component

LM2903XK-Q1

Public Made by Adom

by adom

Jiangsu RUNIC Tech Comparators, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentamplifiers-comparatorslm2903xk-q1factory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity

3D Model

Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.

Symbol & Footprint

Schematic Symbol

Open full view ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.

PCB Footprint

Open full view ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.

Datasheet

Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Download PDF
Contents

README

markdown

LM2903XK-Q1

Jiangsu RUNIC Tech · Comparators · SOIC-8

LM2903XK-Q1 from Jiangsu RUNIC Tech, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 OUTA output Channel A open-drain output, which needs an external pull-up; the signal output pin is rated for ±55 mA and must not swing more than 0.3 V beyond the supply rails.
2 -INA input Channel A inverting input, which must stay between (V-) - 0.3 V and (V+) + 0.3 V, with input current limited to 10 mA if the signal swings beyond the rails.
3 +INA input Channel A noninverting input; the common-mode range is (V-) to (V+) - 1.5 V at 25°C and (V+) - 2.0 V over -40°C to +125°C, and the input must not go more than 0.3 V below (V-).
4 V- power_in Negative (lowest) power supply; the device runs from a single supply of 3.3 V to 32 V (VS = (V+) - (V-)) or a dual supply of ±1.65 V to ±16 V, with an absolute maximum of 36 V.
5 +INB input Channel B noninverting input; the common-mode range is (V-) to (V+) - 1.5 V at 25°C and (V+) - 2.0 V over -40°C to +125°C, and the input must not go more than 0.3 V below (V-).
6 -INB input Channel B inverting input, which must stay between (V-) - 0.3 V and (V+) + 0.3 V, with input current limited to 10 mA if the signal swings beyond the rails.
7 OUTB output Channel B open-drain output, which needs an external pull-up; the signal output pin is rated for ±55 mA and must not swing more than 0.3 V beyond the supply rails.
8 V+ power_in Positive (highest) power supply; the device runs from 3.3 V to 32 V single supply, with an absolute maximum supply of 36 V.

Key specifications

Parameter Value
Manufacturer Jiangsu RUNIC Tech
Package SOIC-8
Category Amplifiers/Comparators
Pins 8

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Supply voltage, VS=(V+)-(V-) VS 36 V 6
Signal input pin (IN+, IN-) current -10 10 mA 6
Signal output pin current -55 55 mA 6
Operating range, free-air temperature TA -40 125 °C 6
Junction temperature TJ -40 150 °C 6
Storage temperature Tstg -65 150 °C 6
Supply voltage, single-supply VS 3.3 32 V Single-supply 6
Supply voltage, dual-supply (per-rail magnitude, printed ±1.65 / ±16) VS 1.65 16 V Dual-supply 6
VS Operating Voltage Range VS 3.3 32 V 7
IQ Quiescent Current IQ 110 180 uA VS=5V, no load 7
IQ Quiescent Current IQ 250 uA VS=32V, no load, TA=-40C to +125C 7
Input offset voltage VOS -4.5 0.8 4.5 mV VS=5V to 32V 7
Input offset voltage VOS -5 5 mV VS=5V to 32V, TA=-40C to +125C 7
Input Bias Current IB 10 50 pA TA=25C 7
Input Bias Current IB 50 nA TA=-40C to +125C 7
Input Offset Current IOS 10 50 pA TA=25C 7
Input Offset Current IOS 50 nA TA=-40C to +125C 7
Large signal differential voltage amplification AVD 20 100 V/mV VS=15V, VO=1.4V to 11.4V, RL≥15k to (V+) 7
Low-Level output voltage VOL 200 350 mV Isink≤4mA, VID=-0.5V 7
Low-Level output voltage VOL 550 mV Isink≤4mA, VID=-0.5V, TA=-40C to +125C 7
Output Current (sinking) IOL 12 29 mA VO=2.5V; VID=-0.5V 7
High-Level Output Leakage Current IOH-LKG 15 80 nA (V+) =VO=5V; VID=0.5V 7
High-Level Output Leakage Current IOH-LKG 20 100 nA (V+) =VO=32V; VID=0.5V 7
Propagation Delay H To L TPHL 2.5 us VS=5V, RPU=5.1KΩ, Overdrive=10mV 7
Propagation Delay H To L TPHL 0.5 us VS=5V, RPU=5.1KΩ, Overdrive=100mV 7
Propagation Delay H To L TPHL 1.8 us VS=32V, RPU=5.1KΩ, Overdrive=10mV 7
Propagation Delay H To L TPHL 0.7 us VS=32V, RPU=5.1KΩ, Overdrive=100mV 7
Propagation Delay L To H TPLH 4.1 us VS=5V, RPU=5.1KΩ, Overdrive=10mV 7
Propagation Delay L To H TPLH 1.6 us VS=5V, RPU=5.1KΩ, Overdrive=100mV 7
Propagation Delay L To H TPLH 3.1 us VS=32V, RPU=5.1KΩ, Overdrive=10mV 7
Propagation Delay L To H TPLH 1.4 us VS=32V, RPU=5.1KΩ, Overdrive=100mV 7
Package thermal impedance, junction-to-ambient (SOIC-8(SOP8)) θJA 110.88 °C/W JESD-51, SOIC-8(SOP8) 6

CAD (KiCad official)

  • Symbol: LM2903XK-Q1
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: lm2903xk-q1-etched.step / lm2903xk-q1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm2903xk-q1.step / lm2903xk-q1.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Jiangsu RUNIC Tech datasheet (19 pp, sha256 ed9ceabe901837aa, retrieved 2026-10-19, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF