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Texas Instruments LM2903BHQPWRQ1
- Part No.:
- LM2903BHQPWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2903BHQPWRQ1.pdf
- Description:
- IC COMPARATOR 2 DIFF 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,282
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Product details
Overview
LM2903BHQPWRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified automotive dual open-drain comparator with ±0.37 mV typical input offset voltage, 3.5 nA typical input bias current, 200 µA typical supply current per comparator, and operation across 2 V to 36 V single or dual supplies. It serves as a precision voltage comparison engine in HEV/EV powertrain monitoring circuits.
For engineers reviewing the LM2903BHQPWRQ1 datasheet, LM2903BHQPWRQ1 pinout, LM2903BHQPWRQ1 application, or LM2903BHQPWRQ1 equivalent, key selection criteria include its −40°C to +125°C ambient operating range, 2 kV HBM ESD rating, open-collector output compatibility with TTL/MOS/CMOS, and guaranteed performance over full automotive temperature and supply voltage ranges.
Technical Context
The LM2903BHQPWRQ1 implements a PNP Darlington pair input stage enabling high gain, low input bias current (3.5 nA typ), and common-mode input range extending to ground. Its open-drain NPN output stage supports wired-AND logic and level-shifting across supply domains up to 36 V.
It operates with differential input voltage range of ±38 V, input common-mode range from −0.3 V to (V+) − 2.0 V over temperature, and delivers 1 µs typical propagation delay under 5 mV overdrive at 5 V supply - optimized for fast fault detection in safety-critical automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports direct connection to 12 V/24 V vehicle batteries and wide-input industrial rails without regulation. |
| Input Offset Voltage (max) | ±4 mV over −40°C to +125°C - ensures reliable threshold detection in battery voltage monitors and motor overcurrent comparators. |
| Input Bias Current (typ) | 3.5 nA - minimizes error in high-impedance sensor interfaces (e.g., thermistor dividers, potentiometer feedback). |
| Quiescent Current (per comp) | 200 µA typical - enables always-on diagnostics in body control modules with minimal standby power impact. |
| Propagation Delay | 1 µs typical at 5 mV overdrive - meets response timing requirements for real-time overvoltage/undervoltage shutdown in DC-DC controllers. |
| ESD Rating (HBM) | 2 kV - exceeds AEC-Q100 H1C classification for robustness in manufacturing and field environments. |
| Output Type | Open-drain - allows flexible pull-up to any logic rail (e.g., 3.3 V MCU I/O) and wired-AND configuration for multi-sensor alarm aggregation. |
Pinout & Package
TSSOP-8 package (3.00 mm × 4.40 mm), surface-mount, with exposed thermal pad connected directly to GND for enhanced thermal performance in 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+ + VIO. |
| 1IN− | Comparator 1 inverting input | High-impedance PNP Darlington base - accepts signals down to −0.3 V for ground-referenced sensing. |
| 1IN+ | Comparator 1 non-inverting input | High-impedance PNP Darlington base - supports common-mode voltages up to VCC − 2.0 V. |
| GND | Ground reference | Power and signal return; thermal pad must be soldered to GND plane for thermal reliability. |
| 2IN+ | Comparator 2 non-inverting input | Independent high-impedance input - enables dual-threshold or window-comparator topologies. |
| 2IN− | Comparator 2 inverting input | Independent high-impedance input - supports differential sensing or reference comparison. |
| 2OUT | Comparator 2 output | Open-drain NPN collector - electrically isolated from 1OUT; supports independent load switching. |
| VCC | Positive supply | Accepts 2 V–36 V - powers both comparators and internal bias circuitry; no separate V− required. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 (−40°C to +125°C ambient) - certified for use in powertrain, infotainment, and body control modules. |
| Low input offset voltage | ±0.37 mV typical - reduces false triggering in precision battery cell voltage monitoring and current-sense amplifier thresholds. |
| Wide supply range | 2 V to 36 V single supply - eliminates need for local LDOs in 12 V/24 V systems and simplifies BOM in mixed-rail designs. |
| Open-drain outputs | Independent sinking capability up to 25 mA per output - enables direct interface to 3.3 V/5 V MCUs and fault-line aggregation via wired-AND. |
| Enhanced ESD protection | 2 kV HBM / 1 kV CDM - improves manufacturing yield and field reliability in unshielded harness environments. |
Applications
| HEV/EV Battery Management | Automotive Body Control Module |
|---|---|
Use Scenario: Monitoring individual cell voltages against upper/lower thresholds in 400 V traction battery packs. IC Role / Device Role / Timing Role: Dual comparator performing simultaneous overvoltage and undervoltage detection per cell string. Use Value: ±0.37 mV offset enables accurate 20 mV threshold windows; 1 µs response ensures fast isolation during fault events. | Use Scenario: Detecting door-open status via microswitch closure and interior light dimming via PWM-controlled LED driver enable. IC Role / Device Role / Timing Role: Dual comparator converting mechanical switch states and analog dimmer signals into clean digital logic levels. Use Value: Ground-sensing inputs interface directly with chassis-grounded switches; 200 µA quiescent current preserves battery life in sleep mode. |
| Infotainment Power Sequencing | Engine Control Unit (ECU) Sensor Interface |
Use Scenario: Validating stable 5 V and 3.3 V rail presence before releasing reset to audio SoC and display controller. IC Role / Device Role / Timing Role: Dual comparator acting as independent power-good detectors with adjustable hysteresis. Use Value: 2 V–36 V supply range allows direct monitoring of raw 12 V input; open-drain outputs wire-AND to single interrupt line. | Use Scenario: Converting analog oxygen sensor (O2) output and knock sensor piezo signal into digital flags for ECU decision logic. IC Role / Device Role / Timing Role: Dual comparator providing fast edge-triggered event detection on two independent analog channels. Use Value: 3.5 nA input bias avoids loading high-Z sensor outputs; −0.3 V to VCC−2.0 V common-mode range accommodates sensor offsets and transients. |
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 |
|---|---|---|---|
| LM2903QPWRQ1 | Higher ±15 mV max input offset voltage; 1 kV HBM ESD; same pinout and package. | Less suitable for tight-threshold applications (e.g., <50 mV window detection); adequate for general-purpose voltage monitoring. | Select when cost sensitivity outweighs precision requirements and ESD robustness is secondary. |
| TLV1702QDRQ1 | Rail-to-rail input; 0.9 V to 36 V supply; 350 µA IQ; 1.2 µs propagation delay; SOIC-8 only. | Supports near-ground sensing without level-shifting; higher supply current limits ultra-low-power use cases. | Choose when input common-mode must extend to V− (e.g., single-supply op-amp replacement) and faster response is not critical. |
Compared with LM2903QPWRQ1, LM2903BHQPWRQ1 delivers tighter offset and superior ESD for mission-critical detection; versus TLV1702QDRQ1, it trades rail-to-rail input for lower IQ and proven AEC-Q100 Grade 1 stability in harsh automotive transients.
Availability
LM2903BHQPWRQ1 is available at Aetrix Electronics and suitable for HEV/EV battery management, automotive body control modules, and infotainment power sequencing requiring stable component supply across extended production lifecycles.
Supply support for LM2903BHQPWRQ1 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 compliance, wide supply tolerance, and robustness in noisy, thermally demanding vehicle environments.
FAQ
What is the maximum supply voltage supported by the LM2903BHQPWRQ1?
The LM2903BHQPWRQ1 supports a maximum supply voltage of 36 V across its VCC-to-GND terminals. This rating is validated per Absolute Maximum Ratings in the official datasheet (Section 2.2), and applies to continuous operation within the recommended ambient temperature range of −40°C to +125°C. Exceeding 36 V risks permanent device damage.
Does the LM2903BHQPWRQ1 require dual supplies to operate?
No, the LM2903BHQPWRQ1 operates from a single supply ranging from 2 V to 36 V. Dual-supply operation is possible only if the difference between V+ and V− remains within 2 V to 36 V and V+ is at least 1.5 V more positive than the input common-mode voltage - but this configuration is rarely used. The LM2903BHQPWRQ1 is optimized for single-rail automotive systems.
Can the LM2903BHQPWRQ1 inputs safely go below ground?
Yes - the LM2903BHQPWRQ1 inputs tolerate voltages down to −0.3 V relative to GND, as specified in Section 2.2 Absolute Maximum Ratings. This allows direct interfacing with ground-referenced sensors and switches without clamping diodes. However, sustained operation below −0.3 V may cause latch-up or parametric degradation.
What is the typical propagation delay of the LM2903BHQPWRQ1 under standard conditions?
The LM2903BHQPWRQ1 exhibits a typical propagation delay of 1 µs when driven with a 5 mV input overdrive at 5 V supply, 25°C, and 15 pF load (Section 2.10). At full temperature range (−40°C to +125°C) and 36 V supply, delay increases to ≤1.3 µs - confirmed in switching characteristics tables and typical curves (Figures 2-25 to 2-30).
Is the LM2903BHQPWRQ1 pin-compatible with non-automotive LM2903 variants?
Yes - the LM2903BHQPWRQ1 shares identical pinout, footprint, and electrical behavior with industry-standard LM2903 variants in TSSOP-8 packaging (e.g., LM2903PWR, LM2903QPWR). Functional equivalence is maintained across supply range, input/output characteristics, and thermal design - enabling drop-in replacement where AEC-Q100 qualification is required.
LM2903BHQPWRQ1 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
- :
- 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-TSSOP
LM2903BHQPWRQ1 FAQ
1.How can I place an order for LM2903BHQPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2903BHQPWRQ1 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 LM2903BHQPWRQ1 reliable?
The price and inventory of LM2903BHQPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2903BHQPWRQ1 is usually 5 days.
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4.How is shipping managed for LM2903BHQPWRQ1?
LM2903BHQPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2903BHQPWRQ1 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 LM2903BHQPWRQ1?
For technical support, including LM2903BHQPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2903BHQPWRQ1 requirements.
6.How does Aetrix verify that LM2903BHQPWRQ1 is sourced from the original manufacturer or authorized distributors?
All LM2903BHQPWRQ1 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 LM2903BHQPWRQ1 meets industry standards.
7.What is the process for return or replacement of LM2903BHQPWRQ1?
All LM2903BHQPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM2903BHQPWRQ1, 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 LM2903BHQPWRQ1 part is unused and in its original packaging.
Return procedure for LM2903BHQPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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