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BL9161G-28BARN
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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-28BARN++**BL Shanghai Belling** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5++BL9161G-28BARN 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 maximum -0.3V to +6V. Bypass with a >=1uF ceramic capacitor located within 0.5 inch of the pin. |+| 2 | GND | power_in | Device ground. Return input and output capacitor grounds to this pin via a clean analog ground plane. |+| 3 | EN | input | Chip enable. Active high with an internal pull-down resistor (suffix 'A' variant). Drive above VIH=1.2V to enable the LDO; below VIL=0.4V places the part in shutdown (ISTBY typ 0.01uA). Absolute max -0.3V to VIN. |+| 4 | NC | unconnected | No internal connection. Leave floating or tie to a convenient net; no functional effect. |+| 5 | VOUT | power_out | Regulated output voltage (2.8V fixed for -28 variant, ±2% accuracy, up to 300mA). Requires a >=1uF ceramic output capacitor (>=2.2uF for 1.2V/1.5V/1.8V variants) with ESR > 25 mOhm, placed within 0.5 inch of the pin. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | BL Shanghai Belling |+| Package | SOT-23-5 |+| Category | PMIC |+| Pins | 5 |++## Ordering variants++- `BL9161G-28BARN`+- `BL9161G-28BARNURN`+- `BL9161G-28BARNDRN`+- `BL9161G-28BARNRT`++## CAD (KiCad official)++- Symbol: `BL9161G-28BARN`+- 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-28barn-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-28barn-datasheet.pdf)
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