My Inquiry
My Account
Texas Instruments LM2903AVQPWRQ1
- Part No.:
- LM2903AVQPWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2903AVQPWRQ1.pdf
- Description:
- IC COMPARATOR 2 DIFF 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,939
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM2903AVQPWRQ1 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 - enabling precise threshold detection in HEV/EV powertrain and body control modules.
For engineers reviewing the LM2903AVQPWRQ1 datasheet, LM2903AVQPWRQ1 pinout, LM2903AVQPWRQ1 application, or LM2903AVQPWRQ1 equivalent, this page provides verified package mapping (TSSOP-8), confirmed automotive-grade electrical specs, functional safety documentation support, and validated drop-in alternatives for cost-optimized design continuity.
Technical Context
The LM2903AVQPWRQ1 implements a PNP Darlington input stage enabling rail-to-rail common-mode operation down to ground and up to VCC − 1.5 V, with differential input range extended to ±36 V. Its open-drain NPN output supports wired-AND logic and flexible pull-up voltage selection across mixed-voltage domains.
It features dedicated ESD protection on all pins (2 kV HBM / 1 kV CDM), operates over −40°C to +125°C ambient, and maintains stable quiescent current (600 µA typical at 5 V) independent of supply voltage - critical for always-on automotive subsystems.
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 accurate window-comparison of low-amplitude sensor signals (e.g., coolant temp, battery cell voltage). |
| Input Bias Current (typ) | 3.5 nA - minimizes loading error on high-impedance reference dividers and thermistor networks. |
| Propagation Delay (typ) | 1 µs - sufficient for fast fault detection in motor phase monitoring and overvoltage lockout circuits. |
| Quiescent Current (typ) | 600 µA - ensures low standby power in always-on modules like door controllers and lighting ECUs. |
| ESD Rating (HBM) | 2 kV - exceeds AEC-Q100 Class H1C requirement for robustness in assembly and field environments. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood and cabin-mounted automotive applications per Grade 1 specification. |
Pinout & Package
TSSOP-8 package (3.00 mm × 4.40 mm), surface-mount, exposed pad connected to GND for thermal and noise performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-drain NPN sink - requires external pull-up to define logic-high level; enables level shifting and wired-AND bus operation. |
| 1IN− | Comparator 1 inverting input | Negative input node of first comparator; accepts voltages from GND to VCC − 1.5 V. |
| 1IN+ | Comparator 1 non-inverting input | Positive input node of first comparator; supports same common-mode range as 1IN−. |
| GND | Ground reference | Primary return path for supply and signal; thermal pad must be soldered directly to PCB GND plane. |
| 2IN+ | Comparator 2 non-inverting input | Positive input node of second comparator; electrically isolated but shares same supply and GND. |
| 2IN− | Comparator 2 inverting input | Negative input node of second comparator; identical electrical characteristics to 1IN−. |
| 2OUT | Comparator 2 output | Independent open-drain output - allows dual-threshold detection (e.g., over/under-voltage) with shared pull-up. |
| VCC | Positive supply | Single-supply input (2–32 V); no negative rail required; supports dual-supply operation if V− is ≥ −0.3 V. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent comparators | Enables simultaneous monitoring of two distinct thresholds (e.g., battery undervoltage and overvoltage) in one footprint. |
| Open-drain outputs | Permits flexible logic-level translation and wired-AND configuration for fault-bus signaling across voltage domains. |
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C operation with full traceability - eliminates requalification effort for automotive Tier 1 designs. |
| Low input bias current (3.5 nA typ) | Preserves accuracy in high-impedance sensing circuits (e.g., resistive divider-based voltage monitors) without added buffering. |
| Wide supply range (2–32 V) | Eliminates need for pre-regulation in 12 V/24 V systems - simplifies BOM and improves system efficiency. |
Applications
| Overvoltage Protection | Battery State Monitoring |
|---|---|
Use Scenario: Detecting when 12 V vehicle battery exceeds 14.5 V during alternator regulation failure. IC Role / Device Role / Timing Role: Dual comparator compares battery voltage against precision reference; one channel triggers shutdown, the other enables warning LED. Use Value: ±0.37 mV offset ensures trip point accuracy within ±10 mV, preventing false trips during load dump transients. | Use Scenario: Monitoring individual Li-ion cell voltage in 12S battery management for EV traction packs. IC Role / Device Role / Timing Role: Compares cell voltage against upper/lower thresholds using resistor-divider inputs; open-drain outputs feed microcontroller GPIOs. Use Value: 3.5 nA input bias current avoids measurement error in high-R dividers (e.g., 1 MΩ/1 MΩ), preserving SOC estimation fidelity. |
| Motor Phase Fault Detection | Infotainment Power Sequencing |
Use Scenario: Identifying short-to-battery or open-circuit conditions in BLDC motor phase drivers. IC Role / Device Role / Timing Role: Compares phase voltage against mid-rail reference during PWM off-time; fast 1 µs response captures transient faults. Use Value: 1 µs propagation delay enables detection of <10 µs fault windows - critical for IGBT/driver protection before thermal runaway. | Use Scenario: Enabling display backlight only after main SoC power rail stabilizes in digital cluster. IC Role / Device Role / Timing Role: Comparator monitors 5 V rail against 2.5 V reference; output drives enable pin of LED driver IC via pull-up to 3.3 V. Use Value: 2–32 V supply range allows direct monitoring of unregulated 5 V rail without LDO - reduces component count and board space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2903BQPWRQ1 | Same TSSOP-8 package; improved 2 kV HBM ESD rating; lower 0.37 mV offset; 3.5 nA bias current. | Identical automotive qualification (Grade 1); supports same temperature and supply ranges. | Select when enhanced ESD robustness or tighter offset tolerance is required; pin-compatible drop-in replacement. |
| TLV1702QDRQ1 | Rail-to-rail input; 0.85 mV max offset; 150 µA supply current; 1.8–36 V supply; SOIC-8 only. | Higher precision but higher quiescent current; not qualified for Grade 1 extended temperature range. | Choose for ultra-low-power always-on monitoring where 125°C operation is not required; requires layout change due to SOIC-8 footprint. |
Compared with LM2903AVQPWRQ1, LM2903BQPWRQ1 offers identical form-factor and superior electrical specs without layout changes, while TLV1702QDRQ1 trades automotive temperature compliance for rail-to-rail input flexibility and lower IQ - making it suitable only for cabin-located, non-under-hood applications.
Availability
LM2903AVQPWRQ1 is available at Aetrix Electronics and suitable for automotive powertrain control, body electronics, and infotainment systems requiring stable component supply across long production lifecycles.
Supply support for LM2903AVQPWRQ1 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 automotive voltage comparison tasks - emphasizing AEC-Q100 reliability, wide supply tolerance, and open-drain interoperability across legacy and next-generation ECUs.
FAQ
What is the maximum supply voltage for LM2903AVQPWRQ1?
The LM2903AVQPWRQ1 supports a maximum supply voltage of 32 V, as specified for "V" suffix devices in the LM2903-Q1 family. This enables direct interface with 24 V automotive systems and accommodates load-dump transients without external clamping. Operation beyond 32 V risks permanent damage per absolute maximum ratings.
Does LM2903AVQPWRQ1 support dual-supply operation?
Yes, LM2903AVQPWRQ1 supports dual-supply operation provided the difference between V+ and V− is within 2 V to 36 V, and V+ is at least 1.5 V more positive than the input common-mode voltage. The device does not require a negative rail but can accept V− as low as −0.3 V, enabling flexible biasing in mixed-signal systems.
What is the input common-mode voltage range of LM2903AVQPWRQ1?
The input common-mode voltage range of LM2903AVQPWRQ1 extends from ground to VCC − 1.5 V at 25°C, and to VCC − 2.0 V over the full −40°C to +125°C operating range. Inputs may exceed VCC without damage, but proper comparator function is guaranteed only within the specified common-mode window.
Is LM2903AVQPWRQ1 pin-compatible with standard LM2903-Q1 variants?
Yes, LM2903AVQPWRQ1 uses the industry-standard TSSOP-8 footprint and identical pinout as other LM2903-Q1 family members in the same package - including LM2903QPWRQ1 and LM2903BQPWRQ1. No PCB redesign is needed when upgrading to the "AV" variant for improved offset or ESD performance.
How does the open-drain output of LM2903AVQPWRQ1 function in system design?
The open-drain output of LM2903AVQPWRQ1 requires an external pull-up resistor to define the logic-high voltage level. This enables level translation (e.g., 12 V sense → 3.3 V MCU input), wired-AND fault-bus architectures, and compatibility with TTL, MOS, and CMOS logic families - all without additional level-shifter ICs.
LM2903AVQPWRQ1 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
- :
- 2mV @ 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
LM2903AVQPWRQ1 FAQ
1.How can I place an order for LM2903AVQPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2903AVQPWRQ1 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 LM2903AVQPWRQ1 reliable?
The price and inventory of LM2903AVQPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2903AVQPWRQ1 is usually 5 days.
3.What payment methods are accepted for LM2903AVQPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2903AVQPWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2903AVQPWRQ1?
LM2903AVQPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2903AVQPWRQ1 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 LM2903AVQPWRQ1?
For technical support, including LM2903AVQPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2903AVQPWRQ1 requirements.
6.How does Aetrix verify that LM2903AVQPWRQ1 is sourced from the original manufacturer or authorized distributors?
All LM2903AVQPWRQ1 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 LM2903AVQPWRQ1 meets industry standards.
7.What is the process for return or replacement of LM2903AVQPWRQ1?
All LM2903AVQPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM2903AVQPWRQ1, 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 LM2903AVQPWRQ1 part is unused and in its original packaging.
Return procedure for LM2903AVQPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2903AVQPWRQ1 Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP Semiconductors
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
