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Texas Instruments LM2903EPWRQ1
- Part No.:
- LM2903EPWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2903EPWRQ1.pdf
- Description:
- IC COMPARATOR 2 DIFF 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,238
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Product details
Overview
LM2903EPWRQ1 from Texas Instruments is an AEC-Q100 Grade 0 automotive dual open-drain comparator operating from 2 V to 30 V supply, featuring ±0.37 mV typical input offset voltage, 3.5 nA typical input bias current, and –40°C to +150°C ambient temperature range - deployed in HEV/EV powertrain voltage monitoring and body control module overvoltage detection.
For engineers reviewing the LM2903EPWRQ1 datasheet, LM2903EPWRQ1 pinout, LM2903EPWRQ1 application, or LM2903EPWRQ1 equivalent, key selection criteria include Grade 0 extended-temperature qualification, open-collector output compatibility with TTL/MOS/CMOS logic families, differential input voltage tolerance up to ±36 V, and verified functional safety documentation support.
Technical Context
The LM2903EPWRQ1 implements two independent PNP Darlington-pair input comparators enabling high-gain, low-input-bias operation with common-mode input range extending to ground and up to VCC − 2 V over temperature. Its open-drain NPN output stage supports wired-AND logic and flexible level-shifting across supply domains.
It operates on single or split supplies (V+ − V− = 2 V to 36 V), requires no external pull-up for basic functionality, and maintains stable propagation delay (1.3 µs typical) and output sink capability (6 mA minimum) across its full Grade 0 temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 30 V - supports direct connection to 12 V/24 V automotive batteries and 3.3 V/5 V logic rails without regulation |
| Input Offset Voltage (max) | ±15 mV over –40°C to +150°C - ensures reliable threshold detection in high-temperature engine bay environments |
| Input Bias Current (typ) | 25 nA at 25°C - minimizes loading error on high-impedance sensor reference networks |
| Common-Mode Input Range | 0 V to VCC − 2 V - enables ground-referenced sensing and rail-to-rail input compatibility |
| Differential Input Voltage | ±36 V - withstands load-dump transients and battery reverse-connection events without damage |
| Output Sink Current | 6 mA minimum at VOL = 1.5 V - drives standard 5 kΩ pull-up resistors to TTL-compatible logic low |
| Propagation Delay | 1.3 µs typical (100 mV overdrive) - meets real-time response requirements for overvoltage lockout circuits |
Pinout & Package
TSSOP-8 package (3.00 mm × 4.40 mm) with exposed thermal pad connected directly to GND for enhanced thermal performance in automotive under-hood applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-drain NPN collector - requires external pull-up; sinks current when IN+ < IN− + VOS |
| 1IN− | Comparator 1 inverting input | High-impedance PNP Darlington base - accepts signals down to ground with minimal bias current |
| 1IN+ | Comparator 1 non-inverting input | High-impedance PNP Darlington base - supports reference voltage comparison with <25 nA loading |
| GND | Ground reference | Primary return path for supply, inputs, and thermal pad - must be low-impedance for noise immunity |
| 2IN+ | Comparator 2 non-inverting input | Independent high-Z input - enables dual-threshold detection (e.g., undervoltage + overvoltage) |
| 2IN− | Comparator 2 inverting input | Independent high-Z input - allows differential sensing or independent signal monitoring |
| 2OUT | Comparator 2 output | Open-drain NPN collector - electrically isolated from 1OUT; supports separate logic domains |
| VCC | Positive supply | Accepts 2 V–30 V - powers both comparators and internal bias circuitry; tolerant of automotive transients |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for –40°C to +150°C ambient operation - suitable for engine control units and transmission modules |
| Open-drain outputs | Enable wired-AND logic and level translation between 3.3 V MCU I/O and 12 V system rails |
| ESD protection | HBM 1 kV / CDM 750 V - meets baseline automotive ESD robustness per AEC-Q100-002/-011 |
| Wide supply range | Operates from 2 V - supports start-stop battery voltage sag without reset or malfunction |
| Input common-mode to ground | Allows direct sensing of 0 V referenced signals (e.g., battery negative terminal monitoring) |
Applications
| Engine Coolant Overtemperature Detection | 12 V Battery Undervoltage Lockout |
|---|---|
Use Scenario: Monitors thermistor voltage divider output against fixed reference to trigger fan activation or dashboard warning when coolant exceeds 120°C. IC Role / Device Role / Timing Role: Dual comparator performs windowed threshold detection - one channel for upper limit, second for hysteresis or fault confirmation. Use Value: Grade 0 temperature rating ensures reliable operation at under-hood temperatures exceeding 135°C; ±36 V differential input withstands sensor cable ESD events. | Use Scenario: Compares battery voltage against 11.5 V reference to disable non-critical loads during cranking or deep discharge. IC Role / Device Role / Timing Role: Single comparator acts as precision voltage monitor with fast 1.3 µs response to prevent brown-out resets in infotainment systems. Use Value: 2 V minimum supply allows continued operation during cold-cranking dips to 6 V; open-drain output interfaces directly to 3.3 V microcontroller GPIO. |
| HEV Inverter DC-Link Overvoltage Protection | Body Control Module Door Ajar Sensing |
Use Scenario: Detects DC-link voltage exceeding 450 V in hybrid power inverters to initiate immediate shutdown and gate driver disable. IC Role / Device Role / Timing Role: High-side comparator monitors scaled-down DC-link via resistor divider; output drives safety relay driver. Use Value: ±36 V differential input rating accommodates 1000:1 scaling ratio with margin; Grade 0 qualification ensures reliability near high-power IGBT modules. | Use Scenario: Reads magnetic reed switch closure in door latch assemblies to report open/closed status to BCM microcontroller. IC Role / Device Role / Timing Role: Comparator converts mechanical switch state into clean digital logic signal with noise immunity. Use Value: Input bias current <25 nA prevents false triggering from leakage across long harness runs; open-drain output simplifies interface to 5 V or 3.3 V MCU inputs. |
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 |
|---|---|---|---|
| LM2903BQPWRQ1 | Lower offset (±4 mV max), 2 kV HBM ESD, Grade 1 (–40°C to +125°C) | Better precision and ESD robustness; insufficient for >125°C under-hood locations | Select when higher accuracy and ESD immunity are prioritized over extended temperature range |
| TLV1702QDRQ1 | Rail-to-rail input, 36 V supply, 0.9 µs propagation, but only Grade 1 (–40°C to +125°C) | Superior speed and input range; lacks Grade 0 qualification for extreme-temperature zones | Choose for faster response in cabin or chassis modules where ambient stays below 125°C |
Compared with LM2903BQPWRQ1 and TLV1702QDRQ1, the LM2903EPWRQ1 uniquely satisfies Grade 0 extended-temperature operation while retaining proven automotive reliability, making it the sole option for engine bay and transmission control applications requiring continuous function above 125°C ambient.
Availability
LM2903EPWRQ1 is available at Aetrix Electronics and suitable for automotive HEV/EV powertrain monitoring, infotainment system voltage supervision, and body control module sensor interfacing requiring stable component supply across extended lifecycle programs.
Supply support for LM2903EPWRQ1 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 designed specifically for automotive-grade voltage comparison tasks - emphasizing AEC-Q100 qualification, wide supply tolerance, and robustness in harsh electrical environments.
FAQ
What is the maximum operating temperature for LM2903EPWRQ1?
The LM2903EPWRQ1 is qualified to AEC-Q100 Grade 0 with an ambient operating temperature range of –40°C to +150°C. This specification is validated per TI's production test flow and applies to the LM2903EPWRQ1 in TSSOP-8 packaging. Junction temperature limits remain within safe operating area under recommended PCB thermal design guidelines.
Does LM2903EPWRQ1 support single-supply operation?
Yes, LM2903EPWRQ1 supports true single-supply operation from 2 V to 30 V. Its input common-mode range includes ground, and the open-drain outputs function correctly with pull-up to any compatible logic rail - eliminating need for dual supplies in most automotive sensing applications.
What is the input offset voltage specification for LM2903EPWRQ1?
The LM2903EPWRQ1 has a maximum input offset voltage of ±15 mV over the full –40°C to +150°C temperature range. At 25°C, typical offset is ±2 mV. This value is specified in the official TI datasheet SLCS141M and confirmed across production lots for the "E" suffix variant.
Can LM2903EPWRQ1 outputs be wire-OR'd together?
Yes, LM2903EPWRQ1 features open-drain outputs that can be safely connected together with a shared pull-up resistor to implement wired-AND logic. This configuration is commonly used for fault bus signaling in automotive ECUs where multiple comparators assert a common interrupt line.
Is functional safety documentation available for LM2903EPWRQ1?
Yes, Texas Instruments provides functional safety documentation for LM2903EPWRQ1, including failure mode effect analysis (FMEA), diagnostic coverage metrics, and FIT rate data - all accessible through TI's functional safety resource center under part number LM2903EPWRQ1.
LM2903EPWRQ1 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 ~ 30V
- :
- 7mV @ 5V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 1mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 150°C
- Operating Temperature:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- 8-TSSOP
LM2903EPWRQ1 FAQ
1.How can I place an order for LM2903EPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2903EPWRQ1 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 LM2903EPWRQ1 reliable?
The price and inventory of LM2903EPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2903EPWRQ1 is usually 5 days.
3.What payment methods are accepted for LM2903EPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2903EPWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2903EPWRQ1?
LM2903EPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2903EPWRQ1 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 LM2903EPWRQ1?
For technical support, including LM2903EPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2903EPWRQ1 requirements.
6.How does Aetrix verify that LM2903EPWRQ1 is sourced from the original manufacturer or authorized distributors?
All LM2903EPWRQ1 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 LM2903EPWRQ1 meets industry standards.
7.What is the process for return or replacement of LM2903EPWRQ1?
All LM2903EPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM2903EPWRQ1, 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 LM2903EPWRQ1 part is unused and in its original packaging.
Return procedure for LM2903EPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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