component

BL8558-25PRN

Public Made by Adom

by adom

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

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BL8558-25PRN

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

BL8558-25PRN 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; recommended input range is up to 8V (absolute maximum 10V), with a 1uF input capacitor recommended.
2 Vss power_in Ground pin.
3 CE input Chip enable pin; high level is 1.5V to Vin, low level is 0 to 0.25V (standby), with an internal pull-down resistance of 2.0 to 10.0 MΩ (typ. 5.0 MΩ).
4 NC unconnected No connection.
5 Vout power_out Regulated output pin (2.5V for the BL8558-25PRN, ±2% accuracy), up to 500mA, with a 3.3uF/4.7uF output capacitor recommended for stability.

Key specifications

Parameter Value
Manufacturer BL(Shanghai Belling)
Package SOT-23-5
Category Power Supply Chip
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
Input Voltage Vin 8 V 5
Maximum Output Current Iout (Max.) 500 mA Vin-Vout=1V 5
Dropout Voltage Vdrop1 88 120 mV Vout≥2.8V, Iout=100mA 6
Dropout Voltage Vdrop1 270 350 mV Vout≥2.8V, Iout=300mA 6
Dropout Voltage Vdrop1 460 600 mV Vout≥2.8V, Iout=500mA 6
Line Regulation ΔVout/(ΔVin·Vout) 0.05 0.2 %/V Iout=40mA, 2.8V≤Vin≤8V 6
Load Regulation ΔVout/ΔIout 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
CE Pull down Resistance Rpd 2 5 10 MΩ 6
CE Input Voltage H Vceh 1.5 V max Vin 6
CE Input Voltage L Vcel 0.25 V min 0 6
Output Voltage Temperature Coefficient ΔVout/(ΔT·Vout) 100 ppm/°C Iout=30mA, printed ±100 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
Output Noise en 47 uVrms BW=10Hz~100kHz 6
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 8 V 5
Ambient Temperature -40 85 °C 5

CAD (KiCad official)

  • Symbol: BL8558-25PRN
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: bl8558-25prn-etched.step / bl8558-25prn-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bl8558-25prn.step / bl8558-25prn.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 df6d8294f239f8d4, retrieved 2026-10-23, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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