component
BL1084-CS
Public Made by Adomby adom
BL(Shanghai Belling) Linear Voltage Regulators (LDO), TO-263-2L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownBL1084-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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bl1084-cs.step/bl1084-cs.glbare 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, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).