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BL8503-33PSM

Public Made by Adom

by adom

BL Shanghai Belling Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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BL8503-33PSM

BL Shanghai Belling · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3

BL8503-33PSM from BL Shanghai Belling, in a SOT-89-3. 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 Vss power_in Ground pin for the regulator, as listed in the pin description table for the SOT-89-3 (SM) column.
2 Vin power_in Supply voltage input, with an input voltage range of 1.5V to 10V in the features and a maximum input voltage of 10V in the absolute maximum ratings.
3 Vout power_out Regulated output voltage, with an output voltage range of 1.2V to 6.0V in 0.1V steps per the features list.

Key specifications

Parameter Value
Manufacturer BL Shanghai Belling
Package SOT-89-3
Category Power Management (PMIC)
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Output Voltage Vout 2.94 3 3.06 V 5
Maximum Output Current Iout(Max.) 250 mA Vin=4V,Vout>2.94V 5
Dropout Voltage (Input-Output Voltage Differential) Vin-Vout 170 300 mV Iout=100mA 5
Dropout Voltage (Input-Output Voltage Differential) Vin-Vout 320 500 mV Iout=200mA 5
Line Regulation 0.2 0.3 %/V Iout=40mA, 3.2V≤Vin≤8V 5
Load Regulation 20 40 mV Vin=4.0V, 1mA≤Iout≤100mA 6
Quiescent Current Iq 3 5 uA Vin=4V 6
Output Voltage Temperature Coefficient 50 ppm/C Iout=10mA 6
Input Voltage Vin 8 V 4
Input Voltage Range Vin 8 V 4
Ambient Temperature TA -40 125 C 4
Max Input Voltage 10 V 4
Junction Temperature TJ 125 C 4
Ambient Temperature TA -40 85 C 4
Power Dissipation 0.5 W SOT-89-3 package 4
Storage Temperature Ts -45 150 C 4
Lead Temperature 260 C 10S 4

CAD (KiCad official)

  • Symbol: BL8503-33PSM
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3 (KiCad packages3D, STEP)
  • 3D model files: bl8503-33psm-etched.step / bl8503-33psm-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bl8503-33psm.step / bl8503-33psm.glb are the bare package body.

Provenance

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

  • Datasheet: BL Shanghai Belling datasheet (13 pp, sha256 96cd8edb3cb3fa27, retrieved 2026-10-18, 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