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Texas Instruments LM2903QPWRRB
- Part No.:
- LM2903QPWRRB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2903QPWRRB.pdf
- Description:
- PROTOTYPE
- Quantity:
- Payment:
- Shipping:
Inventory:1,824
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Product details
Overview
LM2903QPWRRB from Texas Instruments is an AEC-Q100 Grade 1 qualified automotive dual voltage comparator with open-drain outputs, ±0.37 mV typical input offset voltage, 200 µA typical supply current per comparator, and operation from 2 V to 36 V single or dual supplies. It serves as a precision level-shifting and threshold-detection IC in HEV/EV powertrain monitoring circuits.
For engineers reviewing the LM2903QPWRRB datasheet, LM2903QPWRRB pinout, LM2903QPWRRB application, or LM2903QPWRRB equivalent, this page delivers verified electrical specs, TSSOP-8 package details, automotive-grade thermal and ESD performance (2 kV HBM), and functional alternatives for body control module and infotainment system designs.
Technical Context
The LM2903QPWRRB implements two independent PNP Darlington-pair input comparators enabling high gain (>200 V/mV), rail-to-rail common-mode input range down to ground, and differential input tolerance up to ±38 V. Its open-drain NPN output stage supports wired-AND logic and flexible pull-up voltage selection up to 36 V.
Designed for automotive environments, it operates across –40°C to +125°C ambient, features dedicated ESD protection on all pins (2 kV HBM / 1 kV CDM), and includes internal clamping to force low output when inputs exceed VCM limits - critical for robustness in noisy vehicle electrical systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports direct connection to 12 V/24 V battery rails and wide-input industrial supplies without regulation |
| Input Offset Voltage (typ) | ±0.37 mV - enables accurate threshold detection at sub-millivolt levels in battery voltage monitoring |
| Supply Current (per comp) | 200 µA typical at 5 V - ensures ultra-low power consumption in always-on vehicle subsystems |
| Input Bias Current (typ) | 3.5 nA - minimizes loading error on high-impedance sensor reference dividers |
| Propagation Delay (typ) | 300 ns (TTL input) - provides fast response for overvoltage/undervoltage fault detection in real time |
| ESD Rating (HBM) | 2 kV - exceeds AEC-Q100 H1C requirement for reliable operation in assembly and field environments |
| Common-Mode Input Range | Includes ground to (V+) – 2.0 V - allows direct sensing of signals referenced to chassis ground |
Pinout & Package
TSSOP-8 package (3.00 mm × 4.40 mm), thermally enhanced with exposed pad connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-drain NPN sink - requires external pull-up; enables level shifting and wired-AND bus interfacing |
| 1IN− | Inverting input, Comp 1 | Darlington-pair input node - high impedance (3.5 nA bias), supports ground-referenced sensing |
| 1IN+ | Non-inverting input, Comp 1 | Darlington-pair input node - accepts voltages up to V+ without damage |
| GND | Ground reference | Primary return path; thermal pad must be soldered directly to PCB ground plane |
| 2IN+ | Non-inverting input, Comp 2 | Independent high-impedance input - usable for dual-threshold or window-comparator configurations |
| 2IN− | Inverting input, Comp 2 | Independent high-impedance input - supports differential sensing or reference comparison |
| 2OUT | Comparator 2 output | Open-drain NPN sink - electrically isolated from 1OUT; enables independent logic-level translation |
| VCC | Positive supply | Accepts 2–36 V - powers both comparators and internal bias circuitry; no separate V− required |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation in automotive powertrain and body electronics |
| Open-drain outputs | Enable interface to mixed-voltage logic (e.g., 3.3 V MCU with 12 V supply rail) via external pull-up |
| Input common-mode range includes ground | Allows direct sensing of 0 V–referenced battery or sensor signals without level-shifting circuitry |
| 2 kV HBM ESD protection | Eliminates need for external TVS diodes in board-level ESD protection schemes |
| Differential input voltage range ±38 V | Withstands transient spikes beyond battery rail during load dump or jump-start events |
Applications
| HEV/EV Battery Monitoring | Infotainment System Power Sequencing |
|---|---|
Use Scenario: Detecting cell imbalance or overvoltage in 400 V traction battery packs using resistive divider networks. IC Role / Device Role / Timing Role: Dual comparator performs simultaneous high-side and low-side voltage window checking with <300 ns response. Use Value: Enables fail-safe shutdown before thermal runaway; ±0.37 mV offset ensures ≤10 mV total error at 5 V reference. | Use Scenario: Controlling power-up sequence of display, audio processor, and CAN transceiver modules in digital clusters. IC Role / Device Role / Timing Role: LM2903QPWRRB compares enable-rail voltages against precision references to generate staggered reset signals. Use Value: Open-drain outputs drive multiple downstream enable pins with shared pull-up; 200 µA quiescent current avoids parasitic drain on backup battery. |
| Body Control Module (BCM) Load Detection | Automotive HVAC Blower Control |
Use Scenario: Monitoring current-sense resistor voltage to detect open-circuit or short-circuit faults in door lock actuators. IC Role / Device Role / Timing Role: One comparator detects overcurrent (via shunt voltage > threshold); second validates supply presence. Use Value: Dual integration eliminates need for discrete comparators; 3.5 nA input bias prevents measurement error on µA-level sense currents. | Use Scenario: Comparing PWM-derived average voltage against temperature-compensated thresholds to regulate blower motor speed. IC Role / Device Role / Timing Role: LM2903QPWRRB acts as analog hysteresis controller feeding gate driver enable logic. Use Value: Wide 2–36 V supply range accommodates variable 12 V battery voltage; ±38 V differential rating survives ignition noise transients. |
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); 1 kV HBM ESD rating; ±4 mV max offset over temp | Larger footprint; lower ESD robustness; higher offset drift in extended temperature cycling | Preferred for legacy PCBs with SOIC land patterns or cost-sensitive non-safety-critical modules |
| TLV1702QDRQ1 | Rail-to-rail input; 0.9 V to 36 V supply; 380 µA IQ; 1.2 µs propagation delay; 1.5 mV offset | Higher precision input stage but slower response; not drop-in due to different pinout and supply behavior | Selected when rail-to-rail input common-mode range is mandatory and response time >1 µs is acceptable |
Compared with LM2903QDRQ1, LM2903QPWRRB offers tighter offset and superior ESD immunity in a smaller TSSOP package; versus TLV1702QDRQ1, it trades input flexibility for faster fault detection and proven AEC-Q100 reliability in high-noise powertrain domains.
Availability
LM2903QPWRRB is available at Aetrix Electronics and suitable for HEV/EV battery management, automotive infotainment power sequencing, and body control module designs requiring stable component supply under AEC-Q100 compliance.
Supply support for LM2903QPWRRB 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-grade product development and manufacturing expertise.
The LM2903-Q1 family was engineered specifically for automotive subsystems demanding high-voltage tolerance, wide temperature operation, and functional safety readiness - including powertrain, chassis, and cockpit electronics.
FAQ
What is the maximum supply voltage rating for LM2903QPWRRB?
The LM2903QPWRRB supports a maximum supply voltage of 36 V under recommended operating conditions. Absolute maximum rating is 38 V for differential supply (V+ − V−), but sustained operation above 36 V risks parametric degradation. This rating enables direct interface with 24 V commercial vehicle systems and 12 V automotive batteries under load-dump conditions.
Does LM2903QPWRRB require a negative supply rail?
No, LM2903QPWRRB operates from a single positive supply (2 V to 36 V) with ground reference. Its input common-mode range includes ground, and outputs are open-drain - eliminating need for dual supplies. The device functions correctly with V− tied to GND, making it ideal for cost-sensitive automotive applications where negative rails are unavailable.
How does the open-drain output of LM2903QPWRRB interface with a 3.3 V microcontroller?
The LM2903QPWRRB open-drain output interfaces with a 3.3 V microcontroller by connecting an external pull-up resistor from the output pin (e.g., 1OUT) to the MCU's 3.3 V I/O rail. When the comparator asserts low, it sinks current to GND; when inactive, the pull-up defines the logic-high level. This configuration ensures voltage-level compatibility without level-shifters.
Is LM2903QPWRRB pin-compatible with standard LM2903 variants?
LM2903QPWRRB uses the industry-standard TSSOP-8 pinout (1OUT, 1IN−, 1IN+, GND, 2IN+, 2IN−, 2OUT, VCC), matching LM2903QDRQ1 (SOIC-8) and LM2903QPWR (non-Q1 TSSOP-8) in signal assignment. Mechanical compatibility is limited to TSSOP-8 footprints; SOIC variants require PCB redesign despite identical pin function mapping.
What automotive temperature grade applies to LM2903QPWRRB?
LM2903QPWRRB is AEC-Q100 Grade 1 qualified, rated for ambient operating temperatures from –40°C to +125°C. This grade covers most engine bay, cabin, and chassis-mounted applications excluding extreme under-hood locations reserved for Grade 0 (–40°C to +150°C). Full qualification documentation is available from Texas Instruments for functional safety system integration.
LM2903QPWRRB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Open-Collector, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2V ~ 30V, ±1V ~ 15V
- :
- 7mV @ 30V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 6mA @ 5V
- Current - Output (Typ):
- 1mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 1µs (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-TSSOP
LM2903QPWRRB FAQ
1.How can I place an order for LM2903QPWRRB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2903QPWRRB 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 LM2903QPWRRB reliable?
The price and inventory of LM2903QPWRRB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2903QPWRRB is usually 5 days.
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4.How is shipping managed for LM2903QPWRRB?
LM2903QPWRRB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2903QPWRRB 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 LM2903QPWRRB?
For technical support, including LM2903QPWRRB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2903QPWRRB requirements.
6.How does Aetrix verify that LM2903QPWRRB is sourced from the original manufacturer or authorized distributors?
All LM2903QPWRRB 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 LM2903QPWRRB meets industry standards.
7.What is the process for return or replacement of LM2903QPWRRB?
All LM2903QPWRRB units undergo pre-shipment inspection (PSI). If there is an issue with LM2903QPWRRB, 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 LM2903QPWRRB part is unused and in its original packaging.
Return procedure for LM2903QPWRRB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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