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BL8558-33PRN

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BL(Shanghai Belling) Linear Voltage Regulators (LDO), SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management icsbl8558-33prnfactory-2.0.0extractor-text

Verified BL8558-33PRN

by Ray · last 5 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

5 Nov 2026RayPublished by the parts factory: tier lcsc, 5 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: BL8558-33PRN · SOT-23-5 · 5 pins
  • ✓copper: 5 copper pads, none touching another net
  • ✓datasheet: all 5 pin names found in the 10-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: SOT-23-5
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-m14z72ju/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 5 pins = 5 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 5 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ bl8558-33prn.kicad_sym✓ bl8558-33prn.kicad_mod✓ bl8558-33prn.step
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Contents

README

markdown

BL8558-33PRN

BL(Shanghai Belling) · Linear Voltage Regulators (LDO) · SOT-23-5

BL8558-33PRN from BL(Shanghai Belling), in a SOT-23-5. 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 Vin power_in Input pin; the absolute maximum input voltage is 10V and the recommended input voltage range is up to 8V, with Vin at least Vout+1V for regulation.
2 Vss power_in Ground pin for the regulator, the common return for Vin and Vout.
3 CE input Chip enable pin; a logic high input of at least 1.5V enables the output and a logic low of at most 0.25V disables it, with an internal pull-down resistor of 2.0 to 10.0 MΩ (5.0 MΩ typical).
4 NC unconnected No connection pin on the SOT-23-5 A-type package.
5 Vout power_out Regulated output pin, which delivers up to 500mA with an output voltage of 3.3V for the BL8558-33 variant (±2%).

Key specifications

Parameter Value
Manufacturer BL(Shanghai Belling)
Package SOT-23-5
Category Power Management ICs
Pins 5

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 accuracy (multiplier of set Vout1) Vout 0.98 1.02 x Vout1 Vin=Set Vout+1V, 1mA≤Iout≤30mA 5
Dropout Voltage, Vout≥2.8V Vdrop1 88 120 mV Iout=100mA 6
Dropout Voltage, Vout≥2.8V Vdrop1 270 350 mV Iout=300mA 6
Dropout Voltage, Vout≥2.8V Vdrop1 460 600 mV Iout=500mA 6
Line Regulation 0.05 0.2 %/V Iout=40mA, 2.8V≤Vin≤8V 6
Load Regulation ∆Vout/∆Iout 20 40 mV Vin=Set Vout+1V, 1mA≤Iout≤500mA 6
Supply Current Iss 75 90 uA Vin=Set Vout+1V 6
Supply Current (Standby) Istandby 0.1 1 uA Vin=Set Vout+1V, Vce=GND 6
Output Voltage Temperature Coefficient -100 100 ppm/°C Iout=30mA 6
Ripple Rejection PSRR 65 dB F=100Hz, Ripple=0.5Vp-p, Vin=Set Vout+1V 6
Short Current Limit Ilim 200 mA Vout=0V 6
CE Pull down Resistance Rpd 2 5 10 MΩ 6
CE Input Voltage High Vceh 1.5 V 6
CE Input Voltage Low Vcel 0 0.25 V 6
Output Noise en 47 uVrms BW=10Hz~100kHz 6
Maximum Output Current Iout (Max.) 500 mA Vin-Vout=1V 5
Input Voltage Vin 8 V 5
Max input voltage 10 V 5
Junction Temperature TJ 125 °C 5
Output Current 500 mA 5
Power Dissipation SOT-23-5 250 mW SOT-23-5 5
Storage Temperature Ts -45 150 °C 5
Input Voltage Range (recommended) 8 V 5
Ambient Temperature (recommended) -40 85 °C 5

CAD (KiCad official)

  • Symbol: BL8558-33PRN
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: bl8558-33prn-etched.step / bl8558-33prn-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bl8558-33prn.step / bl8558-33prn.glb are the bare package body.

Provenance

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

  • Datasheet: BL(Shanghai Belling) datasheet (10 pp, sha256 f0394f1796a74855, retrieved 2026-11-05, 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