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Texas Instruments LM2903VQDRG4Q1
- Part No.:
- LM2903VQDRG4Q1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2903VQDRG4Q1.pdf
- Description:
- IC COMPARATOR 2 DIFF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:26,577
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Product details
Overview
LM2903VQDRG4Q1 from Texas Instruments is an AEC-Q100 Grade 1 qualified automotive dual voltage comparator with open-drain outputs, operating from 2 V to 36 V supply, ±0.37 mV typical input offset voltage, 3.5 nA typical input bias current, and 1 µs typical propagation delay. It serves as a precision level-shifting and signal-conditioning element in HEV/EV powertrain monitoring circuits.
For engineers reviewing the LM2903VQDRG4Q1 datasheet, LM2903VQDRG4Q1 pinout, LM2903VQDRG4Q1 application, or LM2903VQDRG4Q1 equivalent, key selection criteria include its Grade 1 temperature range (–40°C to +125°C), 2 kV HBM ESD rating, low quiescent current (600 µA max), open-collector output compatibility with TTL/MOS/CMOS, and validated functional safety documentation support.
Technical Context
The LM2903VQDRG4Q1 implements two independent PNP Darlington-pair input comparators enabling high gain and fast response with minimal input bias current. Its input common-mode range includes ground and extends to VCC – 1.5 V, supporting accurate operation with 3.3 V and 5 V logic supplies.
Each comparator features an open-drain NPN output stage capable of sinking up to 25 mA, with output low voltage scaling resistively with sink current (e.g., 400 mV at 4 mA, 550 mV over full temperature range). The device supports single- or dual-supply operation, provided the supply difference remains within 2 V to 36 V and VCC exceeds the input common-mode voltage by ≥1.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - enables direct interface with 12 V/24 V automotive rails and 3.3 V/5 V logic without level shifters |
| Input Offset Voltage (typ) | ±0.37 mV - ensures high-precision threshold detection in battery voltage monitoring and fault-sensing applications |
| Input Bias Current (typ) | 3.5 nA - minimizes loading on high-impedance sensor sources such as thermistors or potentiometers |
| Propagation Delay (typ) | 1 µs - supports real-time response in overvoltage/undervoltage lockout (OVLO/UVLO) and window comparator circuits |
| Quiescent Current (max) | 800 µA at 36 V and –40°C to +125°C - maintains low system power in always-on vehicle modules |
| ESD Rating (HBM) | 2 kV - meets AEC-Q100 stress requirements for robustness in harsh automotive environments |
| Operating Temperature | –40°C to +125°C (Grade 1) - certified for under-hood and powertrain control unit deployment |
Pinout & Package
LM2903VQDRG4Q1 is packaged in an SOIC-8 (D) package measuring 4.90 mm × 3.91 mm, with standard pinout compatible across LM2903-Q1 family variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-drain NPN collector - requires external pull-up to define logic-high level and enable wired-AND functionality |
| 1IN− | Comparator 1 inverting input | High-impedance PNP Darlington base - accepts signals down to ground with no phase inversion |
| 1IN+ | Comparator 1 non-inverting input | High-impedance PNP Darlington base - supports reference inputs up to VCC − 1.5 V |
| GND | Ground reference | Common return path for both comparators and internal bias circuitry |
| 2IN+ | Comparator 2 non-inverting input | Independent high-impedance input - enables differential sensing or dual-threshold detection |
| 2IN− | Comparator 2 inverting input | Independent high-impedance input - supports inverted logic configurations or hysteresis feedback |
| 2OUT | Comparator 2 output | Open-drain NPN collector - electrically isolated from 1OUT for independent load driving |
| VCC | Positive supply | Single-supply rail powering both comparators - tolerant of transients up to 36 V |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 (–40°C to +125°C ambient), HBM 2 kV / CDM 1 kV - validated for safety-critical body and powertrain systems |
| Wide supply range | 2 V to 36 V operation - eliminates need for dedicated LDOs when interfacing with 12 V/24 V battery domains |
| Low input offset voltage | ±0.37 mV typical - reduces false triggering in precision voltage window detectors used in battery cell monitoring |
| Open-drain outputs | Independent NPN sinks per comparator - enables flexible logic-level translation and multi-comparator wired-AND logic |
| Functional safety support | Documentation available for ISO 26262 ASIL-B system integration - simplifies FMEDA and safety analysis for automotive OEMs |
Applications
| Overvoltage Protection Circuit | Battery Cell Voltage Monitoring |
|---|---|
Use Scenario: Detecting battery pack overvoltage during charging to trigger disconnect relays or reduce charge current. IC Role / Device Role / Timing Role: Dual comparator configured as window detector comparing cell voltage against upper and lower thresholds. Use Value: ±0.37 mV offset and 1 µs response ensure rapid, precise trip points without false positives from noise or drift. | Use Scenario: Monitoring individual Li-ion cell voltages in EV battery management systems (BMS) for balancing and SOC estimation. IC Role / Device Role / Timing Role: Precision comparator comparing each cell's voltage to a stable reference via high-impedance inputs. Use Value: 3.5 nA input bias current prevents loading of high-resistance voltage dividers, preserving measurement accuracy. |
| Engine Coolant Temperature Threshold Detection | Infotainment System Power Sequencing |
Use Scenario: Activating cooling fan or warning light when engine coolant exceeds safe operating temperature. IC Role / Device Role / Timing Role: Single comparator comparing thermistor-derived analog voltage to fixed reference. Use Value: Ground-sensing input capability allows direct connection to thermistor networks referenced to chassis ground. | Use Scenario: Controlling power-up sequence of display, audio, and connectivity ICs in automotive infotainment head units. IC Role / Device Role / Timing Role: Dual comparator generating timed enable signals based on rail voltage stabilization. Use Value: 2 V to 36 V supply range permits direct monitoring of 5 V, 3.3 V, and 12 V rails without auxiliary regulators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2903QPWRQ1 | TSSOP-8 package (3.00 mm × 4.40 mm); identical electrical specs and Grade 1 qualification | Smaller footprint and improved thermal resistance (RθJA = 182.9°C/W vs. 154.1°C/W) - preferred for space-constrained PCB layouts | Select when board area is constrained and thermal performance must be optimized without changing circuit design. |
| LM2903BQDRQ1 | Same SOIC-8 package; improved 2 kV HBM ESD rating (vs. 1 kV for legacy Q1), lower offset voltage (±0.37 mV vs. ±4 mV max), and lower supply current (600 µA vs. 1 mA typ) | Enhanced robustness and precision for new designs requiring tighter tolerances and higher reliability in harsh environments | Choose for next-generation automotive modules where long-term stability and ESD immunity are critical. |
Compared with LM2903QPWRQ1, LM2903VQDRG4Q1 offers better thermal dissipation in SOIC-8 but larger footprint; compared with LM2903BQDRQ1, it shares identical package and pinout but trades slightly higher offset tolerance for proven field reliability in established platforms.
Availability
LM2903VQDRG4Q1 is available at Aetrix Electronics and suitable for automotive powertrain control, battery management, and infotainment system designs requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for LM2903VQDRG4Q1 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 automotive, industrial, and personal electronics markets.
The LM2903-Q1 product line delivers AEC-Q100-qualified dual comparators optimized for automotive subsystems requiring wide supply range, ground-sensing capability, and functional safety documentation support.
FAQ
What is the maximum supply voltage rating for LM2903VQDRG4Q1?
The LM2903VQDRG4Q1 supports a maximum supply voltage of 36 V, verified per absolute maximum ratings in the official TI datasheet SLCS141M. This rating applies across the full operating temperature range (–40°C to +125°C) and enables direct use with 24 V automotive battery systems without external regulation. Exceeding 36 V risks permanent damage.
Does LM2903VQDRG4Q1 support dual-supply operation?
Yes, LM2903VQDRG4Q1 supports dual-supply operation provided the difference between V+ and V– remains within 2 V to 36 V, and V+ is at least 1.5 V more positive than the input common-mode voltage. This configuration is explicitly validated in TI's recommended operating conditions and enables bipolar signal comparison in sensor interfaces.
What is the input common-mode voltage range of LM2903VQDRG4Q1?
The input common-mode voltage range of LM2903VQDRG4Q1 spans from ground to VCC – 1.5 V at 25°C, and to VCC – 2.0 V over the full –40°C to +125°C range. This ground-inclusive range allows direct interfacing with sensors and references tied to chassis ground, a critical requirement in automotive body electronics.
Is LM2903VQDRG4Q1 pin-compatible with standard LM2903 variants?
Yes, LM2903VQDRG4Q1 uses the industry-standard SOIC-8 pinout defined for the LM2903-Q1 family, matching pin functions and locations with LM2903QPWRQ1 (TSSOP-8), LM2903BQDRQ1 (SOIC-8), and legacy LM2903QDRQ1. No PCB layout changes are required when substituting within the same package type.
What functional safety documentation is available for LM2903VQDRG4Q1?
Texas Instruments provides functional safety documentation for LM2903VQDRG4Q1 including FIT rate data, failure mode analysis, and safety manual excerpts to support ISO 26262 ASIL-B system development. These materials are accessible via TI's product folder and are specifically validated for the LM2903-Q1 and LM2903B-Q1 families.
LM2903VQDRG4Q1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-SOIC
LM2903VQDRG4Q1 FAQ
1.How can I place an order for LM2903VQDRG4Q1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2903VQDRG4Q1 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 LM2903VQDRG4Q1 reliable?
The price and inventory of LM2903VQDRG4Q1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2903VQDRG4Q1 is usually 5 days.
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LM2903VQDRG4Q1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2903VQDRG4Q1 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 LM2903VQDRG4Q1?
For technical support, including LM2903VQDRG4Q1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2903VQDRG4Q1 requirements.
6.How does Aetrix verify that LM2903VQDRG4Q1 is sourced from the original manufacturer or authorized distributors?
All LM2903VQDRG4Q1 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 LM2903VQDRG4Q1 meets industry standards.
7.What is the process for return or replacement of LM2903VQDRG4Q1?
All LM2903VQDRG4Q1 units undergo pre-shipment inspection (PSI). If there is an issue with LM2903VQDRG4Q1, 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 LM2903VQDRG4Q1 part is unused and in its original packaging.
Return procedure for LM2903VQDRG4Q1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2903VQDRG4Q1 Tags
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