component

COS4421SR

Public Made by Adom

by adom

COSINE Gate Drive ICs, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower supply chipcos4421srfactory-2.0.0extractor-text

Verified COS4421SR

by Ray · last 4 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

4 Nov 2026RayPublished by the parts factory: tier lcsc, 8 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: COS4421SR · SOP-8 · 8 pins
  • ✓copper: 8 copper pads, none touching another net
  • ✓datasheet: all 8 pin names found in the 7-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: SOIC-8_3.9x4.9mm_P1.27mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-76ult6h2/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 8 pins = 8 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 8 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ cos4421sr.kicad_sym✓ cos4421sr.kicad_mod✓ cos4421sr.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray
viewers cos4421sr: viewers · Ray
cos4421sr-etched.glb Publish 0.1.0 · Ray
cos4421sr-etched.step cos4421sr: factory component page (tier=lcsc) · Ray
cos4421sr-hero.glb cos4421sr: hero GLB from the etched model (keeps the MPN mark) · Ray
cos4421sr-hero.overlay.json Publish 0.1.0 · Ray
cos4421sr.glb Publish 0.1.0 · Ray
cos4421sr.kicad_mod Publish 0.1.0 · Ray
cos4421sr.kicad_sym Publish 0.1.0 · Ray
cos4421sr.lbr Publish 0.1.0 · Ray
cos4421sr.step Publish 0.1.0 · Ray
package.json Publish 0.1.0 · Ray
page.json Set visibility: public · Ray
README.md Publish 0.1.0 · Ray
verification.json Verified: Published by the parts factory: tier lcsc, 8 pins · Ray

COS4421SR

COSINE · Gate Drive ICs · SOP-8

COS4421SR from COSINE, in a SOP-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 VDD power_in Bias supply for the MOSFET driver, rated 4.5V to 25V with respect to the Ground pin, and should be bypassed with local ceramic capacitors (1.0 µF suggested).
2 INPUT input High-impedance TTL/CMOS compatible control input with 300 mV hysteresis between high and low thresholds, and the output is held LOW if the input is unbiased or floating.
3 NC unconnected No Connection; the pin has no internal connection.
4 GND power_in Ground is the device return pin and should have a low-impedance connection to the bias supply source return, as high peak current flows out of it when the capacitive load is discharged.
5 GND power_in Ground is the device return pin and should have a low-impedance connection to the bias supply source return, as high peak current flows out of it when the capacitive load is discharged.
6 OUTPUT output Low-impedance CMOS push-pull output with equal pull-up and pull-down strength, held LOW if the input is unbiased or floating.
7 OUTPUT output Low-impedance CMOS push-pull output with equal pull-up and pull-down strength, held LOW if the input is unbiased or floating.
8 VDD power_in Bias supply for the MOSFET driver, rated 4.5V to 25V with respect to the Ground pin, and should be bypassed with local ceramic capacitors (1.0 µF suggested).

Key specifications

Parameter Value
Manufacturer COSINE
Package SOP-8
Category Power Supply Chip
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
DC supply voltage Vs 28 V 4
Operating junction temperature -40 125 °C 4
Storage temperature -55 150 °C 4
Maximum input voltage -5 0.3 V Printed as GND-5 (min, 5 V below GND) and VDD+0.3 (max, 0.3 V above VDD) 4
DC Supply Voltage 4.5 25 V 4
Operating ambient temperature -40 125 °C 4
Operating Voltage Range VDD 4.5 25 V 5
Input Signal High Threshold VIH 1.6 V 5
Input Signal Low Threshold VIL 0.7 V 5
Input Signal High Current (inverting input) IIH 0.01 µA Inverting input, VINX=18V 5
Input Signal High Current (non-inverting input) IIH 88 125 µA Non-inverting input, VINX=18V 5
Input Signal Low Current (inverting input) IIL 88 125 µA Inverting input, VINX=0V 5
Input Signal Low Current (non-inverting input) IIL 0.01 µA Non-inverting input, VINX=0V 5
High Output Voltage VOH -0.025 V Printed as VDD, 0.025 V (offset from VDD); DC Test 5
Low Output Voltage VOL 0.025 V DC Test 5
Pull-Up Resistance ROH 0.83 Ω Source Current = 10mA 5
Pull-Down Resistance ROL 0.5 Ω Sink Current = -10mA 5
Peak Output Current IPK 9 A 10V ≤ VDD ≤ 18V 5
Power Supply Current ICC 0.85 mA VIN=3V 5
Power Supply Current ICC 0.65 mA VIN=0V 5
Under-Voltage Lockout ON Threshold 3.7 4.1 V 5
Under-Voltage Lockout Hysteresis 0.5 V 5
Input Signal Hysteresis VHYS 0.3 V 5
Rise Time tR 35 ns CL = 10,000 pF, See Figure 3 5
Fall Time tF 36 ns CL = 10,000 pF, See Figure 3 5
Turn-On Delay Time tD1 58 ns COS4421, CL = 10,000 pF 6
Turn-Off Delay Time tD2 59 ns COS4421, CL = 10,000 pF 6
Thermal Shutdown Threshold 150 °C 6
Thermal Shutdown Threshold Hysteresis 25 °C 6
Package Thermal Resistance 155 °C/W SOP8 package 4

CAD (KiCad official)

  • Symbol: COS4421SR
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: cos4421sr-etched.step / cos4421sr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cos4421sr.step / cos4421sr.glb are the bare package body.

Provenance

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

  • Datasheet: COSINE datasheet (7 pp, sha256 2485da00aa848fb7, retrieved 2026-11-04, 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