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LM2903BIDSGR

TILM2903BIDSGR

Texas Instruments
Comparator Standard (General Purpose) Open-Collector, Rail-to-Rail 8-WSON (2x2)
Active17,300 in stock
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Overview

The LM2903BIDSGR is a high-performance, dual-channel general-purpose comparator designed for a wide supply voltage range from 2V to 36V. This 'B' version represents an upgraded industry standard, featuring lower offset voltage, higher reliability, and lower power consumption compared to the legacy LM2903. Its open-collector output allows for level shifting between different voltage domains, making it highly versatile for mixed-signal systems.

Why Choose This Part

It offers significant design flexibility with a wide common-mode input range that includes ground and a high maximum supply voltage of 36V. The 8-WSON package provides a tiny 2x2mm footprint, ideal for space-constrained industrial and consumer applications while maintaining a broad operating temperature range of -40C to 125C.

Applications

Overvoltage and Undervoltage Detection
Utilizing the dual channels to monitor supply rails against precise reference voltages for system protection.
Zero-Crossing Detectors
Detecting AC signal transitions for timing or phase control in power electronics.
Logic Level Shifting
Using the open-collector output to interface a low-voltage sensor with a high-voltage microcontroller input.
Square Wave Oscillators
Building simple clock sources or PWM generators with minimal external passive components.

Key Specifications

Type Standard (General Purpose)
Output Type Open-Collector, Rail-to-Rail
Mounting Type Surface Mount
Package / Case 8-WFDFN Exposed Pad
Number of Elements 2
Operating Temperature -40degC ~ 125degC
Current - Output (Typ) 21mA @ 5V
Propagation Delay (Max) 1us (Typ)
Supplier Device Package 8-WSON (2x2)
Current - Quiescent (Max) 600uA
Current - Input Bias (Max) 0.025uA @ 5V
Voltage - Input Offset (Max) 2.5mV @ 36V
Voltage - Supply, Single/Dual (+/-) 3V ~ 36V, +/-1.5V ~ 18V

Getting Started

To evaluate this component, use the 0.5mm pitch WSON-8 footprint in your PCB layout with a 0.1uF bypass capacitor placed close to the VCC pin. Ensure an appropriate pull-up resistor is selected for the open-collector output based on your target logic level and required rise time.

Part of LM Comparators family » LM2903

LM2903 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Output Type Temp Range Current - Output (Typ) Current - Quiescent (Max) Current - Input Bias (Max) Stock
LM2903BIDSGR (this part) WFDFN-8 Open-Collector, Ra.. -40degC ~ 125degC 21mA 600uA 0.025uA 17,300
LM2903DMR2G (onsemi) TSSOP-8 Open-Collector, Ra.. -40degC ~ 105degC 16mA 2.5mA 0.25uA 16,228
LM2903FVT-E2 (Rohm Semiconductor) TSSOP-8 Open-Collector -40degC ~ 125degC 16mA 1mA 0.25uA 7,865
LM2903AVQPWRG4Q1 TSSOP-8 Open-Collector, Ra.. -40degC ~ 125degC 20mA 2.5mA 0.25uA 4,519
LM2903VDR2G (onsemi) SOIC-8 Open-Collector, Ra.. -40degC ~ 125degC 16mA 2.5mA 0.25uA 2,303
LM2903YPT (STMicroelectronics) TSSOP-8 Open-Collector, Ra.. -40degC ~ 125degC 16mA 2.5mA 0.25uA 99,631
LM2903DGKR TSSOP-8 Open-Collector, Ra.. -40degC ~ 125degC 20mA 2.5mA 0.25uA 46,953
LM2903BQPWRQ1 TSSOP-8 Open-Collector, Ra.. -40degC ~ 125degC 21mA 600uA 0.025uA 7,138
LM2903AVQDRQ1 SOIC-8 Open-Collector, Ra.. -40degC ~ 125degC 20mA 2.5mA 0.25uA 17,764
LM2903VQPWRQ1 TSSOP-8 Open-Collector, Ra.. -40degC ~ 125degC 20mA 2.5mA 0.25uA 2,109

Also Consider

LM393B TITexas Instruments - An identical dual comparator in a larger TSSOP-8 package for easier manual prototyping or different thermal requirements.
TLV1702 TITexas Instruments - A micro-power alternative for battery-operated devices requiring much lower quiescent current than the LM2903B.