Texas Instruments LM2903VQPWRG4Q1 – AEC‑Q100 Dual Comparator, 36‑V, 8‑TSSOP
The Texas Instruments LM2903VQPWRG4Q1 is an automotive‑qualified, high‑voltage dual differential comparator tailored for robust sensing and threshold detection in vehicles and industrial systems. Part of the LM2903V‑Q1 family, this device combines wide supply flexibility (single 2–36 V or dual ±1 V to ±18 V), open‑collector outputs for easy level shifting and wired‑OR functions, and a compact, surface‑mount 8‑pin TSSOP package. With AEC‑Q100 qualification and lead‑free G4 finish, it is well‑suited for safety‑critical and long‑lifecycle designs.
This article provides an engineer‑focused overview of the LM2903VQPWRG4Q1, including key specifications, practical design notes, sourcing considerations, compliance, and FAQs—so you can quickly determine fit and accelerate your design and procurement decisions.
Overview
- Manufacturer/Brand: Texas Instruments
- Series: LM2903V‑Q1
- Category: Analog ICs – Comparators
- Function: Dual differential comparator
- Package: 8‑TSSOP (PW), Tape & Reel (TR)
- Mounting Type: Surface Mount
- Pin Count: 8
The LM2903VQPWRG4Q1 belongs to TI’s widely adopted LM2903V‑Q1 automotive series. Its open‑collector outputs enable direct level shifting and wired‑OR connections, simplifying interfaces between high‑voltage domains and standard logic rails (with appropriate pull‑ups). The device supports single‑supply operation from 2 V to 36 V or dual rails of ±1 V to ±18 V, giving designers freedom across 12 V/24 V automotive systems and industrial control nodes.
Note on ordering code: this specific MPN encodes several practical details—PW denotes the TSSOP‑8 package, R indicates tape‑and‑reel, G4 signifies a green (lead‑free) finish, and Q1 identifies automotive qualification. Always confirm the exact ordering options and temperature grade against the product page and datasheet.
Key Features and Benefits
- Wide supply range: 2 V to 36 V (single) or ±1 V to ±18 V (dual) supports diverse power architectures
- Open‑collector outputs: enables level shifting and wired‑OR combining across system domains (requires external pull‑up)
- Input common‑mode includes ground: suitable for low‑side sensing and ground‑referenced thresholds
- Automotive qualified: AEC‑Q100 with Grade 0 and Grade 1 options available (check ordering codes)
- Low power consumption: suitable for battery‑powered and always‑on monitors (specific currents not specified here; see datasheet)
- Compact, robust form factor: 8‑pin TSSOP (PW) package for dense layouts
- Lead‑free, RoHS compliant: G4 finish and RoHS status support environmentally compliant builds
Specifications
Electrical
- Comparator channels: Dual
- Output type: Open‑collector (requires external pull‑up to desired logic/supply level)
- Supply range (single): 2 V to 36 V
- Supply range (dual): ±1 V to ±18 V
- Input common‑mode range: Includes ground
- Low power features: Low supply current (exact figures not specified here)
Mechanical / Package
- Package code: PW (TSSOP‑8)
- Pin count: 8
- Mounting: Surface Mount
- Packaging: Tape & Reel (TR)
- Lead finish: G4 (Green, lead‑free)
Environmental / Qualification
- Automotive qualification: AEC‑Q100
- Operating temperature: −40°C to +125°C or +150°C, grade dependent (Grade 1 vs. Grade 0)
- RoHS status: RoHS Compliant (Lead‑Free)
What’s not specified here
For parameters such as input offset voltage, propagation delay, output sink current, hysteresis characteristics, and input bias currents, refer to the official TI datasheet. These values are application‑critical but are not provided in the data summarized for this article.
Resources:
- Product page: https://www.ti.com/product/LM2903V-Q1
- Datasheet: https://www.ti.com/lit/ds/symlink/lm2903v-q1.pdf
Applications
The Texas Instruments LM2903VQPWRG4Q1 is a versatile dual comparator designed for:
- Automotive sensing and threshold detection (e.g., voltage, current, or temperature thresholds)
- Battery monitoring and power supervision (undervoltage, overvoltage, power‑good indication)
- Sensor interface and signal conditioning (converting slow analog ramps to digital thresholds)
- Industrial control and instrumentation (alarms, window comparators, limit detectors)
Because the outputs are open‑collector, the device can readily translate comparator results into logic‑level signals by pulling up to a microcontroller or transceiver supply rail, provided absolute maximum ratings are observed.
Design and Implementation Notes
Pull‑up resistor selection for open‑collector outputs
- The LM2903VQPWRG4Q1 requires external pull‑up resistors on each comparator output. Choose the resistor to balance speed and power:
- Lower resistance yields faster edges and stronger noise immunity but increases current when the output transistor sinks.
- Higher resistance reduces static current at the expense of edge speed and noise margin.
- A practical selection approach is to start in the mid‑kΩ range and refine using the datasheet’s output sink current capability and your logic‑level targets. Ensure the pull‑up voltage and current remain within the device’s absolute maximum ratings and system budgets.
Level shifting and wired‑OR
- Open‑collector topology simplifies level shifting between the comparator’s supply domain and your logic domain. Pull‑up to the logic rail as needed, as long as it does not exceed the permitted voltage for the output transistor and system limits.
- Multiple comparator outputs can be wire‑ORed by tying their collectors together with a single pull‑up, enabling simple fault aggregation or multi‑threshold signaling. Validate timing, fan‑out, and fail‑safe behavior in your end application.
Input range and biasing
- The input common‑mode range includes ground, enabling low‑side shunt sensing or ground‑referenced thresholds on single‑supply rails.
- When sensing around slowly moving signals or noisy lines, consider adding external hysteresis via positive feedback to mitigate output chatter near the trip point. The datasheet typically provides example circuits for adding hysteresis.
Power and layout practices
- Decouple the supply close to the device with low‑ESR capacitors per TI guidance.
- Route sensitive input traces away from fast digital edges and high current return paths. Use a solid ground reference.
- If using long sensor leads, add RC filtering and ESD protection appropriate to your environment.
Timing and accuracy
- Comparator response time, offset, and bias currents determine threshold precision and latency. These details are application‑specific and not included in this summary—consult the datasheet and verify across your required temperature and voltage ranges.
Lifecycle, Supply, and Sourcing
- Lifecycle status: Active (per Texas Instruments product page)
- Availability: Commonly available through TI and authorized distributors
- Packaging: Tape & Reel (TR) for automated assembly
- Our current on‑hand inventory: 0 units (contact for quote)
- Pricing: Varies by quantity and region; consult TI or authorized channels
Ordering information and code elements
- Base family: LM2903V‑Q1 (automotive)
- This specific MPN: LM2903VQPWRG4Q1
- Known code elements in this device string:
- PW = TSSOP‑8 package
- R = Tape & Reel
- G4 = Green, lead‑free finish
- Q1 = Automotive qualified
Always verify the complete orderable part number on TI’s product page for temperature grade (Grade 0 vs. Grade 1), packing, and any additional options specific to your manufacturing flow.
Replacement and alternates
- Direct replacements: Not specified
- Approved alternates: None listed
- Policy note: Use only after full validation for electrical and functional compatibility in the end application
If you require pin‑compatible or performance‑enhanced alternatives, consult TI’s parametric search or speak with an applications engineer to match offset, speed, current consumption, and temperature grade to your requirements.
Compliance and Environmental
- AEC‑Q100: Automotive qualified; Grade 0 and Grade 1 options available depending on ordering code
- RoHS: Compliant; lead‑free (G4)
- Temperature range: −40°C to +125°C or +150°C (grade dependent)
These attributes support adoption in automotive ECUs, industrial controllers, and other long‑lifecycle, compliance‑sensitive products.
Practical Application Examples
- Battery and power rail supervision: Detect undervoltage on a 12 V or 24 V rail and assert a logic‑level fault via an appropriate pull‑up to the MCU supply.
- Sensor thresholding: Convert an analog transducer output into a clean digital threshold for fault or event detection.
- Window comparators: Use both channels to create a high/low window around a nominal operating point and flag excursions.
- Discrete logic replacement: Implement wired‑OR logic for alarm aggregation from multiple sensors using the open‑collector outputs.
These are representative use cases; tailor component values, pull‑ups, and filtering to your system’s noise, latency, and current limits.
FAQs
Q: Does the LM2903VQPWRG4Q1 require a pull‑up resistor on the output?
A: Yes. The outputs are open‑collector and require an external pull‑up to the desired logic or supply level.
Q: What is the supply voltage range?
A: It operates from a single supply of 2 V to 36 V or dual supplies of ±1 V to ±18 V.
Q: Is this device automotive qualified?
A: Yes. LM2903V‑Q1 devices are AEC‑Q100 qualified. Ordering options cover Grade 0 and Grade 1 temperature ranges.
Q: What package is used for Texas Instruments LM2903VQPWRG4Q1?
A: The device is offered in an 8‑pin TSSOP (PW) package and is typically supplied in Tape & Reel (R).
Q: Does the input common‑mode range include ground?
A: Yes. The input common‑mode range includes ground, which is helpful for single‑supply, ground‑referenced sensing.
Resources
- Texas Instruments Product Page: https://www.ti.com/product/LM2903V-Q1
- Datasheet: https://www.ti.com/lit/ds/symlink/lm2903v-q1.pdf
Summary
The Texas Instruments LM2903VQPWRG4Q1 is a dependable, automotive‑grade dual comparator that simplifies threshold detection and level shifting across automotive and industrial designs. Its wide 2–36 V single‑supply (or ±1–±18 V dual‑supply) capability, open‑collector outputs, ground‑inclusive input range, compact 8‑TSSOP package, and RoHS‑compliant G4 finish make it a strong fit for power supervision, sensor interfaces, and alarm aggregation. With AEC‑Q100 qualification and active lifecycle status, it is a practical choice for long‑term programs where reliability, availability, and compliance matter. For exact electrical characteristics, timing behavior, and grade‑specific limits, consult the official TI datasheet and validate performance in your end application.