component

LR7533-M

Public Made by Adom

by adom

LR Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs lr7533-m: 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
lr7533-m-etched.fit.json lr7533-m: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
lr7533-m-etched.glb lr7533-m: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
lr7533-m-etched.step lr7533-m: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
lr7533-m.glb Publish 0.1.0 · Ray
lr7533-m.kicad_mod Publish 0.1.0 · Ray
lr7533-m.kicad_sym Publish 0.1.0 · Ray
lr7533-m.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
lr7533-m.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 lr7533-m: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray
README.md lr7533-m: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

LR7533-M

LR · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3

LR7533-M from LR, in a SOT-89-3. 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 VSS power_in Ground / common return for the regulator. All voltages are referenced to this pin. Also labeled GND in the block diagram.
2 VIN power_in Unregulated supply input. Accepts up to 24V continuously (32V abs max). A bypass capacitor should be connected between VIN and VSS, especially for high-impedance sources such as batteries.
3 VOUT power_out Regulated 3.3V output (±2%, VOUT×0.98 to VOUT×1.02). Delivers up to 100mA. Requires a 1-10uF output capacitor to VSS for stability and transient response. Internally short-circuit protected (Iscp ≈ 20mA, Iocp ≈ 120mA).

Key specifications

Parameter Value
Manufacturer LR
Package SOT-89-3
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • LR7533-M
  • LR7533-M-T

CAD (KiCad official)

  • Symbol: LR7533-M
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3 (KiCad packages3D, STEP)
  • 3D model files: lr7533-m-etched.step / lr7533-m-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lr7533-m.step / lr7533-m.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
lr7533-m.step 57 KB You want the bare part, or you mark your own boards.
lr7533-m-etched.step 1.1 MB You want the part with LR7533-M already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 313 faces against 42 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: LR datasheet (13 pp, sha256 0b58c65ef75e4ef4, 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