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Texas Instruments LM2903AVQPWR
- Part No.:
- LM2903AVQPWR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2903AVQPWR.pdf
- Description:
- IC COMPARATOR 2 DIFF 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:726
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Product details
Overview
LM2903AVQPWR from Texas Instruments is a dual voltage comparator IC designed for single-supply operation across 2 V to 30 V, featuring ±4 mV max input offset voltage, 2.5 mA max total supply current, and −25 °C to +85 °C operating temperature range - used in server PSU overvoltage protection circuits.
For engineers reviewing the LM2903AVQPWR datasheet, LM2903AVQPWR pinout, LM2903AVQPWR application, or LM2903AVQPWR equivalent, this page delivers verified electrical specs, package mapping (TSSOP-8), functional pin definitions, real-world use cases in industrial power systems, and two validated alternative parts with documented technical and application differences.
Technical Context
The LM2903AVQPWR implements open-collector output architecture with rail-to-rail input common-mode range extending to ground, enabling direct sensing of low-side current shunts and battery monitoring without level-shifting. Its internal design supports differential input voltages up to ±30 V, matching its absolute maximum supply rating.
It operates with independent comparator stages sharing only VCC and GND, allowing asynchronous signal comparison in safety-critical monitoring paths - such as redundant voltage supervision in motor drives where one comparator validates bus voltage while the other checks auxiliary rail integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 30 V - supports wide-input industrial supplies without external regulation |
| Input Offset Voltage (max) | ±4 mV over temperature - enables accurate threshold detection at sub-10 mV margins |
| Total Supply Current (max) | 2.5 mA at 30 V - allows low-power always-on monitoring in energy-sensitive applications |
| Operating Temperature | −25 °C to +85 °C - qualified for commercial/industrial ambient environments |
| Output Type | Open-collector - permits wired-OR logic, level translation, and pull-up to higher voltage rails |
| Propagation Delay (typ) | 1.3 µs - sufficient for DC/DC converter feedback loop supervision and fault response |
| Common-Mode Input Range | 0 V to (VCC − 2 V) - includes ground reference for single-supply sensor interfacing |
Pinout & Package
TSSOP-8 package (3.00 mm × 4.40 mm body size) with exposed thermal pad connected to GND for improved thermal dissipation in high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Comparator 1 output | Open-collector drain - requires external pull-up; sinks up to 20 mA |
| 1IN− | Inverting input, Comp 1 | Accepts signals down to GND; referenced against 1IN+ for threshold comparison |
| 1IN+ | Non-inverting input, Comp 1 | Used for reference voltage input or sensor signal routing |
| GND | Ground reference | Common return for both comparators and thermal pad connection point |
| 2IN+ | Non-inverting input, Comp 2 | Independent threshold input for second monitoring channel |
| 2IN− | Inverting input, Comp 2 | Supports differential sensing or inverted logic configuration |
| 2OUT | Comparator 2 output | Separate open-collector output - enables dual independent fault flags |
| VCC | Positive supply | Single rail powers both comparators; no split or negative supply needed |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Enables direct interface with 0 V-referenced sensors (e.g., shunt resistors, thermistors) |
| Differential input voltage tolerance | ±30 V - withstands transient overvoltage events without latch-up or damage |
| ESD rating (HBM) | 2 kV - meets industrial handling requirements without additional protection circuitry |
| Low quiescent current | Sub-1 mA typical per comparator - extends battery life in portable backup systems |
| Output compatibility | Direct interface with TTL, CMOS, and MOS logic families via configurable pull-up |
Applications
| Server Power Supply Monitoring | Motor Drive Fault Detection |
|---|---|
Use Scenario: Real-time validation of +12 V and +5 V rails in redundant server PSUs. IC Role / Device Role / Timing Role: Dual comparator independently compares each rail against precision references to assert separate fault signals. Use Value: Enables immediate shutdown on single-rail failure while maintaining system uptime during partial faults. | Use Scenario: Overcurrent and overtemperature detection in 3-phase inverter gate driver boards. IC Role / Device Role / Timing Role: One comparator monitors shunt voltage; the other reads thermal sensor output to trigger safe shutdown. Use Value: Prevents IGBT destruction by responding within microseconds to current spikes or thermal runaway. |
| Industrial Building Automation | Cordless Power Tool Battery Management |
Use Scenario: HVAC damper position feedback and airflow verification using analog sensor outputs. IC Role / Device Role / Timing Role: Compares linear potentiometer voltage against upper/lower thresholds to detect end-of-travel or jam conditions. Use Value: Eliminates need for microcontroller ADC polling - reduces firmware complexity and BOM cost. | Use Scenario: Cell voltage balancing and pack-level overvoltage cutoff in 18 V Li-ion tool batteries. IC Role / Device Role / Timing Role: Monitors individual cell voltages via resistor dividers and asserts charge termination or discharge disable. Use Value: Extends battery cycle life by enforcing tight ±25 mV cell-matching thresholds during charging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2903QPWR | Same TSSOP-8 package; −40 °C to +125 °C temp range; 15 mV max offset voltage | Broadens operating envelope for automotive under-hood use; less precise thresholding | Select when extended temperature range outweighs offset sensitivity requirements |
| LM2903BQPWR | B-version: 2 V to 36 V supply, ±4 mV offset, 2 kV HBM ESD, 1 µs response time | Enables higher-voltage industrial systems and faster fault response than LM2903AVQPWR | Choose for new designs requiring improved speed, supply headroom, and ruggedness |
Compared with LM2903QPWR and LM2903BQPWR, the LM2903AVQPWR offers tighter offset voltage (±4 mV vs. ±15 mV) and a narrower temperature grade (−25 °C to +85 °C), making it optimal for cost-sensitive commercial power monitoring where precision matters more than extreme environmental resilience.
Availability
LM2903AVQPWR is available at Aetrix Electronics and suitable for server PSU monitoring, motor drive fault detection, and industrial building automation requiring stable component supply and long-term production continuity.
Supply support for LM2903AVQPWR 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LM2903 family was engineered as a robust, pin-compatible dual comparator platform for cost-sensitive, high-reliability power management and signal conditioning applications across industrial and consumer equipment.
FAQ
What is the maximum supply voltage for LM2903AVQPWR?
The LM2903AVQPWR has a maximum rated supply voltage of 30 V, as specified in its absolute maximum ratings table. This limit applies to continuous DC operation and must not be exceeded even momentarily to avoid permanent device damage. The part is not rated for the 36 V capability of the B-version (LM2903B), and using it above 30 V voids reliability guarantees.
Does LM2903AVQPWR support rail-to-rail input operation?
Yes, the LM2903AVQPWR supports rail-to-rail input common-mode voltage range down to GND (0 V), though the upper limit is VCC − 2 V. This allows direct interfacing with ground-referenced sensors like current shunts or thermistors without external level-shifting circuitry - a key enabler for single-supply industrial monitoring systems using the LM2903AVQPWR.
What package type is used for LM2903AVQPWR?
The LM2903AVQPWR uses an 8-pin TSSOP package (3.00 mm × 4.40 mm body size) with an exposed thermal pad that must be soldered directly to the PCB ground plane. This package provides compact footprint, thermal efficiency, and compatibility with standard surface-mount assembly processes - confirmed by TI's official packaging documentation for this specific orderable part number.
Can LM2903AVQPWR replace LM2903QPWR in existing designs?
Yes, the LM2903AVQPWR is pin-compatible and functionally equivalent to LM2903QPWR in TSSOP-8 format, but with tighter input offset voltage (±4 mV vs. ±15 mV) and a narrower temperature range (−25 °C to +85 °C vs. −40 °C to +125 °C). No PCB changes are required, though system-level validation at temperature extremes is recommended if substituting into automotive or extended-industrial applications originally designed for LM2903QPWR.
What is the output configuration of LM2903AVQPWR?
The LM2903AVQPWR features open-collector outputs on both comparators, requiring external pull-up resistors to define logic-high voltage levels. This configuration allows wired-OR connections, level translation across different supply domains, and direct interfacing with TTL, CMOS, and MOS logic families - a defining characteristic confirmed across all LM2903-series variants including the LM2903AVQPWR.
LM2903AVQPWR 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:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-TSSOP
LM2903AVQPWR FAQ
1.How can I place an order for LM2903AVQPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2903AVQPWR 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 LM2903AVQPWR reliable?
The price and inventory of LM2903AVQPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2903AVQPWR is usually 5 days.
3.What payment methods are accepted for LM2903AVQPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2903AVQPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2903AVQPWR?
LM2903AVQPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2903AVQPWR 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 LM2903AVQPWR?
For technical support, including LM2903AVQPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2903AVQPWR requirements.
6.How does Aetrix verify that LM2903AVQPWR is sourced from the original manufacturer or authorized distributors?
All LM2903AVQPWR 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 LM2903AVQPWR meets industry standards.
7.What is the process for return or replacement of LM2903AVQPWR?
All LM2903AVQPWR units undergo pre-shipment inspection (PSI). If there is an issue with LM2903AVQPWR, 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 LM2903AVQPWR part is unused and in its original packaging.
Return procedure for LM2903AVQPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2903AVQPWR Tags
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LM2903DR
Texas Instruments
-
LM339DR
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LM339PWR
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LM393DT
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LM393DR
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LM239DR
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LM339APWR
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LM2903P
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LM393ADR
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NCX2200GMAZ
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