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Texas Instruments LM2903BHQDGKRQ1
- Part No.:
- LM2903BHQDGKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM2903BHQDGKRQ1.pdf
- Description:
- IC COMPARATOR 2 DIFF 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,048
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Product details
Overview
LM2903BHQDGKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified dual open-drain comparator for automotive systems, operating from 2 V to 36 V supply, with ±0.37 mV typical input offset voltage, 3.5 nA typical input bias current, and 200 µA typical quiescent current per comparator. It serves in HEV/EV powertrain monitoring, body control modules, and infotainment voltage supervision.
For engineers reviewing the LM2903BHQDGKRQ1 datasheet, LM2903BHQDGKRQ1 pinout, LM2903BHQDGKRQ1 application, or LM2903BHQDGKRQ1 equivalent, key selection criteria include its extended ESD robustness (2 kV HBM), wide common-mode input range including ground, TTL/MOS/CMOS-compatible output, and guaranteed operation from –40°C to +125°C ambient.
Technical Context
The LM2903BHQDGKRQ1 implements a PNP Darlington-pair input stage enabling low input bias current and high gain while supporting rail-to-rail common-mode input down to ground. Its open-drain NPN output stage allows flexible logic-level translation via external pull-up and supports wired-AND configurations.
It features dedicated ESD protection on all pins (2 kV HBM, 1 kV CDM), improved negative input voltage handling versus legacy LM2903-Q1, and tri-temp test options (–40°C/25°C/125°C) for production validation. The device meets functional safety requirements with documentation support for ISO 26262 system design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports direct connection to 12 V/24 V automotive batteries and wide-input industrial rails without regulation. |
| Input Offset Voltage (typ) | ±0.37 mV - enables precise threshold detection in battery voltage monitoring and motor overcurrent sensing. |
| Input Bias Current (typ) | 3.5 nA - minimizes error in high-impedance sensor interfaces like thermistor or potentiometer-based feedback. |
| Quiescent Current (per comp) | 200 µA - ensures low-power operation in always-on vehicle subsystems such as door module wake-up circuits. |
| Propagation Delay (typ) | 300 ns (TTL input) - provides fast response for real-time fault detection in powertrain control loops. |
| ESD Rating (HBM) | 2 kV - exceeds standard AEC-Q100 H1C requirement, improving robustness against assembly and field electrostatic events. |
| Operating Temperature | –40°C to +125°C ambient - certified for Grade 1 automotive use in engine bay and under-hood ECUs. |
Pinout & Package
VSSOP-8 (DGK) package: 3.00 mm × 4.40 mm body, exposed thermal pad connected directly to GND for enhanced thermal performance in compact automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-drain NPN sink - requires external pull-up; enables level shifting and wired-AND logic with other comparators. |
| 1IN− | Comparator 1 inverting input | Differential input node - accepts signals up to 36 V; common-mode range includes ground for single-supply sensing. |
| 1IN+ | Comparator 1 non-inverting input | Differential input node - supports input voltages exceeding VCC for high-side sensing applications. |
| GND | Ground reference | Primary return path for supply and signals; thermal pad must be soldered to GND plane for thermal reliability. |
| 2IN+ | Comparator 2 non-inverting input | Independent input channel - allows dual-threshold detection (e.g., overvoltage + undervoltage) in one package. |
| 2IN− | Comparator 2 inverting input | Independent input channel - supports differential or single-ended configurations with separate references. |
| 2OUT | Comparator 2 output | Open-drain NPN sink - electrically isolated from 1OUT; enables independent logic outputs or shared pull-up. |
| VCC | Positive supply | Single supply input - powers both comparators; no dual-supply configuration required for most automotive use cases. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation in safety-critical automotive ECUs per ISO/TS 16949 process controls. |
| 2 kV HBM ESD protection | Enhanced pin-level robustness reduces field failure risk during handling, assembly, and vehicle service cycles. |
| Common-mode input range includes ground | Enables direct interface with 0 V–referenced sensors (e.g., coolant temperature, brake switch) without level-shifting circuitry. |
| Differential input voltage range ±36 V | Allows safe comparison of signals referenced to different potentials - critical for battery cell monitoring and isolation diagnostics. |
| Output compatible with TTL/MOS/CMOS | Supports direct interfacing to microcontroller GPIOs, FPGAs, and logic families across 1.8 V–5 V domains using appropriate pull-up. |
Applications
| HEV/EV Battery Management | Body Control Module (BCM) |
|---|---|
Use Scenario: Monitoring individual cell voltages and pack-level overvoltage/undervoltage thresholds in 400 V traction battery systems. IC Role / Device Role / Timing Role: Dual comparator performing simultaneous high- and low-threshold detection with open-drain outputs tied to MCU interrupt lines. Use Value: ±0.37 mV offset and 300 ns propagation delay enable accurate, fast-response fault triggering before thermal runaway initiates. | Use Scenario: Detecting door-open status, seatbelt latch position, and interior lighting ambient light levels in modern BCMs. IC Role / Device Role / Timing Role: Voltage window comparator generating wake-up signals for low-power microcontrollers during vehicle entry events. Use Value: 200 µA per comparator quiescent current and ground-sensing capability reduce standby power consumption below 1 µA total system leakage. |
| Infotainment Display Backlight Control | Powertrain Engine Control Unit |
Use Scenario: Regulating LED backlight brightness based on ambient light sensor output and user-set dimming thresholds. IC Role / Device Role / Timing Role: Dual comparator implementing hysteresis-based PWM dimming control with independent upper/lower thresholds. Use Value: Independent 1IN+/1IN− and 2IN+/2IN− channels allow seamless integration of hysteresis without external resistors or op-amps. | Use Scenario: Supervising 5 V and 3.3 V rail integrity in engine control units during cold cranking and load dump transients. IC Role / Device Role / Timing Role: Dual comparator comparing regulated supply outputs against precision references to assert reset or fault flags. Use Value: 2 V to 36 V supply range and ±36 V differential input withstand capability ensure reliable operation during 12 V battery dips to 5.5 V and load dump spikes to 35 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2903QPWRQ1 | TSSOP-8 package; higher 1 kV HBM ESD rating; ±4 mV max offset voltage over temp vs. ±5 mV for LM2903BHQDGKRQ1. | Same Grade 1 temperature range but lower precision and ESD margin; suitable for cost-sensitive non-safety-critical functions. | Select when board space permits larger TSSOP footprint and offset drift < ±4 mV is acceptable. |
| TLV1702QDRQ1 | Rail-to-rail input; 36 V supply capable; 0.9 µs typical response time; 50 µA quiescent current; no open-drain output (push-pull). | Higher speed and lower power, but incompatible output architecture prevents direct replacement in wired-AND or level-shifted designs. | Choose only if redesigning output interface and requiring sub-1 µs response with rail-to-rail sensing. |
Compared with LM2903QPWRQ1, LM2903BHQDGKRQ1 delivers tighter offset and superior ESD robustness in a smaller VSSOP package; versus TLV1702QDRQ1, it retains open-drain flexibility essential for automotive fault-bus architectures despite slower response.
Availability
LM2903BHQDGKRQ1 is available at Aetrix Electronics and suitable for HEV/EV battery management, body control modules, and infotainment display systems requiring stable component supply across automotive production lifecycles.
Supply support for LM2903BHQDGKRQ1 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, embedded processing, and connectivity solutions for automotive, industrial, and personal electronics markets.
The LM2903-Q1 family was designed specifically for automotive-grade voltage comparison tasks - emphasizing AEC-Q100 compliance, wide supply tolerance, and robustness in harsh electrical environments.
FAQ
What is the maximum supply voltage rating for LM2903BHQDGKRQ1?
The LM2903BHQDGKRQ1 supports a maximum supply voltage of 36 V, verified per absolute maximum ratings in the official datasheet. This rating applies across the full –40°C to +125°C operating temperature range and enables direct connection to 24 V commercial vehicle systems and 12 V automotive batteries during load dump conditions. Exceeding 36 V risks permanent damage to the internal ESD structures and input transistors.
Does LM2903BHQDGKRQ1 support dual-supply operation?
Yes, LM2903BHQDGKRQ1 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. However, most automotive applications use single-supply configuration with GND as the reference. The device's common-mode input range includes ground, making single-supply use practical for sensor interfaces and rail monitoring.
What is the purpose of the exposed thermal pad on the DGK package of LM2903BHQDGKRQ1?
The exposed thermal pad on the LM2903BHQDGKRQ1 VSSOP-8 (DGK) package must be soldered directly to the GND plane to provide a low-thermal-resistance path from the die to the PCB. This improves power dissipation during sustained output sinking and maintains junction temperature within the 150°C limit. TI specifies RθJB = 112.4°C/W for this package - omitting pad connection degrades thermal performance by >40% and risks thermal shutdown in high-current applications.
Can LM2903BHQDGKRQ1 inputs safely exceed the VCC supply voltage?
Yes, the non-inverting input (IN+) of LM2903BHQDGKRQ1 can safely exceed VCC - the differential input voltage range is rated at ±36 V, and the absolute maximum input voltage is –0.3 V to 38 V. This allows high-side sensing applications, such as monitoring battery voltage relative to chassis ground while powered from a lower auxiliary rail. However, the inverting input (IN–) must remain within VCC – 1.5 V for accurate operation per recommended conditions.
How does the LM2903BHQDGKRQ1 differ from the standard LM2903-Q1 in terms of ESD performance?
The LM2903BHQDGKRQ1 features improved 2 kV HBM and 1 kV CDM ESD ratings versus 1 kV HBM and 750 V CDM for the standard LM2903-Q1. This enhancement results from dedicated on-die ESD protection structures on all pins, validated per AEC-Q100-002 and -011. The "B" suffix denotes this upgraded robustness, which is critical for automotive manufacturing environments and field reliability in high-vibration, high-static-charge scenarios.
LM2903BHQDGKRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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
- :
- 2.5mV @ 5V
- Voltage - Input Offset (Max):
- 0.025µA @ 5V
- Current - Input Bias (Max):
- 21mA @ 5V
- Current - Output (Typ):
- 600µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 300ns (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- 8-VSSOP
LM2903BHQDGKRQ1 FAQ
1.How can I place an order for LM2903BHQDGKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2903BHQDGKRQ1 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 LM2903BHQDGKRQ1 reliable?
The price and inventory of LM2903BHQDGKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2903BHQDGKRQ1 is usually 5 days.
3.What payment methods are accepted for LM2903BHQDGKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2903BHQDGKRQ1 transactions.
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4.How is shipping managed for LM2903BHQDGKRQ1?
LM2903BHQDGKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2903BHQDGKRQ1 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 LM2903BHQDGKRQ1?
For technical support, including LM2903BHQDGKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2903BHQDGKRQ1 requirements.
6.How does Aetrix verify that LM2903BHQDGKRQ1 is sourced from the original manufacturer or authorized distributors?
All LM2903BHQDGKRQ1 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 LM2903BHQDGKRQ1 meets industry standards.
7.What is the process for return or replacement of LM2903BHQDGKRQ1?
All LM2903BHQDGKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM2903BHQDGKRQ1, 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 LM2903BHQDGKRQ1 part is unused and in its original packaging.
Return procedure for LM2903BHQDGKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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