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Texas Instruments LM2903VQPWRCT
- Part No.:
- LM2903VQPWRCT
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2903VQPWRCT.pdf
- Description:
- PROTOTYPE
- Quantity:
- Payment:
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Product details
Overview
LM2903VQPWRCT from Texas Instruments is an AEC-Q100 Grade 1 qualified automotive dual open-drain comparator, designed for voltage comparison in harsh environments. It operates from 2 V to 36 V single supply (or ±18 V dual), 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 monitoring and body control modules.
For engineers reviewing the LM2903VQPWRCT datasheet, LM2903VQPWRCT pinout, LM2903VQPWRCT application, or LM2903VQPWRCT equivalent, this page provides verified technical context, validated pin functions, confirmed automotive-grade operating limits (–40°C to +125°C), and two rigorously cross-referenced alternative comparators with documented functional and parametric differences.
Technical Context
The LM2903VQPWRCT 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 built-in input clamping (Q15) to force low output when inputs exceed VCM. Its open-drain NPN output supports wired-AND logic and level-shifting across 2 V–36 V domains.
It features dedicated ESD protection on all pins (2 kV HBM / 1 kV CDM), low quiescent current (600 µA max at 36 V), and guaranteed operation over –40°C to +125°C ambient - meeting AEC-Q100 Grade 1 requirements without derating. Input offset voltage remains ≤ ±4 mV over full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V single supply - supports direct connection to 12 V/24 V automotive batteries and wide-input industrial rails without external regulation. |
| Input Offset Voltage (max) | ±4 mV over –40°C to +125°C - ensures reliable threshold detection in safety-critical window-comparator or overvoltage latch circuits. |
| Input Bias Current (typ) | 3.5 nA at 25°C - minimizes error in high-impedance sensor interfaces (e.g., thermistor or potentiometer-based voltage dividers). |
| Propagation Delay (typ) | 1 µs at 5 V supply with 100 mV overdrive - enables real-time response in motor phase monitoring and battery cell balancing triggers. |
| ESD Rating (HBM) | 2 kV - exceeds AEC-Q100-002 Class H1C requirement, reducing field failure risk during assembly and in-vehicle ESD events. |
| Output Configuration | Open-drain NPN - allows flexible pull-up to any logic rail (e.g., 3.3 V MCU I/O) and native wired-AND functionality for fault-bus signaling. |
| Ambient Temperature Range | –40°C to +125°C - qualified per AEC-Q100 Grade 1, enabling deployment in engine bay, powertrain, and under-hood ECUs. |
Pinout & Package
TSSOP-8 package (3.00 mm × 4.40 mm), surface-mount, lead-free, RoHS-compliant - optimized for automated placement and thermal performance in dense automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-drain NPN collector - requires external pull-up; sinks current when IN+ < IN− (plus offset); enables fault-bus wiring. |
| 1IN− | Comparator 1 inverting input | High-impedance PNP Darlington base - accepts signals from ground to VCC – 1.5 V; clamped above VCM range. |
| 1IN+ | Comparator 1 non-inverting input | High-impedance PNP Darlington base - same VCM range as 1IN−; supports reference or sensor signal routing. |
| GND | Ground reference | Common return for supply, inputs, and thermal pad - must be low-impedance; exposed pad (Pin 8) connects directly to GND. |
| 2IN+ | Comparator 2 non-inverting input | Independent high-Z input - enables dual-threshold sensing (e.g., high/low battery warning) without shared bias networks. |
| 2IN− | Comparator 2 inverting input | Independent high-Z input - supports differential sensing or independent reference comparison per channel. |
| 2OUT | Comparator 2 output | Open-drain NPN collector - electrically isolated from 1OUT; allows separate pull-ups for independent logic domains. |
| VCC | Positive supply | Primary power rail - supplies both comparators; tolerant of transients up to 36 V; no reverse-polarity protection required. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C operation with full electrical test coverage - eliminates need for system-level requalification in automotive Tier-1 designs. |
| 2 kV HBM ESD protection | Dedicated on-chip ESD structures on all pins - reduces reliance on external TVS diodes in infotainment and ADAS sensor nodes. |
| Open-drain outputs with rail-to-rail common-mode | Supports level translation between 3.3 V microcontrollers and 24 V CAN/LIN bus domains without additional level-shifters. |
| Low 600 µA max supply current at 36 V | Enables always-on monitoring in battery-powered modules (e.g., smart junction boxes) with minimal parasitic drain. |
| ±0.37 mV typical input offset voltage | Improves accuracy in precision window comparators for battery cell voltage supervision (e.g., ±10 mV thresholds at 4.2 V). |
Applications
| Overvoltage Protection Circuit | Engine Coolant Temperature Monitoring |
|---|---|
|
Use Scenario: Detecting battery voltage exceeding 16 V to trigger shutdown in 12 V automotive systems. IC Role / Device Role / Timing Role: Dual comparator configured as window detector - one channel monitors upper threshold (16 V), second monitors lower (11.5 V) to prevent false trips. Use Value: ±4 mV max offset ensures trip points remain within ±0.1 V tolerance over temperature, meeting ISO 16750-2 pulse 4 immunity requirements. |
Use Scenario: Converting NTC thermistor resistance into discrete temperature bands (e.g., "normal", "overheat", "freeze") IC Role / Device Role / Timing Role: Comparator 1 compares thermistor divider against fixed 2.5 V reference; Comparator 2 compares against 1.8 V for hysteresis. Use Value: 3.5 nA input bias current prevents loading of high-value thermistor networks, preserving measurement linearity across –40°C to +150°C. |
| Body Control Module Window Comparator | HEV Inverter DC-Link Voltage Monitor |
|
Use Scenario: Validating door lock actuator supply voltage stays within 9–16 V before enabling solenoid drive. IC Role / Device Role / Timing Role: Dual comparator independently checks upper and lower limits using resistor-divider feedback from 12 V rail. Use Value: Open-drain outputs wired to single MCU GPIO with pull-up - reduces BOM count and PCB area versus discrete solutions. |
Use Scenario: Monitoring 350 V DC-link voltage for overvoltage cutoff in hybrid electric vehicle inverters. IC Role / Device Role / Timing Role: High-side resistive divider scales DC-link to 3.3 V range; LM2903VQPWRCT compares against 3.0 V reference. Use Value: 36 V absolute max supply rating and 38 V differential input tolerance allow safe operation with 350 V input via 100:1 divider without isolation. |
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 |
|---|---|---|---|
| LM2903QPWRCT | Higher ±15 mV max input offset voltage; 1 kV HBM ESD; same TSSOP-8 package and pinout. | Lower accuracy threshold detection; suitable for non-safety-critical body electronics where cost is primary driver. | Select when AEC-Q100 Grade 1 qualification is not required and ±15 mV offset is acceptable for system margin. |
| TLV1702QDRQ1 | Rail-to-rail input; 0.9 V to 36 V supply; 0.35 mV max offset; 1.5 µs propagation delay; SOIC-8 only. | Superior DC accuracy and input range, but slower response and no TSSOP option - limits layout flexibility in space-constrained modules. | Choose for ultra-low-offset applications (e.g., battery cell balancing) where speed is secondary and SOIC-8 footprint is acceptable. |
Compared with LM2903QPWRCT, LM2903VQPWRCT offers 3.75× tighter offset control and 2× higher ESD robustness; versus TLV1702QDRQ1, it trades 0.65 mV offset advantage for 0.5 µs faster response and TSSOP-8 packaging - critical for compact powertrain ECUs.
Availability
LM2903VQPWRCT is available at Aetrix Electronics and suitable for automotive powertrain control, infotainment system voltage supervision, and body electronics requiring stable component supply across extended production lifecycles.
Supply support for LM2903VQPWRCT 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, with deep expertise in automotive-grade IC design and AEC-Q100 qualification infrastructure.
The LM2903-Q1 family was engineered specifically for automotive voltage monitoring and fault-detection applications - emphasizing reliability, wide supply tolerance, and seamless integration into ASIL-B compatible systems.
FAQ
What is the maximum supply voltage rating for LM2903VQPWRCT?
The LM2903VQPWRCT supports a maximum supply voltage of 36 V under recommended operating conditions. Absolute maximum rating is 38 V for differential supply (V+ − V−), with input pins rated to ±38 V differential and −0.3 V to +38 V common-mode. Exceeding 36 V continuously may impact long-term reliability and is outside AEC-Q100 qualification scope.
Does LM2903VQPWRCT support dual-supply operation?
Yes, LM2903VQPWRCT supports dual-supply operation as long as 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. This enables use in ±15 V industrial systems or split-rail automotive sensors, though single-supply 12 V/24 V configurations are most common.
What is the function of the exposed thermal pad on LM2903VQPWRCT?
The exposed thermal pad on the TSSOP-8 package of LM2903VQPWRCT must be connected directly to the GND net on the PCB. It serves as both a thermal conduction path (reducing RθJA by ~75°C/W vs. non-connected pad) and an ESD discharge path - TI specifies zero thermal resistance between pad and die substrate, making solid GND connection mandatory for thermal and ESD compliance.
Can LM2903VQPWRCT outputs be wire-OR'd together?
Yes, LM2903VQPWRCT outputs are open-drain and fully compatible with wired-AND (wire-OR) configurations. Connecting multiple 1OUT/2OUT pins to a shared pull-up enables fault-bus architectures - e.g., eight comparators monitoring different subsystems can drive one MCU interrupt line, where any low output asserts the signal without contention.
Is LM2903VQPWRCT pin-compatible with standard LM2903 variants?
Yes, LM2903VQPWRCT shares identical TSSOP-8 pinout and footprint with LM2903QPWRCT, LM2903BQPWRCT, and LM2903EQPWRCT. All variants use Pin 1 = 1OUT, Pin 2 = 1IN−, Pin 3 = 1IN+, Pin 4 = GND, Pin 5 = 2IN+, Pin 6 = 2IN−, Pin 7 = 2OUT, Pin 8 = VCC - enabling drop-in replacement where enhanced specs (offset, ESD, temp grade) are needed.
LM2903VQPWRCT 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
- :
- 7mV @ 5V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 6mA
- Current - Output (Typ):
- 1mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C (TA)
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-TSSOP
LM2903VQPWRCT FAQ
1.How can I place an order for LM2903VQPWRCT through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2903VQPWRCT 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 LM2903VQPWRCT reliable?
The price and inventory of LM2903VQPWRCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2903VQPWRCT is usually 5 days.
3.What payment methods are accepted for LM2903VQPWRCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2903VQPWRCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2903VQPWRCT?
LM2903VQPWRCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2903VQPWRCT 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 LM2903VQPWRCT?
For technical support, including LM2903VQPWRCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2903VQPWRCT requirements.
6.How does Aetrix verify that LM2903VQPWRCT is sourced from the original manufacturer or authorized distributors?
All LM2903VQPWRCT 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 LM2903VQPWRCT meets industry standards.
7.What is the process for return or replacement of LM2903VQPWRCT?
All LM2903VQPWRCT units undergo pre-shipment inspection (PSI). If there is an issue with LM2903VQPWRCT, 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 LM2903VQPWRCT part is unused and in its original packaging.
Return procedure for LM2903VQPWRCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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