component
BL8531CB5TR50
Public Made by Adomby adom
BL Shanghai Belling DC-DC Converters, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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BL8531CB5TR50
BL Shanghai Belling · DC-DC Converters · SOT-23-5
BL8531CB5TR50 from BL Shanghai Belling, in a SOT-23-5. 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 | CE | input | Chip enable, active high; CE high threshold is 0.8V max and low threshold 0.3V min, and the pin voltage is limited to -0.3V to (Vout+0.3V). |
| 2 | OUT | power_in | Output feedback pin and power supply for the internal circuitry, connected to the output filter capacitor. |
| 3 | NC | unconnected | No connection. |
| 4 | GND | power_in | Ground. |
| 5 | Lx | output | Switching pin connected to the inductor and Schottky diode, with a maximum output current of 0.7A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BL Shanghai Belling |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
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 | VOUT | 4.9 | 5 | 5.1 | V | 3 | |
| Input voltage range | 0.8 | V | 3 | ||||
| Inductor | 10 | 27 | 100 | μH | 3 | ||
| Input capacitor | 0 | 10 | μF | 3 | |||
| Output capacitor | 47 | 100 | 220 | μF | 3 | ||
| Ambient temperature | -40 | 85 | C | 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: 02V | 3 | |
| Hold-on voltage | VHOLD | 0.6 | 0.7 | V | IOUT=1mA, VIN: 20V | 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 | |
| Input voltage | VIN | 7 | V | 3 | |||
| CE high threshold voltage | VCEH | 0.8 | V | VCE: 02V | 3 | ||
| CE low threshold voltage | VCEL | 0.3 | V | VCE: 20V | 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 | -0.3 | 12 | V | 2 | |||
| Input voltage | -0.3 | V | 2 | ||||
| CE pin voltage | -0.3 | 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 | 250 | mW | SOT-23-5 | 2 | |||
| Storage temperature | TS | -40 | 150 | C | 2 | ||
| Lead temperature & time | 260 | C | 10S | 2 |
CAD (KiCad official)
- Symbol:
BL8531CB5TR50 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
bl8531cb5tr50-etched.step/bl8531cb5tr50-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bl8531cb5tr50.step/bl8531cb5tr50.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 2026-10-18, 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).
# BL8531CB5TR50
**BL Shanghai Belling** · DC-DC Converters · SOT-23-5
BL8531CB5TR50 from BL Shanghai Belling, in a SOT-23-5. 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 | CE | input | Chip enable, active high; CE high threshold is 0.8V max and low threshold 0.3V min, and the pin voltage is limited to -0.3V to (Vout+0.3V). |
| 2 | OUT | power_in | Output feedback pin and power supply for the internal circuitry, connected to the output filter capacitor. |
| 3 | NC | unconnected | No connection. |
| 4 | GND | power_in | Ground. |
| 5 | Lx | output | Switching pin connected to the inductor and Schottky diode, with a maximum output current of 0.7A. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BL Shanghai Belling |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
## 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 | VOUT | 4.9 | 5 | 5.1 | V | | 3 |
| Input voltage range | | 0.8 | | | V | | 3 |
| Inductor | | 10 | 27 | 100 | μH | | 3 |
| Input capacitor | | 0 | 10 | | μF | | 3 |
| Output capacitor | | 47 | 100 | 220 | μF | | 3 |
| Ambient temperature | | -40 | | 85 | C | | 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: 02V | 3 |
| Hold-on voltage | VHOLD | | 0.6 | 0.7 | V | IOUT=1mA, VIN: 20V | 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 |
| Input voltage | VIN | | | 7 | V | | 3 |
| CE high threshold voltage | VCEH | 0.8 | | | V | VCE: 02V | 3 |
| CE low threshold voltage | VCEL | | | 0.3 | V | VCE: 20V | 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 | | -0.3 | | 12 | V | | 2 |
| Input voltage | | -0.3 | | | V | | 2 |
| CE pin voltage | | -0.3 | | | 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 | | | | 250 | mW | SOT-23-5 | 2 |
| Storage temperature | TS | -40 | | 150 | C | | 2 |
| Lead temperature & time | | | | 260 | C | 10S | 2 |
## CAD (KiCad official)
- Symbol: `BL8531CB5TR50`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `bl8531cb5tr50-etched.step` / `bl8531cb5tr50-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bl8531cb5tr50.step` / `bl8531cb5tr50.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [BL Shanghai Belling datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590225790987509760) (11 pp, sha256 `f28e740a06541198`, retrieved 2026-10-18, 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](docs/bl8531cb5tr50-datasheet.pdf)