component
BL1084-33CS
Public Made by Adomby adom
BL(Shanghai Belling) Linear Voltage Regulators (LDO), TO-263-2. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
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BL1084-33CS
BL(Shanghai Belling) · Linear Voltage Regulators (LDO) · TO-263-2
BL1084-33CS 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 3.3V regulator, with the operating junction temperature limited to -20C to 125C. |
| 2 | Vout | power_out | Regulated 3.3V output, rated for a maximum output current of 5A. |
| 3 | Vin | power_in | Input supply pin, with a maximum input voltage of 15V per the absolute maximum ratings. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BL(Shanghai Belling) |
| Package | TO-263-2 |
| 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 | 3 |
| Output Voltage BL1084-3.3V | VOUT | 3.25 | 3.3 | 3.35 | V | Iout=0mA,Vin=6.3V,Tj=25℃ | 3 |
| Output Voltage BL1084-3.3V | VOUT | 3.234 | 3.3 | 3.366 | V | 10mA ≤Iout≤5A ,4.9V≤Vin≤8V | 3 |
| Line Regulation BL1084-3.3V | ΔVout | 10 | 40 | mV | Iout=10mA, 4.9V≤Vin≤10V | 3 | |
| Load Regulation BL1084-3.3V | 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 | junction to case, TO-263 | 4 | ||
| Over Temperature Protection | OTP | 150 | ℃ | 4 | |||
| Max Input Voltage | 15 | V | 2 | ||||
| Operating Junction Temperature | Tj | 150 | ℃ | 2 | |||
| Ambient Temperature | Ta | -40 | -85 | ℃ | as printed -40C -85C | 2 | |
| Storage Temperature | Ts | -40 | -150 | ℃ | as printed -40C -150C | 2 | |
| Lead Temperature | 260 | ℃ | 10S | 2 | |||
| Thermal Resistance TO-263 | θJA | 3 | ℃ / W | Package thermal resistance, TO-263 | 2 | ||
| Input Voltage Range | Vin | 15 | V | Max.15V | 2 | ||
| Operating Junction Temperature | Tj | -20 | 125 | ℃ | 2 |
CAD (KiCad official)
- Symbol:
BL1084-33CS - Footprint:
Package_TO_SOT_SMD:TO-263-2 - 3D model: TO-263-2 (KiCad packages3D, STEP)
- 3D model files:
bl1084-33cs-etched.step/bl1084-33cs-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bl1084-33cs.step/bl1084-33cs.glbare 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 2026-10-27, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).