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BL1084-CS

Public Made by Adom

by adom

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

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BL1084-CS

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

BL1084-CS from BL(Shanghai Belling), in a TO-263-2L. 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 Adj. input Adjustable-version adjust pin: the output is set with two external resistors (Vout = VRef×(1+R2/R1)+IAdj×R2), VRef is 1.25V (1.225V to 1.275V), and IAdj is 45µA typ and 120µA max.
2 Vout power_out Regulated output: up to 5A, with 1.4V typ and 1.6V max dropout at 5A, 7A typ current limit, and a recommended 22µF tantalum output capacitor to GND.
3 Vin power_in Input supply, 15V maximum, with a recommended 10µF tantalum capacitor to GND.

Key specifications

Parameter Value
Manufacturer BL(Shanghai Belling)
Package TO-263-2L
Category Power Supply Chip
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
Reference Voltage Vref 1.225 1.25 1.275 V 10mA≤Iout≤5A ,1.5V≤Vin-Vout≤5V; Tj=25℃ 3
Line Regulation (ADJ) ΔVout 10 40 mV Iout=10mA, 2.85V≤Vin≤10V 3
Load Regulation (ADJ) ΔVout 16 50 mV ADJ connected to ground, Vin-Vout=1.6V, 10mA≤Iout≤5A 3
Dropout Voltage Vin-Vout 1.4 1.6 V ΔVout, ΔVref =1%, Iout=5A 4
Minimum Load Current (ADJ) 3 10 mA BL1084-ADJ 4
Quiescent Current Iq 5 10 mA Vin=10V 4
Adjust Pin Current IAdj 45 120 uA 2.85V ≤Vin≤4.25V, 10mA≤ Iout≤5A 4
Ripple Rejection 60 65 dB F=120Hz,Cout=25uF(tan), Iout=5A,Vin-Vout=3V 4
Adjust Pin Current Change Ichange 0.4 10 µA 10mA≤Iout≤5A, 1.5V≤Vin-Vout ≤6V 4
Maximum Input Voltage 15 V 2
Operating Junction Temperature (abs max) Tj 150 C 2
Ambient Temperature Ta -40 85 C 2
Storage Temperature Ts -40 150 C printed '-40C -150C' 2
Lead Temperature 260 C 10S 2
Input Voltage Range 15 V Max.15V 2
Operating Junction Temperature Tj -10 125 C 2
Thermal Resistance Junction to Case TO-263 θJC 3 ℃ / W TO-263 4
Package Thermal Resistance TO-263 3 ℃ / W TO-263 2
Current Limit Ilimit 7 A Vin-Vout=3V, Tj=25℃ 4
Temperature Stability 0.5 % Iout=10mA, Vin-Vout=1.5V 4
Over Temperature Protection OTP 150 ℃ 4

CAD (KiCad official)

  • Symbol: BL1084-CS
  • Footprint: Package_TO_SOT_SMD:TO-263-2
  • 3D model: TO-263-2L (KiCad packages3D, STEP)
  • 3D model files: bl1084-cs-etched.step / bl1084-cs-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bl1084-cs.step / bl1084-cs.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 79bcc77d55e58efc, retrieved 2026-10-23, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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