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Texas Instruments LM2903QPWRG4Q1
- Part No.:
- LM2903QPWRG4Q1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2903QPWRG4Q1.pdf
- Description:
- IC COMPARATOR 2 DIFF 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:14,286
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Product details
Overview
LM2903QPWRG4Q1 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 enables precise voltage monitoring in HEV/EV powertrain control and body electronics.
For engineers reviewing the LM2903QPWRG4Q1 datasheet, LM2903QPWRG4Q1 pinout, LM2903QPWRG4Q1 application, or LM2903QPWRG4Q1 equivalent, key selection criteria include automotive-grade temperature range (–40°C to +125°C), open-drain output compatibility with TTL/MOS/CMOS, low quiescent current (600 µA max), and robust ESD rating (2 kV HBM).
Technical Context
The LM2903QPWRG4Q1 implements a PNP Darlington-pair input stage enabling high gain, fast response, and operation down to ground common-mode voltage while maintaining VCM up to VCC – 2 V over temperature. Its open-drain NPN output stage supports wired-AND logic and flexible pull-up configuration across multiple voltage domains.
It operates on single or split supplies (VS = V+ – V–) within 2 V to 36 V, with differential input voltage tolerance of ±38 V and input pins rated to –0.3 V to 38 V - enabling direct interface with high-side sensing and battery-monitoring circuits without external protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports wide automotive battery transients and 12 V/24 V/48 V system rails without regulation. |
| Input Offset Voltage (typ) | ±0.37 mV - enables accurate threshold detection in precision window comparators and battery cell monitoring. |
| Input Bias Current (typ) | 3.5 nA - minimizes error in high-impedance sensor interfaces (e.g., thermistors, potentiometers). |
| Propagation Delay (typ) | 1 µs at 5 V supply - suitable for real-time fault detection in motor control and DC-DC converter feedback loops. |
| Quiescent Current (max) | 800 µA at 36 V and –40°C to +125°C - ensures low-power operation in always-on vehicle modules. |
| ESD Rating (HBM) | 2 kV - exceeds AEC-Q100 Class H1C requirement, reducing field failure risk in assembly and service environments. |
| Common-Mode Input Range | Ground to VCC – 2 V - allows direct sensing of signals referenced to chassis ground in automotive subsystems. |
Pinout & Package
TSSOP-8 package (3.00 mm × 4.40 mm), surface-mount, lead-free, RoHS-compliant, with exposed thermal pad connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-drain NPN - requires external pull-up; enables level-shifting and wired-AND logic with other comparators or MCUs. |
| 1IN− | Comparator 1 inverting input | Differential sensing node - accepts voltages from –0.3 V to 38 V; compatible with high-side current-sense amplifiers. |
| 1IN+ | Comparator 1 non-inverting input | Reference or signal input - supports rail-to-rail common-mode range including ground, critical for battery voltage monitoring. |
| GND | Ground reference | Primary return path for inputs, outputs, and thermal pad - must be low-impedance connection to minimize noise coupling. |
| VCC | Positive supply | Single-supply input (2–36 V) - powers both comparators and internal bias circuitry; tolerant of load-dump transients. |
| 2OUT | Comparator 2 output | Independent open-drain output - allows dual-threshold detection (e.g., overvoltage + undervoltage) with shared pull-up. |
| 2IN− | Comparator 2 inverting input | Second differential input - enables independent comparison of two separate analog signals (e.g., temperature vs. threshold). |
| 2IN+ | Comparator 2 non-inverting input | Second reference input - supports dual-channel monitoring without external multiplexing or additional ICs. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets functional safety requirements for powertrain and body control modules. |
| Open-drain output architecture | Enables flexible logic-level translation and wired-AND bus configurations - eliminates need for external logic gates in fault-signaling networks. |
| Low input offset drift | ±4 mV max over full temperature range - ensures stable trip points across vehicle cabin and under-hood thermal gradients. |
| High differential input voltage rating | ±38 V - permits direct connection to unregulated battery rails and industrial 24 V control lines without clamping diodes. |
| Tri-Temp tested option available | Production-tested at –40°C, 25°C, and 125°C - guarantees parametric performance across full automotive operating envelope. |
Applications
| HEV/EV Battery Management | Automotive Body Control Module |
|---|---|
Use Scenario: Monitoring individual cell voltages in 400 V traction battery packs to detect overvoltage and undervoltage faults. IC Role / Device Role / Timing Role: Dual comparator performing independent high- and low-threshold comparisons per cell string using resistor-divider networks. Use Value: Enables fast (<1 µs) fault flag generation with <±0.37 mV offset accuracy, improving battery pack safety and longevity. |
Use Scenario: Detecting door-open status via microswitch closure and controlling interior lighting dimming profiles. IC Role / Device Role / Timing Role: Comparator converting mechanical switch state into clean digital logic signal for MCU GPIO input. Use Value: Ground-referenced input capability and 2–36 V supply range allow direct interface with 12 V vehicle power without LDO. |
| Infotainment System Power Sequencing | Engine Control Unit (ECU) Sensor Interface |
Use Scenario: Validating correct ramp-up sequence of multiple supply rails (e.g., 5 V, 3.3 V, 1.8 V) before enabling processor boot. IC Role / Device Role / Timing Role: Dual comparator comparing each rail against precision reference to generate "power-good" flags. Use Value: Low quiescent current (600 µA) and wide supply range reduce standby power overhead in always-on infotainment head units. |
Use Scenario: Converting analog signals from knock sensors and oxygen sensors into digital enable/disable signals for fuel injection timing. IC Role / Device Role / Timing Role: High-speed comparator detecting zero-crossing or amplitude thresholds in noisy engine bay environments. Use Value: 2 kV HBM ESD rating and –40°C to +125°C operation ensure reliability in high-vibration, high-EMI engine compartments. |
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); identical electrical specs but higher RθJA (154°C/W vs. 182.9°C/W for TSSOP) | Better suited for prototyping and manual soldering; less space-efficient for high-density PCBs | Select when board layout allows larger footprint and thermal management uses heatsinking or airflow. |
| TLV1702QDRQ1 | Rail-to-rail input, 36 V supply, but lower offset (±0.8 mV typ), higher IQ (1.2 mA), and no AEC-Q100 Grade 0/1 certification | Not qualified for powertrain use; limited to infotainment or comfort systems where extended temp range not required | Choose only for cost-sensitive non-safety-critical applications where rail-to-rail input is mandatory. |
Compared with LM2903QDRQ1 and TLV1702QDRQ1, the LM2903QPWRG4Q1 delivers optimal balance of AEC-Q100 Grade 1 compliance, ultra-low input bias current, and compact TSSOP-8 packaging - making it the preferred choice for space-constrained, thermally demanding automotive control modules.
Availability
LM2903QPWRG4Q1 is available at Aetrix Electronics and suitable for HEV/EV battery management, automotive body control modules, and infotainment power sequencing requiring stable component supply across long production lifecycles.
Supply support for LM2903QPWRG4Q1 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 specializing in analog and embedded processing technologies, with decades of automotive qualification expertise and broad portfolio of AEC-Q100-compliant components.
The LM2903-Q1 family was designed specifically for automotive voltage monitoring and fault-detection applications, emphasizing robustness, wide supply range, and seamless integration into safety-critical control systems.
FAQ
What is the maximum supply voltage supported by the LM2903QPWRG4Q1?
The LM2903QPWRG4Q1 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 interface with 24 V and 48 V automotive systems without external regulation.
Does the LM2903QPWRG4Q1 have rail-to-rail input capability?
No, the LM2903QPWRG4Q1 does not support rail-to-rail input. Its common-mode input voltage range extends from ground to VCC – 2 V at temperature extremes, as specified in Section 2.5 of the LM2903-Q1 datasheet. The non-inverting input can exceed VCC, but the inverting input is limited to VCC – 2 V maximum.
Is the LM2903QPWRG4Q1 pin-compatible with standard LM2903 variants?
Yes, the LM2903QPWRG4Q1 shares identical pinout and functionality with other LM2903-Q1 family members in TSSOP-8 packaging, including LM2903QTPWRQ1 and LM2903BQPWRQ1. All maintain the same 1OUT, 1IN−, 1IN+, GND, VCC, 2OUT, 2IN−, 2IN+ assignment per Figure 1-1 in the datasheet.
What is the typical input offset voltage of the LM2903QPWRG4Q1 at 25°C?
The LM2903QPWRG4Q1 has a typical input offset voltage of ±0.37 mV at 25°C and VS = 5 V to 36 V, as documented in Section 2.9 Electrical Characteristics of the LM2903B-Q1 datasheet. This value is confirmed for the DGK and PW package variants, which include LM2903QPWRG4Q1.
Can the LM2903QPWRG4Q1 drive a 10 kΩ pull-up resistor to 5 V?
Yes, the LM2903QPWRG4Q1 can reliably sink current through a 10 kΩ pull-up to 5 V. With IOL ≥ 6 mA minimum and VOL ≤ 400 mV at 4 mA sink (Section 2.9), the output voltage remains well below TTL and CMOS logic-low thresholds under this load condition.
LM2903QPWRG4Q1 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 @ 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-TSSOP
LM2903QPWRG4Q1 FAQ
1.How can I place an order for LM2903QPWRG4Q1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2903QPWRG4Q1 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 LM2903QPWRG4Q1 reliable?
The price and inventory of LM2903QPWRG4Q1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2903QPWRG4Q1 is usually 5 days.
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4.How is shipping managed for LM2903QPWRG4Q1?
LM2903QPWRG4Q1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2903QPWRG4Q1 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 LM2903QPWRG4Q1?
For technical support, including LM2903QPWRG4Q1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2903QPWRG4Q1 requirements.
6.How does Aetrix verify that LM2903QPWRG4Q1 is sourced from the original manufacturer or authorized distributors?
All LM2903QPWRG4Q1 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 LM2903QPWRG4Q1 meets industry standards.
7.What is the process for return or replacement of LM2903QPWRG4Q1?
All LM2903QPWRG4Q1 units undergo pre-shipment inspection (PSI). If there is an issue with LM2903QPWRG4Q1, 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 LM2903QPWRG4Q1 part is unused and in its original packaging.
Return procedure for LM2903QPWRG4Q1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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