component

LM2903DR

Public Made by Adom

by adom

UMW Comparators, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs lm2903dr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
lm2903dr-etched.fit.json lm2903dr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
lm2903dr-etched.glb lm2903dr: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC body wi… · Ray
lm2903dr-etched.step lm2903dr: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC body wi… · Ray
lm2903dr.glb Publish 0.1.0 · Ray
lm2903dr.kicad_mod Publish 0.1.0 · Ray
lm2903dr.kicad_sym Publish 0.1.0 · Ray
lm2903dr.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
lm2903dr.step Publish 0.1.0 · Ray
package.json Publish 0.2.0 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json lm2903dr: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC body wi… · Ray
README.md lm2903dr: specified limits as data (metadata.characteristics, 28 rows from the datasheet) · Ray

LM2903DR

UMW · Comparators · SOP-8

LM2903DR from UMW, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 OUTA output Comparator A open-collector output. Requires an external pull-up resistor to VCC (or another supply). Can sink up to ~20 mA continuously; output saturation voltage typ 150 mV / max 400 mV at I_sink ≤ 4 mA.
2 INA- input Comparator A inverting input. Input bias current typ 25 nA (max 250 nA at 25 °C). Common-mode range extends from GND up to VCC−1.5 V. Absolute input voltage must remain ≥ −0.3 V of ground/V−.
3 INA+ input Comparator A non-inverting input. Same electrical characteristics as INA−: bias ~25 nA typ, common-mode range 0 V to VCC−1.5 V, differential input voltage range up to VCC.
4 GND power_in Negative supply / ground reference (V−). For single-supply operation tie to 0 V; for split-supply operation connect to the negative rail (down to −15 V relative to V+).
5 INB+ input Comparator B non-inverting input. Bias ~25 nA typ, common-mode range 0 V to VCC−1.5 V; must stay ≥ −0.3 V of V−.
6 INB- input Comparator B inverting input. Same electrical characteristics as the A-side inputs: bias ~25 nA typ, offset ±5 mV max, common-mode range 0 V to VCC−1.5 V.
7 OUTB output Comparator B open-collector output. Requires an external pull-up resistor. Sink current up to ~20 mA; V_OL typ 150 mV at 4 mA sink.
8 VCC power_in Positive supply. Single-supply range 2.0 V to 36 V, or +V rail of a split ±1.0 V to ±15 V supply. Absolute maximum 36 V (single) / ±18 V (split). Quiescent current typ 0.4 mA (1 mA max) with both comparators unloaded.

Key specifications

Parameter Value
Manufacturer UMW
Package SOP-8
Category Op-amp/Cmp
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • LM2903DR
  • LM2903DRPT
  • LM2903DRPWR

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Input Offset Voltage VIO -5 1 5 mV TA=25°C 3
Input Offset Voltage VIO 9 mV 0°C≤TA≤70°C 3
Input Offset Current IIO -50 5 50 nA TA=25°C 3
Input Offset Current IIO -150 150 nA 0°C≤TA≤70°C 3
Input Bias Current IIB 25 250 nA TA=25°C 3
Input Bias Current IIB 400 nA 0°C≤TA≤70°C 3
Input Common Mode Voltage Range VICR 0 V TA=25°C 3
Voltage Gain AVOL 50 200 V/mV RL≥15kΩ, VCC=15V, TA=25°C 3
Output Saturation Voltage VOL 150 400 mV Vin≥1.0V, Vin+=0V, ISink≤4.0mA, TA=25°C 3
Output Saturation Voltage VOL 700 mV Vin≥1.0V, Vin+=0V, ISink≤4.0mA, 0°C≤TA≤70°C 3
Output Sink Current ISink 6 16 mA Vin-=0V, Vin+≥1.0V, VO=5.0V, TA=25°C 3
Supply Current ICC 0.4 1 mA RL=∞ Both Comparators, TA=25°C 3
Supply Current ICC 1 2.5 mA RL=∞ Both Comparators, VCC=30V 3
Output Leakage Current IOL 0.1 1000 nA Vin-=0V, Vin+≥1.0V, VO=5.0V, TA=25°C 3
Large Signal Response Time tTLH 300 ns Vin=TTL, Logic Swing, Vref=1.4V 3
Response Time 1.3 µs VRL=5.0V, RL=5.1kΩ, TA=25°C 3
Power Supply Voltage VCC 36 V +36 or ±18 V (split supply) 2
Input Differential Voltage Range VIDR 36 V 2
Input Common Mode Voltage Range VICR -0.3 36 V 2
Output Sink Current ISink 20 mA 2
Power Dissipation PD 570 mW TA=25°C 2
Maximum Operating Junction Temperature TJ(max) 150 °C 2
Storage Temperature Range TSTG -65 150 °C 2
ESD Protection at any Pin, Human Body Model VESD 2000 V Human body model 2
ESD Protection at any Pin, Machine Model VESD 200 V Machine model 2
Operating Ambient Temperature Range TA -40 105 °C 2
Wide Single-Supply Range VCC 2 36 V Single supply (features) 1
Derating above 25°C 1/RθJA 5.7 mW/°C Derate above 25°C 2

CAD (KiCad official)

  • Symbol: LM2903DR
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: lm2903dr-etched.step / lm2903dr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm2903dr.step / lm2903dr.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
lm2903dr.step 122 KB You want the bare part, or you mark your own boards.
lm2903dr-etched.step 1.9 MB You want the part with LM2903DR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 472 faces against 147 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: UMW datasheet (11 pp, sha256 a1043fb752b1d7b1, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF