CSA220LASOT235 from analogysemi, in a SOT-23-5. 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	GND	power_in	Device ground reference.
2	OUT	output	Analog output. Output voltage equals (RS+ − RS−) × Gain (10V/V for CSA220-10). VOH ≈ VDD − 15mV (500µA source), VOL ≈ 15mV (500µA sink).
3	VDD	power_in	Supply voltage input, 2.7V to 5.5V (3.3V nominal). Bypass with at least 100nF ceramic capacitor to GND.
4	RS-	input	Load-side connection of the external current-sense resistor (inverting input). Common-mode range 0V to 76V relative to GND; RS+ to RS− differential range ±80V (1s max).
5	RS+	input	Power-side connection of the external current-sense resistor (non-inverting input). Common-mode range 0V to 76V relative to GND.

Key specifications

Parameter	Value
Manufacturer	analogysemi
Package	SOT-23-5
Category	Op-amp/Cmp
Pins	5

Ordering variants

Same part, different packaging or reel option.

CSA220LASOT235
CSA220MASOT235
CSA220NASOT235
CSA220PASOT235

CAD (KiCad official)

Symbol: CSA220LASOT235
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`csa220lasot235.step`	85 KB	You want the bare part, or you mark your own boards.
`csa220lasot235-etched.step`	2.7 MB	You want the part with `CSA220LASOT235` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 643 faces against 102 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: analogysemi datasheet (13 pp, sha256 963c8a26e263d7bd, 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