component
BL8503-25PRM
Public Made by Adomby adom
BL Shanghai Belling Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-3L. Pinout extracted from the datasheet, 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
markdownBL8503-25PRM
BL Shanghai Belling · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-3L
BL8503-25PRM from BL Shanghai Belling, in a SOT-23-3L. 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 reference for the regulator. Connect to system ground. |
| 2 | Vout | power_out | Regulated output voltage (2.5V for BL8503-25PRM, factory-trimmed within +/-2%). Supplies up to 250mA. Requires a 1uF (tantalum recommended) output capacitor for loop stability. |
| 3 | Vin | power_in | Unregulated supply input. Operating range 1.5V-10V (recommended max 8V); requires at least Vout + dropout (~170mV @ 100mA, ~400mV @ 250mA). A 1uF (tantalum recommended) input capacitor is required. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BL Shanghai Belling |
| Package | SOT-23-3L |
| Category | PMIC |
| Pins | 3 |
Ordering variants
Same part, different packaging or reel option.
BL8503-25PRMBL8503-25PRMPSMBL8503-25PRMPSABL8503-25PRMPSBBL8503-25PRMPT
CAD (KiCad official)
- Symbol:
BL8503-25PRM - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3L (KiCad packages3D, STEP)
- 3D model files:
bl8503-25prm-etched.step/bl8503-25prm-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bl8503-25prm.step/bl8503-25prm.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BL Shanghai Belling datasheet (13 pp, sha256
8f6684221c2cf4c4, 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).