component
BL8531CC3TR60
Public Made by Adomby adom
BL(Shanghai Belling) DC-DC Converters, SOT-89-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownBL8531CC3TR60
BL(Shanghai Belling) · DC-DC Converters · SOT-89-3
BL8531CC3TR60 from BL(Shanghai Belling), in a SOT-89-3. 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 pin of the converter, returned to the negative battery terminal and output capacitor. |
| 2 | OUT | power_out | Output feedback pin that also supplies the internal circuitry, with output voltage factory-set from 2.5V to 6.0V in 0.1V steps. |
| 3 | Lx | output | Switching pin connecting the inductor and Schottky diode, with maximum Lx pin output current of 0.7A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BL(Shanghai Belling) |
| Package | SOT-89-3 |
| 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 (6.0V version) | VOUT | 5.88 | 6 | 6.12 | V | 3 | |
| Input voltage | VIN | 7 | V | 3 | |||
| Input current | IIN | 12 | 15 | uA | IOUT=0mA, VIN=VOUT*0.6 | 3 | |
| Start-up voltage | VSTART | 0.8 | 0.9 | V | IOUT=1mA, VIN: 0→2V | 3 | |
| Hold-on voltage | VHOLD | 0.6 | 0.7 | V | IOUT=1mA, VIN: 2→0V | 3 | |
| Quiescent current drawn from power source | IDD | 4 | 7 | uA | Without external components, VOUT=VOUT×1.05 | 3 | |
| Switch ON resistance | RSWON | 0.4 | 0.5 | Ω | 3 | ||
| LX leakage current | ILXLEAK | 0.5 | 5 | uA | VOUT=VLX=6V | 3 | |
| Oscillator duty cycle | MAXDTY | 70 | 75 | 80 | % | On (VLX L) side | 3 |
| Oscillator frequency | FOSC | 350 | KHz | LX on L side, VOUT=VOUT*0.96 | 3 | ||
| Efficiency | 85 | % | 3 | ||||
| Input voltage range (absolute maximum) | -0.3 | 12 | V | 2 | |||
| Lx pin output current | 0.7 | A | 2 | ||||
| Operating junction temperature | TJ | 125 | C | 2 | |||
| Ambient temperature | TA | -40 | 85 | C | 2 | ||
| Power dissipation SOT-89-3 | 500 | mW | SOT-89-3 | 2 | |||
| Storage temperature | TS | -40 | 150 | C | 2 | ||
| Lead temperature & time | 260 | C | 10S | 2 | |||
| Input voltage range (recommended) | 0.8 | 6 | V | Max printed as VOUT; 6.0V for this part | 3 | ||
| Inductor | 10 | 27 | 100 | μH | 3 | ||
| Input capacitor | 0 | 10 | μF | Recommended ≥10 | 3 | ||
| Output capacitor | 47 | 100 | 220 | μF | 3 | ||
| Ambient temperature (recommended) | -40 | 85 | C | 3 | |||
| Output voltage temperature-drift coefficient | 100 | ppm/℃ | less than 100ppm/℃ | 4 |
CAD (KiCad official)
- Symbol:
BL8531CC3TR60 - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
bl8531cc3tr60-etched.step/bl8531cc3tr60-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bl8531cc3tr60.step/bl8531cc3tr60.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BL(Shanghai Belling) datasheet (11 pp, sha256
f28e740a06541198, retrieved 2026-10-22, 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).