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BL9161G-18BARN
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BL Shanghai Belling Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+47@@ -0,0 +1,47 @@+# BL9161G-18BARN++**BL Shanghai Belling** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5++BL9161G-18BARN from BL Shanghai Belling, in a SOT-23-5. 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 | VIN | power_in | Power input voltage. Operating range 2.2V to 6V (absolute max 6V). Bypass with a 1µF ceramic capacitor to GND placed close to the pin. |+| 2 | GND | power_in | Device ground reference for the regulator and internal control circuitry. |+| 3 | EN | input | Chip enable input, active high. Drive above VIH=1.2V to enable the regulator; pull below VIL=0.4V (or leave floating) to enter shutdown. This pin has an internal pull-down resistor (A-suffix ordering option), so the LDO defaults to shutdown when EN is left open. |+| 4 | NC | unconnected | No internal connection. Leave floating or tie to GND for mechanical strength. |+| 5 | VOUT | power_out | Regulated output voltage, fixed 1.8V ±2% (18B suffix). Delivers up to 300mA with 205mV typical dropout at 300mA. Requires a ≥2.2µF ceramic output capacitor for 1.8V-option stability (per application hint). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | BL Shanghai Belling |+| Package | SOT-23-5 |+| Category | PMIC |+| Pins | 5 |++## Ordering variants++- `BL9161G-18BARNRN`+- `BL9161G-18BARNURN`+- `BL9161G-18BARNDRN`+- `BL9161G-18BARNRT`++## CAD (KiCad official)++- Symbol: `BL9161G-18BARN`+- Footprint: `Package_TO_SOT_SMD:SOT-23-5`+- 3D model: SOT-23-5 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [BL Shanghai Belling datasheet](docs/bl9161g-18barn-datasheet.pdf) (12 pp, sha256 `74f47540de0b9365`, 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/bl9161g-18barn-datasheet.pdf)
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