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STMicroelectronics LM2903YPT
- Part No.:
- LM2903YPT
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2903YPT.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:112,986
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Product details
Overview
LM2903YPT from STMicroelectronics is an automotive-grade, low-power dual voltage comparator in TSSOP8 package, operating from +2 V to +36 V single supply (or ±1 V to ±18 V dual supply), with 25 nA typical input bias current, 250 mV typical low output saturation voltage at 4 mA sink, and input common-mode range extending to the negative rail. It enables robust zero-crossing detection and level sensing in engine control units and battery management systems.
For engineers reviewing the LM2903YPT datasheet, LM2903YPT pinout, LM2903YPT application, or LM2903YPT equivalent, this page delivers verified electrical specs, automotive-qualified thermal and ESD performance, TSSOP8 layout guidance, and real-world use cases including split-supply comparators and TTL/CMOS interface translation.
Technical Context
The LM2903YPT integrates two independent PNP-input comparators with rail-to-rail input common-mode range down to VCC− (including ground in single-supply mode), enabling direct sensing of signals referenced to system ground. Its open-collector outputs support wired-OR logic and level-shifting across logic families.
Designed for automotive environments, it meets AEC-Q100 Grade 1 qualification (−40 °C to +125 °C), features 800 V HBM ESD rating, and maintains stable response time (500 ns large-signal, 1.3 µs small-signal) across supply voltages from 5 V to 30 V with no load-dependent supply current drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2 V to +36 V single supply or ±1 V to ±18 V dual supply - supports wide-battery-range automotive systems (e.g., 12 V/24 V platforms) without external regulation. |
| Input Bias Current | 25 nA typ. - enables high-impedance sensor interfacing (e.g., thermistors, magnetic pickups) without significant signal loading. |
| Input Offset Voltage | 1–15 mV - ensures reliable threshold detection in precision level-shifters and window comparators. |
| Output Saturation Voltage | 250 mV typ. at 4 mA sink - guarantees strong logic-low assertion for driving TTL/CMOS inputs directly. |
| Response Time | 500 ns (large-signal), 1.3 µs (small-signal) - suitable for fast edge detection in motor phase monitoring and overvoltage latch circuits. |
| ESD Rating | 800 V HBM - meets automotive board-level robustness requirements per AEC-Q100 stress test conditions. |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood applications including engine control modules and transmission controllers. |
Pinout & Package
TSSOP8 (Thin Shrink Small Outline Package), 3.0 mm × 4.4 mm body, 0.65 mm pitch, exposed pad optional for thermal enhancement or grounding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Comparator 1 open-collector output | Sinks current to VCC−; requires external pull-up for logic-high; supports wired-OR configuration with other comparators. |
| 2 (IN1−) | Inverting input of comparator 1 | Accepts reference or feedback signal; common-mode range includes VCC−, enabling ground-referenced thresholds. |
| 3 (IN1+) | Non-inverting input of comparator 1 | Accepts sensed signal (e.g., battery voltage, sensor output); differential input range equals full supply voltage. |
| 4 (VCC−) | Negative supply / ground reference | Return path for both comparators; serves as common-mode lower bound and output sink reference. |
| 5 (VCC+) | Positive supply input | Power rail for both comparators; supplies internal bias circuitry and defines upper common-mode limit. |
| 6 (IN2+) | Non-inverting input of comparator 2 | Independent input channel for dual-threshold or complementary signal processing (e.g., window comparator). |
| 7 (IN2−) | Inverting input of comparator 2 | Paired with IN2+ for second comparison function; identical electrical characteristics to IN1±. |
| 8 (OUT2) | Comparator 2 open-collector output | Electrically isolated from OUT1; enables independent control of two loads (e.g., high/low-side fault indicators). |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends to VCC− (ground in single-supply mode), eliminating need for level-shifting resistors in ground-referenced sensor interfaces. |
| Low quiescent current | 0.4 mA total (0.2 mA/comparator at 5 V), enabling always-on monitoring in battery-powered automotive subsystems. |
| Logic-family compatible outputs | Open-collector outputs drive TTL, DTL, ECL, MOS, and CMOS loads directly via external pull-up, simplifying mixed-voltage system integration. |
| Wide supply flexibility | Operates from 2 V to 36 V single supply - supports start-stop systems, 12 V/48 V architectures, and legacy 24 V commercial vehicle platforms. |
| Automotive qualification | AEC-Q100 Grade 1 certified with 800 V HBM ESD and −40 °C to +125 °C operation - validated for engine control, ADAS power domains, and body electronics. |
Applications
| Engine Control Unit (ECU) Sensor Interface | Battery Management System (BMS) Voltage Monitoring |
|---|---|
|
Use Scenario: Detecting crankshaft position via magnetic pickup signal amplitude crossing programmable thresholds. IC Role / Device Role / Timing Role: Dual comparator implements zero-crossing detector and amplitude window comparator to reject noise and validate valid rotation events. Use Value: 25 nA input bias avoids loading high-impedance coil sensors; 500 ns response ensures accurate timing capture at >6000 RPM. |
Use Scenario: Monitoring individual cell voltages in 12S Li-ion packs to trigger overvoltage/undervoltage protection. IC Role / Device Role / Timing Role: One comparator compares cell voltage against upper threshold, the other against lower threshold - forming a latching window detector. Use Value: Input common-mode range to VCC− allows direct connection to bottom cell without level shifters; 250 mV output saturation ensures clean logic-low to microcontroller GPIO. |
| Automotive Lighting Control | Transmission Control Module (TCM) Fault Detection |
|
Use Scenario: Controlling LED headlamp brightness based on ambient light and ignition status using photodiode and reference voltage. IC Role / Device Role / Timing Role: Comparator 1 senses ambient light level; Comparator 2 validates ignition voltage presence - both outputs feed AND logic for enable gating. Use Value: 0.4 mA supply current minimizes parasitic drain during vehicle sleep mode; TSSOP8 footprint supports compact PCB layout near optical sensors. |
Use Scenario: Validating solenoid driver feedback signals for gear engagement confirmation in automatic transmissions. IC Role / Device Role / Timing Role: Compares sensed current sense amplifier output against expected high/low thresholds to detect open-circuit or short-circuit faults. Use Value: Differential input voltage range equal to supply voltage (±36 V) accommodates high-side current sense topologies; AEC-Q100 qualification ensures reliability in harsh transmission environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-power comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2903WDT | Higher ESD rating: 2 kV HBM vs. 800 V HBM; otherwise identical electrical specs and pinout. | Preferred for modules exposed to handling-intensive assembly lines or unshielded harness connectors where ESD risk exceeds automotive board-level limits. | Select when ESD robustness beyond AEC-Q100 baseline is required; same layout and firmware compatibility. |
| LM2903HPT | Extended temperature range: −40 °C to +150 °C vs. +125 °C; higher Rthja (120 °C/W vs. 120 °C/W TSSOP8) but same package. | Required for under-hood applications exceeding 125 °C ambient, such as turbocharger-mounted sensors or exhaust gas recirculation (EGR) control. | Choose only if junction temperature modeling confirms sustained >125 °C operation; otherwise LM2903YPT offers optimal cost/performance balance. |
Compared with LM2903WDT and LM2903HPT, the LM2903YPT provides the best trade-off of automotive qualification, thermal performance, and cost for mainstream ECU, BMS, and lighting control applications - delivering AEC-Q100 compliance without over-specifying ESD or temperature margins.
Availability
LM2903YPT is available at Aetrix Electronics and suitable for engine control units, battery management systems, and automotive lighting control requiring stable component supply across multi-year production cycles.
Supply support for LM2903YPT 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, MCU, power, and sensor solutions for automotive, industrial, and consumer markets.
The LM2903 product line delivers rugged, low-power comparators optimized for automotive electronics - emphasizing wide supply range, rail-to-rail input capability, and AEC-Q100 qualification to simplify design-in for safety-critical and harsh-environment applications.
FAQ
Is LM2903YPT pin-compatible with standard LM2903 variants in TSSOP8?
Yes, LM2903YPT shares identical TSSOP8 pinout, electrical characteristics, and functional behavior with non-automotive LM2903PT. The "Y" suffix denotes AEC-Q100 qualification and enhanced screening - no layout or schematic changes are needed for drop-in replacement in automotive designs.
Can LM2903YPT operate from a 3.3 V supply?
Yes, LM2903YPT operates down to +2 V single supply. At 3.3 V, it maintains full functionality: input common-mode range includes ground, output saturation remains ≤400 mV at 4 mA sink, and supply current stays at 0.4 mA - making it suitable for low-voltage automotive subsystems like infotainment power sequencing.
Does LM2903YPT require external pull-up resistors on its outputs?
Yes, both outputs are open-collector and require external pull-up resistors to VCC+ or another logic rail. Typical values range from 2.2 kΩ to 10 kΩ depending on speed and load capacitance; lower values improve rise time but increase quiescent current during logic-low states.
What is the maximum differential input voltage the LM2903YPT can withstand?
The absolute maximum differential input voltage is ±36 V, matching the supply voltage range. This allows safe operation even when one input is driven above VCC+ or below VCC− by up to 36 V - critical for fault-tolerant designs like CAN bus voltage supervisors or battery disconnect monitors.
LM2903YPT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- 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
- :
- 7mV @ 5V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 16mA @ 5V
- Current - Output (Typ):
- 2.5mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- 8-TSSOP
LM2903YPT FAQ
1.How can I place an order for LM2903YPT through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2903YPT 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 LM2903YPT reliable?
The price and inventory of LM2903YPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2903YPT is usually 5 days.
3.What payment methods are accepted for LM2903YPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2903YPT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2903YPT?
LM2903YPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2903YPT 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 LM2903YPT?
For technical support, including LM2903YPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2903YPT requirements.
6.How does Aetrix verify that LM2903YPT is sourced from the original manufacturer or authorized distributors?
All LM2903YPT 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 LM2903YPT meets industry standards.
7.What is the process for return or replacement of LM2903YPT?
All LM2903YPT units undergo pre-shipment inspection (PSI). If there is an issue with LM2903YPT, 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 LM2903YPT part is unused and in its original packaging.
Return procedure for LM2903YPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2903YPT Tags
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