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BL1084-18CS

Public Made by Adom

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BL(Shanghai Belling) Linear Voltage Regulators (LDO), TO-263-2. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management icsbl1084-18csfactory-2.0.0extractor-text

Verified BL1084-18CS

by Ray · last 31 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

31 Oct 2026RayPublished by the parts factory: tier lcsc, 3 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: BL1084-18CS · TO-263-2 · 3 pins
  • ✓copper: 3 copper pads, none touching another net
  • ✓datasheet: all 3 pin names found in the 13-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: TO-263-2
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-9sz2jhzt/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: 3 pins = 3 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 3 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ bl1084-18cs.kicad_sym✓ bl1084-18cs.kicad_mod✓ bl1084-18cs.step
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Contents

README

markdown

BL1084-18CS

BL(Shanghai Belling) · Linear Voltage Regulators (LDO) · TO-263-2

BL1084-18CS from BL(Shanghai Belling), in a TO-263-2. 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 GND power_in Ground reference pin of the fixed 1.8V regulator, to which the input and output bypass capacitors return.
2 Vout power_out Regulated 1.8V output; a 22uF tantalum capacitor between output and GND is recommended for all applications.
3 Vin power_in Unregulated input supply, with a maximum input voltage of 15V; a 10uF tantalum bypass capacitor between input and GND is recommended.

Key specifications

Parameter Value
Manufacturer BL(Shanghai Belling)
Package TO-263-2
Category Power Management ICs
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 (BL1084-1.80V) Vout 1.773 1.8 1.827 V Iout=0mA, Vin=4.8V, Tj=25℃ 3
Output Voltage (BL1084-1.80V) Vout 1.764 1.8 1.836 V 10mA≤Iout≤5A, 3.4V≤Vin≤7V 3
Line Regulation (BL1084-1.8V) ΔVout 10 40 mV Iout=10mA, 3.4V≤Vin≤10V 3
Load Regulation (BL1084-1.8V) ΔVout 16 50 mV Vin-Vout=1.6V, 0≤Iout≤5A 3
Dropout Voltage Vin-Vout 1.4 1.6 V ΔVout, ΔVref =1%, Iout=5A 4
Current Limit Ilimit 7 A Vin-Vout=3V, Tj=25℃ 4
Quiescent Current Iq 5 10 mA Vin=10V 4
Ripple Rejection 60 65 dB F=120Hz, Cout=25uF(tan), Iout=5A, Vin-Vout=3V 4
Temperature Stability 0.5 % Iout=10mA, Vin-Vout=1.5V 4
Thermal Resistance junction to case (TO-263) θJC 3 ℃/W TO-263 4
Over Temperature Protection OTP 150 ℃ 4
Max Input Voltage 15 V 2
Operating Junction Temperature Tj 150 C 2
Ambient Temperature Ta -40 85 C 2
Package Thermal Resistance TO-263 3 ℃/W TO-263 2
Storage Temperature Ts -40 150 C 2
Lead Temperature & Time 260 C 10S 2
Input Voltage Range 15 V 2
Operating Junction Temperature Tj -20 125 C 2

CAD (KiCad official)

  • Symbol: BL1084-18CS
  • Footprint: Package_TO_SOT_SMD:TO-263-2
  • 3D model: TO-263-2 (KiCad packages3D, STEP)
  • 3D model files: bl1084-18cs-etched.step / bl1084-18cs-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bl1084-18cs.step / bl1084-18cs.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 bb5efe271c8036b3, retrieved 2026-10-31, 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