component
LR7550-T
Public Unreviewedby Ray
LR Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLR7550-T
LR · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23
LR7550-T from LR, in a SOT-23. 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 return / negative supply reference. All voltages are referenced to this pin. |
| 2 | VOUT | power_out | Regulated 5.0 V output (tolerance ±2%). Delivers up to 100 mA typical (150 mA absolute max). Requires an output capacitor (typ. 1 uF) for stability. |
| 3 | VIN | power_in | Unregulated input supply. Operating range up to 24 V (32 V absolute max). Requires an input capacitor (typ. 1 uF). Dropout ~390 mV @ 50 mA, ~750 mV @ 100 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LR |
| Package | SOT-23 |
| Category | PMIC |
| Pins | 3 |
Ordering variants
Same part, different packaging or reel option.
LR7550-TTLR7550-TM
CAD (KiCad official)
- Symbol:
LR7550-T - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
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).