# BL8506-22NRM

**BL Shanghai Belling** · Supervisor and Reset ICs · SOT-23

BL8506-22NRM from BL Shanghai Belling, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VOUT | output | Voltage-detection output pin. N-channel open-drain, active-low: pulled low by the internal NMOS when VDD < VDET (2.2V nominal for -22 option); high-impedance otherwise (requires external pull-up resistor R0, typ 470kΩ). Max output voltage rating -0.3V to 12V, max output current 70mA. |
| 3 | VDD | power_in | Supply / sensed voltage input pin. Operating range 0.7V to 10V; absolute max -0.3V to 10V. Also the node whose voltage is compared against the internal 2.2V reference threshold. |
| 2 | VSS | power_in | Ground reference pin for the detector. Connect to system ground. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | BL Shanghai Belling |
| Package | SOT-23 |
| Category | PMIC |
| Pins | 3 |

## Ordering variants

- `BL8506-22NRM`
- `BL8506-22NRMCRM`
- `BL8506-22NRMNRN`
- `BL8506-22NRMCRN`
- `BL8506-22NRMNRO`
- `BL8506-22NRMCRO`
- `BL8506-22NRMNSM`
- `BL8506-22NRMCSM`
- `BL8506-22NRMNT`
- `BL8506-22NRMCT`

## CAD (KiCad official)

- Symbol: `BL8506-22NRM`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `bl8506-22nrm-etched.step` / `bl8506-22nrm-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bl8506-22nrm.step` / `bl8506-22nrm.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [BL Shanghai Belling datasheet](docs/bl8506-22nrm-datasheet.pdf) (19 pp, sha256 `7579ec6f6d30b5a6`, retrieved 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/bl8506-22nrm-datasheet.pdf)