Product overview
Description
This device consists of two independent low-power voltage comparators designed specifically to operate from a single supply over a wide range of voltages. Operation from split power supplies is also possible.
In addition, the device has a unique characteristic in that the input common-mode voltage range includes the negative rail even though operated from a single power supply voltage.
-
All features
- Wide single supply voltage range or dual supplies +2 V to +36 V or ±1 V to ±18 V
- Very low supply current (0.4 mA) independent of supply voltage (1 mW/comparator at +5 V)
- Low input bias current: 25 nA typ.
- Low input offset current: ±5 nA typ.
- Input common-mode voltage range includes negative rail
- Low output saturation voltage: 250 mV typ. (IO= 4 mA)
- Differential input voltage range equal to the supply voltage
- TTL, DTL, ECL, MOS, CMOS compatible outputs
- Automotive qualification
- Related products
- See LM2903W for similar device with higher ESD performances
- See LM2903H for similar device with operating temperature up to 150 °C
eDesignSuite
eDesignSuite is a comprehensive set of easy-to-use design-aid utilities ready to help you streamline the system development process with a wide range of ST products.
Power Management Design Center
Thermal-electrical Simulators for Components
Signal Conditioning Design Tool
NFC/RFID Calculators
Choose design tool: 
Power Management Design Center
Power Supply Design Tool
• SMPS design, by topology, by type and by product
• PFC design with analog and digitial control
• Supports various PCB configurations
Choose type: DC/DC AC/DC Solar Battery Charger
Power Management Design Center
LED Lighting Design Tool
• Handles AC-DC and DC-DC design in common topologies
• Displays interactive and annotated schematic
• Provides current/voltage graphs, Bode plots, efficiency curves and power-loss data
Choose type: DC/DC AC/DC
Power Management Design Center
Digital Power Workbench
• Provides a step-by-step optimized design of power section and control loop
• Generates the STM32Cube embedded software package for custom applications and allows firmware project generation, compatible with multiple STM32 IDEs
Power Management Design Center
Power Tree Designer
• Specify input/output power for each node in the tree
• Check for consistency
• Design each individual node
Choose design tool: 
Thermal-electrical Simulators for Components
STPOWER Studio
• Supports long mission profiles
• Provides power loss and temperature graphs
• Helps define heatsink thermal properties
Thermal-electrical Simulators for Components
PCB Thermal Simulator
• Thermal analysis of a PCB from Gerber files.
• Possibility to add heat sources, heat sinks, copper areas and thermal paths.
• Powerful server-side engine for rendering and simulation.
• Thermal results shown graphically via 2D table.
Thermal-electrical Simulators for Components
AC Switches Simulator
• Select ratings and application waveforms
• Get junction temperature and blocking voltage graphs
• Search and sort suitable devices
Thermal-electrical Simulators for Components
Rectifier Diodes Simulator
• Select ratings and application waveforms
• Estimate power losses
• Search and sort suitable devices
Thermal-electrical Simulators for Components
Twister Sim
• Help select the right ViPOWER Automotive power device
• Supports load-compatibility, wiring harness optimization, fault condition impact and diagnostic analysis
• Supports various PCB configurations
Thermal-electrical Simulators for Components
TVS Simulator
• Specify system ratings and surge waveform
• Search and sort suitable devices
Thermal-electrical Simulators for Components
Estimate
• Build simple schematics and firmware inputs in minutes
• Quickly generate reliable estimates of battery life, system power consumption and bill of materials costs
Choose design tool: 
Signal Conditioning Design Tool
Active Filters
• Handles multi-stage-designs and common topologies
• Returns circuit component values
• Provides gain, phase and group delay graphs
• Low Pass, High Pass and Band Pass
Signal Conditioning Design Tool
Comparators
• Handles most common configurations
• Returns circuit components values
• Provides I/O signal waveforms
• Inverting, Non Inverting, Window
Signal Conditioning Design Tool
Low side Current Sensing
• Returns circuit component values
• Provides current error graphs
Signal Conditioning Design Tool
High side Current Sensing
• Provides current error graphs.
• Help to select the right High side current sensing and shunt devices.
Choose design tool: 
NFC/RFID Calculators
NFC Inductance
• Input geometry and substrate properties
• Get antenna impedance
NFC/RFID Calculators
UHF Link Budget
• Enter forward and reverse link characteristics
• The tool returns link budget estimate
NFC/RFID Calculators
NFC Tuning Circuit
• Enter antenna parameter and matching target
• Select the topology of the matching network
• The tool returns component values for the desired design targets
Recommended for you
EDA Symbols, Footprints and 3D Models
STMicroelectronics - LM2903
Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.
Please select one model supplier :
Symbols
Footprints
3D models
All resources
| Resource title | Version | Latest update | Actions | Details | Download |
|---|
SPICE models (1)
| Resource title | Version | Latest update | Actions | Options | ||
|---|---|---|---|---|---|---|
| ZIP | 2.0 | 01 Aug 2015 | 01 Aug 2015 |
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| LM2903DT | Active Product is in volume production. | SO-8 | Industrial | Ecopack3 | 10 | 2023-05-23T00:00:00.000+02:00 | |
| LM2903PT | Active Product is in volume production. | TSSOP-8L | Industrial | Ecopack3 | 10 | 2023-05-23T00:00:00.000+02:00 | |
| LM2903Q2T | Active Product is in volume production. | DFN8 2x2 | Industrial | Ecopack3 | 10 | 2023-05-23T00:00:00.000+02:00 | |
| LM2903Q3T | Active Product is in volume production. | WDFPN 2X2X0.8 8 P 0.5 NON-WET FL | Industrial | Ecopack3 | 10 | 2023-05-23T00:00:00.000+02:00 | |
| LM2903ST | Active Product is in volume production. | MiniSO-8 | Industrial | Ecopack3 | 10 | 2023-05-23T00:00:00.000+02:00 | |
| LM2903YDT | Active Product is in volume production. | SO-8 | Automotive | Ecopack3 | 10 | 2023-05-23T00:00:00.000+02:00 | |
| LM2903YPT | Active Product is in volume production. | TSSOP-8L | Automotive | Ecopack3 | 10 | 2023-05-23T00:00:00.000+02:00 | |
| LM2903YQ3T | Active Product is in volume production. | DFN8 2x2 WF | Automotive | Ecopack3 | 10 | 2023-05-23T00:00:00.000+02:00 | |
| LM2903YST | Active Product is in volume production. | MiniSO-8 | Automotive | Ecopack3 | 10 | 2023-05-23T00:00:00.000+02:00 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Thank you for your interest in our Partner's solution!
You’re now leaving st.com and will be re-directed to our Partner’s website.
For the latest innovations and solutions from ST, sign up for our newsletters.
Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | Grade | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | ||||||||||||||
| LM2903YPT | | | distributors No availability of distributors reported, please contact our sales office |
| |||||||||||
| LM2903YDT | | | distributors No availability of distributors reported, please contact our sales office |
| |||||||||||
| LM2903YST | | | distributors No availability of distributors reported, please contact our sales office |
| |||||||||||
| LM2903DT | | | distributors No availability of distributors reported, please contact our sales office |
| |||||||||||
| LM2903ST | | | distributors No availability of distributors reported, please contact our sales office |
| |||||||||||
| LM2903YQ3T | | | distributors No availability of distributors reported, please contact our sales office |
| |||||||||||
| LM2903Q2T | | | distributors No availability of distributors reported, please contact our sales office |
| |||||||||||
| LM2903PT | | | distributors No availability of distributors reported, please contact our sales office |
| |||||||||||
| LM2903Q3T | | | distributors No availability of distributors reported, please contact our sales office |
| |||||||||||
LM2903YPT Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
LM2903YDT Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
LM2903YST Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
LM2903DT Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
LM2903ST Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
LM2903YQ3T Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
LM2903Q2T Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
LM2903PT Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
LM2903Q3T Active
Budgetary Price (US$)*/Qty:
-
distributors
No availability of distributors reported, please contact our sales office
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors