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Texas Instruments LM2903BWDSGRQ1
- Part No.:
- LM2903BWDSGRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LM2903BWDSGRQ1.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:7,236
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Product details
Overview
LM2903BWDSGRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified dual open-drain comparator for automotive systems, operating from 2 V to 36 V supply, with ±0.37 mV typical input offset voltage, 3.5 nA typical input bias current, and 1 µs typical propagation delay. It serves in HEV/EV powertrain monitoring, body control module voltage supervision, and infotainment system level-shifting circuits.
For engineers reviewing the LM2903BWDSGRQ1 datasheet, LM2903BWDSGRQ1 pinout, LM2903BWDSGRQ1 application, or LM2903BWDSGRQ1 equivalent, key selection criteria include its automotive-grade temperature range (–40°C to +125°C), open-collector TTL/MOS/CMOS-compatible outputs, low quiescent current (600 µA max at 36 V), ESD robustness (2 kV HBM), and guaranteed operation with inputs extending to ground.
Technical Context
The LM2903BWDSGRQ1 implements a PNP Darlington-pair input stage enabling high gain, fast response, and ultra-low input bias current while supporting common-mode input voltages down to ground. Its output stage is a single NPN open-drain transistor per comparator, requiring external pull-up for logic-high assertion and enabling wired-AND functionality.
It operates across dual supplies if the differential voltage remains within 2 V to 36 V and VCC exceeds the input common-mode voltage by ≥1.5 V. Input overdrive tolerance, rail-to-rail input capability (with clamp protection), and guaranteed performance up to 125°C ambient make it suitable for harsh automotive signal conditioning tasks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports wide battery-supply variation in 12 V/24 V automotive systems without regulation. |
| Input Offset Voltage (typ) | ±0.37 mV - enables precise threshold detection in safety-critical voltage monitoring (e.g., battery cell balancing). |
| Input Bias Current (typ) | 3.5 nA - minimizes error in high-impedance sensor interface circuits (e.g., thermistor or potentiometer-based references). |
| Propagation Delay (typ) | 1 µs - ensures timely response in overvoltage/undervoltage lockout (OVLO/UVLO) and fault-detection circuits. |
| Quiescent Current (max) | 800 µA at 36 V and –40°C to +125°C - maintains low power draw in always-on vehicle subsystems. |
| ESD Rating (HBM) | 2 kV - meets AEC-Q100 H1C classification for robustness against handling and board-level electrostatic events. |
| Operating Temperature | –40°C to +125°C ambient - certified for Grade 1 automotive use in engine bay and cabin electronics. |
Pinout & Package
LM2903BWDSGRQ1 is packaged in an 8-pin WSON (DSG) package measuring 2.00 mm × 2.00 mm with exposed thermal pad. The pad must be connected directly to GND for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-drain NPN collector - requires external pull-up; sinks current when IN+ < IN– + VIO. |
| 1IN− | Comparator 1 inverting input | Negative input node of first comparator - accepts voltages from GND to VCC − 2 V. |
| 1IN+ | Comparator 1 non-inverting input | Positive input node of first comparator - supports same common-mode range as 1IN−. |
| GND | Ground reference | Primary return path for supply and signals; thermal pad must be soldered to this net. |
| 2IN+ | Comparator 2 non-inverting input | Positive input node of second comparator - electrically isolated but shares supply and GND. |
| 2IN− | Comparator 2 inverting input | Negative input node of second comparator - identical electrical behavior to 1IN−. |
| 2OUT | Comparator 2 output | Independent open-drain output - enables separate logic-level translation or parallel fault aggregation. |
| VCC | Positive supply | Single positive rail input - no negative supply required; supports operation up to 36 V. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation with full production test coverage per automotive reliability standards. |
| Input common-mode range includes ground | Enables direct sensing of 0 V referenced signals (e.g., battery negative rail monitoring) without level-shifting circuitry. |
| Differential input voltage range ±36 V | Allows safe comparison of signals exceeding supply rails - critical for detecting transients or reverse-battery conditions. |
| Low input offset drift over temperature | ±5 mV max over full temperature range - ensures stable trip points in thermal-varying environments like powertrain ECUs. |
| Functional Safety documentation support | TI provides FIT rate data, failure mode analysis, and diagnostic coverage guidance for ISO 26262 ASIL-B integration. |
Applications
| HEV/EV Battery Supervision | Body Control Module (BCM) Voltage Monitoring |
|---|---|
Use Scenario: Real-time detection of cell overvoltage or pack undervoltage in 400 V traction battery systems using resistive divider networks. IC Role / Device Role / Timing Role: Dual comparator performs independent high-side and low-side threshold comparisons with open-drain outputs tied to MCU interrupt pins. Use Value: ±0.37 mV offset and 1 µs response enable sub-10 ms fault response time while rejecting noise from high-power inverters. |
Use Scenario: Monitoring 12 V supply stability across door modules, lighting controllers, and HVAC actuators during cold cranking. IC Role / Device Role / Timing Role: One comparator detects <2.5 V (UVLO), the other >14.5 V (OVLO); outputs drive latchable fault flags. Use Value: 2 V to 36 V supply range accommodates cranking dips and load-dump spikes without auxiliary regulation. |
| Infotainment Display Backlight Control | Automotive Sensor Signal Conditioning |
Use Scenario: Comparing ambient light sensor output against programmable thresholds to auto-adjust LCD backlight intensity. IC Role / Device Role / Timing Role: Comparator interfaces analog photodiode signal to PWM controller; open-drain output drives enable pin of LED driver IC. Use Value: 3.5 nA input bias current prevents loading of high-impedance sensor paths, preserving accuracy across temperature. |
Use Scenario: Converting slow-moving analog signals from pressure or position sensors into clean digital edges for microcontroller capture. IC Role / Device Role / Timing Role: Dual comparator provides hysteresis-enabled window detection or zero-crossing detection on differential sensor outputs. Use Value: Rail-to-ground input range and ±36 V differential tolerance allow direct connection to unconditioned sensor bridges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual open-drain comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2903QDRQ1 | SOIC-8 package (4.90 mm × 3.91 mm); higher RθJA (154°C/W); ±4 mV max offset voltage over temp. | Less space-constrained designs; lower thermal performance limits continuous high-current sinking. | Select when PCB layout allows larger footprint and cost sensitivity outweighs precision or thermal needs. |
| TLV1702QDRQ1 | Rail-to-rail input; 0.9 V to 36 V supply; 0.35 mV max offset; 1.2 µs propagation delay; push-pull output option. | Requires no pull-up resistor; supports lower supply voltages; not qualified for Grade 1 extended temp range. | Prefer for new designs needing rail-to-rail input or sub-2 V operation, but verify functional safety compliance separately. |
Compared with LM2903QDRQ1 and TLV1702QDRQ1, the LM2903BWDSGRQ1 delivers superior offset voltage precision and AEC-Q100 Grade 1 thermal certification in a space-saving WSON package-making it optimal for compact, high-reliability automotive modules where consistent trip-point accuracy across temperature is mandatory.
Availability
LM2903BWDSGRQ1 is available at Aetrix Electronics and suitable for HEV/EV battery management, automotive body control modules, and infotainment display systems requiring stable component supply under AEC-Q100 compliance and long-term automotive lifecycle support.
Supply support for LM2903BWDSGRQ1 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, with deep expertise in automotive electronics and functional safety design.
The LM2903-Q1 family was developed specifically for automotive voltage comparison tasks-emphasizing ruggedness, wide supply operation, and AEC-Q100 qualification to replace legacy comparators in safety-critical subsystems.
FAQ
What is the maximum supply voltage rating for LM2903BWDSGRQ1?
The LM2903BWDSGRQ1 supports a maximum supply voltage of 36 V, verified per absolute maximum ratings in the official datasheet (SLCS141M). This rating applies across the full operating temperature range (–40°C to +125°C) and enables direct integration into 24 V commercial vehicle systems and 48 V mild-hybrid architectures without external regulation.
Does LM2903BWDSGRQ1 support operation with inputs at ground potential?
Yes, LM2903BWDSGRQ1 explicitly supports common-mode input voltages down to ground (0 V), as confirmed in Section 2.9 of the datasheet. Its input stage allows both IN+ and IN– pins to operate at GND while maintaining valid output states-critical for battery-negative-referenced sensing in automotive applications.
Is LM2903BWDSGRQ1 pin-compatible with standard LM2903-Q1 variants?
No-LM2903BWDSGRQ1 uses the 8-pin WSON (DSG) package with exposed thermal pad, whereas standard LM2903-Q1 parts commonly use SOIC-8, TSSOP-8, or VSSOP-8. Pin numbering matches the DSG footprint (per Figure 1-2), but physical dimensions, thermal pad requirements, and soldering profiles differ significantly from leaded packages.
What is the typical quiescent current of LM2903BWDSGRQ1 at 12 V supply?
At 12 V supply and 25°C, the LM2903BWDSGRQ1 draws 400–600 µA total quiescent current (Section 2.9, IQ parameter). At full temperature range (–40°C to +125°C) and 36 V, it remains ≤800 µA-ensuring minimal impact on always-on vehicle subsystems such as telematics or gateway ECUs.
Can LM2903BWDSGRQ1 outputs be wire-OR'd together?
Yes-the LM2903BWDSGRQ1 features two independent open-drain outputs that can be externally connected to a shared pull-up resistor. This wired-AND configuration is explicitly supported and used in fault-aggregation circuits (e.g., combining multiple overtemperature alerts into a single MCU interrupt line) without risk of contention or damage.
LM2903BWDSGRQ1 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 (±):
- 2V ~ 36V
- :
- 2.5mV @ 5V
- Voltage - Input Offset (Max):
- 0.003µA @ 5V
- Current - Input Bias (Max):
- 21mA @ 5V
- Current - Output (Typ):
- 600µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 300ns (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount, Wettable Flank
- :
- 8-WSON (2x2)
LM2903BWDSGRQ1 FAQ
1.How can I place an order for LM2903BWDSGRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2903BWDSGRQ1 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 LM2903BWDSGRQ1 reliable?
The price and inventory of LM2903BWDSGRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2903BWDSGRQ1 is usually 5 days.
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LM2903BWDSGRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2903BWDSGRQ1 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 LM2903BWDSGRQ1?
For technical support, including LM2903BWDSGRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2903BWDSGRQ1 requirements.
6.How does Aetrix verify that LM2903BWDSGRQ1 is sourced from the original manufacturer or authorized distributors?
All LM2903BWDSGRQ1 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 LM2903BWDSGRQ1 meets industry standards.
7.What is the process for return or replacement of LM2903BWDSGRQ1?
All LM2903BWDSGRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM2903BWDSGRQ1, 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 LM2903BWDSGRQ1 part is unused and in its original packaging.
Return procedure for LM2903BWDSGRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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