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Texas Instruments LM2903AVQPWRDL
- Part No.:
- LM2903AVQPWRDL
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2903AVQPWRDL.pdf
- Description:
- PROTOTYPE
- Quantity:
- Payment:
- Shipping:
Inventory:1,494
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Product details
Overview
LM2903AVQPWRDL from Texas Instruments is an AEC-Q100 Grade 1 qualified dual open-drain comparator designed for automotive voltage monitoring and level-shifting applications. It operates from 2 V to 32 V supply, delivers ±0.37 mV typical input offset voltage, 3.5 nA typical input bias current, and 1 µs typical propagation delay across –40°C to +125°C ambient temperature.
For engineers reviewing the LM2903AVQPWRDL datasheet, LM2903AVQPWRDL pinout, LM2903AVQPWRDL application, or LM2903AVQPWRDL equivalent, this page provides verified technical context, validated pin functions, confirmed automotive-grade operating limits, and real-world functional alternatives for HEV/EV powertrain and body control module designs.
Technical Context
The LM2903AVQPWRDL implements a PNP Darlington-pair input stage enabling rail-to-rail common-mode operation down to ground and up to VCC–1.5 V, with internal clamping (Q15) ensuring valid output when inputs exceed VCM. Its open-drain NPN output supports TTL/MOS/CMOS logic interfacing via external pull-up and enables wired-AND functionality.
It uses single-supply operation only (VCC = 2–32 V), supports differential input voltages up to ±36 V, and maintains stable performance under automotive thermal stress with guaranteed operation at –40°C to +125°C ambient - matching AEC-Q100 Grade 1 requirements without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 32 V - supports direct connection to 12 V/24 V automotive batteries and 3.3 V/5 V logic rails without regulation |
| Input Offset Voltage (typ) | ±0.37 mV - enables precise threshold detection in battery voltage monitoring and overvoltage protection circuits |
| Input Bias Current (typ) | 3.5 nA - minimizes loading error on high-impedance sensor reference dividers and thermistor networks |
| Propagation Delay (typ) | 1 µs - ensures timely response in motor phase fault detection and window comparator timing-critical applications |
| Common-Mode Input Range | Ground to VCC–1.5 V - allows direct sensing of signals referenced to chassis ground in automotive systems |
| ESD Rating (HBM) | 2 kV - meets AEC-Q100-002 Class H1C for robustness against assembly and in-vehicle electrostatic events |
| Output Type | Open-drain NPN - permits flexible logic-level translation and wired-AND bus configurations with external pull-up |
Pinout & Package
Packaged in TSSOP-8 (3.00 mm × 4.40 mm), LM2903AVQPWRDL features a surface-mount footprint optimized for automotive PCB space constraints and thermal reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-drain NPN collector - requires external pull-up to define logic-high level and sink current during active-low assertion |
| 1IN− | Comparator 1 inverting input | Negative input node of first comparator - accepts signals up to VCC–1.5 V; clamped to prevent damage beyond VCM range |
| 1IN+ | Comparator 1 non-inverting input | Positive input node of first comparator - supports input voltages exceeding VCC without damage |
| GND | Ground reference | Common return path for supply, inputs, and output pull-up - must be low-impedance for noise immunity |
| 2IN+ | Comparator 2 non-inverting input | Positive input node of second comparator - electrically isolated but shares same VCC/GND domain |
| 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 dual-threshold detection or redundant comparison paths |
| VCC | Positive supply | Single supply pin - powers both comparators; no dual-supply configuration supported for this variant |
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 |
| Low input offset voltage | ±0.37 mV typical ensures accurate voltage window detection in battery management and sensor signal conditioning |
| Wide supply range (2–32 V) | Eliminates need for dedicated LDOs when interfacing with 12 V/24 V vehicle buses and 3.3 V microcontrollers |
| Open-drain outputs | Enable level-shifting between disparate logic families and wired-AND bus architectures for fault signaling |
| Input common-mode range to ground | Supports direct sensing of chassis-referenced signals without level-shifting circuitry |
Applications
| Overvoltage Protection Circuit | Battery State-of-Charge Monitor |
|---|---|
Use Scenario: Detecting battery voltage exceeding 14.8 V in 12 V automotive systems to trigger charge controller shutdown. IC Role / Device Role / Timing Role: Dual comparator configured as window detector - one channel monitors upper threshold, second validates lower bound to reject noise-induced false trips. Use Value: ±0.37 mV offset and 1 µs response ensure reliable trip within 100 µs of overvoltage event while rejecting transients below 50 mV. | Use Scenario: Estimating remaining capacity by comparing measured cell voltage against calibrated reference thresholds. IC Role / Device Role / Timing Role: Precision voltage comparator with rail-to-ground input range - directly interfaces with battery sense resistors and reference dividers without signal conditioning. Use Value: 3.5 nA input bias current prevents loading errors on high-value resistor networks used in low-power SoC monitoring. |
| Motor Phase Fault Detector | Infotainment Power Sequencing |
Use Scenario: Monitoring back-EMF zero-crossing in BLDC motor commutation to detect stalled rotor or winding short. IC Role / Device Role / Timing Role: High-speed dual comparator with 32 V tolerance - compares phase voltage against mid-rail reference to identify abnormal voltage imbalance. Use Value: 2 kV HBM ESD rating withstands motor drive switching noise; 1 µs propagation delay enables sub-millisecond fault response. | Use Scenario: Controlling power-up sequence of display, audio processor, and MCU subsystems in automotive head units. IC Role / Device Role / Timing Role: Dual threshold detector - first comparator validates main 5 V rail, second verifies 3.3 V logic rail before enabling downstream regulators. Use Value: Open-drain outputs allow shared pull-up to enable cascaded enable signals with automatic OR logic for fault-safe sequencing. |
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 |
|---|---|---|---|
| LM2903BQDR | Same LM2903B-Q1 core, SOIC-8 package, 2–36 V supply range, ±4 mV max offset over temp | SOIC-8 footprint requires PCB redesign; higher max offset impacts precision thresholding | Select when board space allows SOIC and wider supply (up to 36 V) is needed |
| TLV1702QDRQ1 | Rail-to-rail input, 1.8–36 V supply, 0.85 mV max offset, 1.2 µs propagation delay, push-pull output | Push-pull output eliminates external pull-up; rail-to-rail input extends dynamic range beyond VCC–1.5 V | Select when faster settling, lower offset drift, or simplified output interface is required |
Compared with LM2903BQDR, LM2903AVQPWRDL offers tighter offset and TSSOP packaging for space-constrained modules; compared with TLV1702QDRQ1, it trades rail-to-rail input and push-pull output for proven AEC-Q100 stability and lower cost in established automotive platforms.
Availability
LM2903AVQPWRDL is available at Aetrix Electronics and suitable for automotive HEV/EV powertrain control, infotainment system power sequencing, and body control module voltage supervision requiring stable component supply across extended production lifecycles.
Supply support for LM2903AVQPWRDL 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 family was engineered specifically for AEC-Q100-compliant automotive subsystems - emphasizing long-term reliability, wide-temperature operation, and compatibility with legacy 12 V/24 V vehicle architectures.
FAQ
What is the maximum supply voltage for LM2903AVQPWRDL?
The LM2903AVQPWRDL supports a maximum supply voltage of 32 V, as specified for V-suffix devices in the LM2903-Q1 family. This rating applies across the full –40°C to +125°C operating temperature range and enables direct interface with 24 V automotive systems without external regulation. Exceeding 32 V risks permanent damage per absolute maximum ratings.
Does LM2903AVQPWRDL support dual-supply operation?
No, LM2903AVQPWRDL does not support true dual-supply operation. It is designed for single-supply use with VCC referenced to GND. While the differential input voltage can reach ±36 V, the device requires only one positive supply rail and ground - consistent with its AEC-Q100 Grade 1 qualification and automotive voltage monitoring role.
What is the input common-mode voltage range of LM2903AVQPWRDL?
The input common-mode voltage range for LM2903AVQPWRDL extends from ground to VCC–1.5 V for the inverting input, while the non-inverting input tolerates voltages exceeding VCC. This architecture enables direct sensing of chassis-ground-referenced signals in automotive applications and eliminates the need for level-shifting circuitry in most voltage-monitoring use cases.
How does the open-drain output of LM2903AVQPWRDL function in practice?
The LM2903AVQPWRDL features two independent open-drain NPN outputs that sink current when asserted. Each output requires an external pull-up resistor to define the logic-high voltage level - enabling interoperability with 3.3 V, 5 V, or 12 V logic families. This configuration also supports wired-AND bus topologies where multiple comparators share a single interrupt line.
Is LM2903AVQPWRDL pin-compatible with standard LM2903 variants?
Yes, LM2903AVQPWRDL is pin-compatible with other TSSOP-8 packaged LM2903-Q1 family members, including LM2903QDR and LM2903BQDR. All share identical pin numbering (1OUT, 1IN−, 1IN+, GND, 2IN+, 2IN−, 2OUT, VCC), allowing drop-in replacement in existing layouts - provided the 32 V supply limit and V-suffix characteristics align with system requirements.
LM2903AVQPWRDL 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 ~ 32V, ±1V ~ 16V
- :
- 2mV @ 30V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 20mA
- 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
LM2903AVQPWRDL FAQ
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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 LM2903AVQPWRDL?
For technical support, including LM2903AVQPWRDL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2903AVQPWRDL requirements.
6.How does Aetrix verify that LM2903AVQPWRDL is sourced from the original manufacturer or authorized distributors?
All LM2903AVQPWRDL 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 LM2903AVQPWRDL meets industry standards.
7.What is the process for return or replacement of LM2903AVQPWRDL?
All LM2903AVQPWRDL units undergo pre-shipment inspection (PSI). If there is an issue with LM2903AVQPWRDL, 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 LM2903AVQPWRDL part is unused and in its original packaging.
Return procedure for LM2903AVQPWRDL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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