offset; rated –40°C to +125°C | Requires PCB footprint change; suitable for cost-sensitive, space-tolerant designs with relaxed speed/accuracy needs | Select when board area and thermal performance are less critical than procurement simplicity. |
| TLV1702IDGKR | RRIO input; 36 V supply; 1.2 µs propagation delay; 0.8 mV max offset; 50 µA per comparator | Higher precision and lower power but lacks B-version ESD ruggedness (1.5 kV HBM) and drop-in compatibility | Choose for ultra-low-power battery systems where rail-to-rail input and microamp quiescent current outweigh ESD margin needs. |
Compared with LM2903DR and TLV1702IDGKR, LM2903BIDSGR uniquely combines WSON miniaturization, 1 µs speed, ±0.37 mV offset, and 2 kV HBM in a drop-in upgrade path - making it optimal for space-constrained, high-reliability industrial control nodes.
Availability
LM2903BIDSGR is available at Aetrix Electronics and suitable for motor drives, server power supplies, and factory automation systems requiring stable component supply, extended temperature operation, and long-term obsolescence mitigation.
Supply support for LM2903BIDSGR 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 series belongs to TI's precision comparator product line, engineered specifically for high-reliability, single-supply industrial sensing and protection applications demanding low offset, wide voltage range, and robust ESD performance.
FAQ
What is the maximum supply voltage rating for LM2903BIDSGR?
The LM2903BIDSGR supports a maximum supply voltage of 36 V, with absolute maximum ratings extending to 38 V for short-duration transients. This exceeds legacy LM2903 (32 V) and enables direct use in 24 V industrial buses and 48 V intermediate distribution networks without external regulation.
Does LM2903BIDSGR require external pull-up resistors on its outputs?
Yes, LM2903BIDSGR features open-collector outputs and requires external pull-up resistors to define the logic-high voltage level. Typical values range from 2.2 kΩ to 10 kΩ depending on rise time and load capacitance requirements; pull-up to 3.3 V, 5 V, or 12 V rails is supported.
Can LM2903BIDSGR replace LM2903 in existing designs without PCB changes?
Yes, LM2903BIDSGR is explicitly documented as a drop-in replacement for LM2903, LM2903V, and LM2903AV in the same DSG (WSON-8) package. Pinout, electrical behavior, and thermal pad connection requirements are identical - no PCB modifications are needed for migration.
What is the input common-mode voltage range of LM2903BIDSGR?
The input common-mode voltage range of LM2903BIDSGR extends from ground (0 V) to VCC − 2 V, supporting true rail-to-rail input operation down to GND. This eliminates input biasing networks required by older comparators and simplifies interface with sensors referenced to system ground.
How does the exposed thermal pad on LM2903BIDSGR improve thermal performance?
The exposed thermal pad on LM2903BIDSGR, when soldered directly to a GND plane, reduces junction-to-board thermal resistance to 63.1°C/W - a 45% improvement over SOIC-8 packages. This lowers die temperature under continuous 36 V operation, extending lifetime in high-ambient industrial environments.
LM2903BIDSGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-WFDFN Exposed Pad
- 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 (±):
- 3V ~ 36V, ±1.5V ~ 18V
- :
- 2.5mV @ 36V
- Voltage - Input Offset (Max):
- 0.025µA @ 5V
- Current - Input Bias (Max):
- 21mA @ 5V
- Current - Output (Typ):
- 600µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 1µs (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-WSON (2x2)
LM2903BIDSGR FAQ
1.How can I place an order for LM2903BIDSGR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2903BIDSGR 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 LM2903BIDSGR reliable?
The price and inventory of LM2903BIDSGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2903BIDSGR is usually 5 days.
3.What payment methods are accepted for LM2903BIDSGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2903BIDSGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2903BIDSGR?
LM2903BIDSGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2903BIDSGR 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 LM2903BIDSGR?
For technical support, including LM2903BIDSGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2903BIDSGR requirements.
6.How does Aetrix verify that LM2903BIDSGR is sourced from the original manufacturer or authorized distributors?
All LM2903BIDSGR 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 LM2903BIDSGR meets industry standards.
7.What is the process for return or replacement of LM2903BIDSGR?
All LM2903BIDSGR units undergo pre-shipment inspection (PSI). If there is an issue with LM2903BIDSGR, 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 LM2903BIDSGR part is unused and in its original packaging.
Return procedure for LM2903BIDSGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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