BL78L05D

@@ -0,0 +1,47 @@+# BL78L05D++**BL Shanghai Belling** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3++BL78L05D from BL Shanghai Belling, in a SOT-89-3. 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 | OUT | power_out | Regulated +5V output. Typical 5.0V (min 4.8V, max 5.2V) at Io = 1mA-70mA over 7V ≤ Vi ≤ Vmax. Maximum continuous output current 100mA. Requires ≥0.1µF ceramic bypass to GND close to the pin for stability. |+| 2 | GND | power_in | Ground/common reference for the regulator. Tie to system ground plane; internally connected to pins 3, 6, and 7 in the SOP8 package. |+| 3 | GND | power_in | Ground/common reference (internally tied to pins 2, 6, 7). Additional GND pins improve thermal dissipation via the PCB. |+| 4 | NC | unconnected | No internal connection. Leave floating or tie to GND; do not use as a signal node. |+| 5 | NC | unconnected | No internal connection. Leave floating or tie to GND; do not use as a signal node. |+| 6 | GND | power_in | Ground/common reference (internally tied to pins 2, 3, 7). Additional GND pins improve thermal dissipation via the PCB. |+| 7 | GND | power_in | Ground/common reference (internally tied to pins 2, 3, 6). Additional GND pins improve thermal dissipation via the PCB. |+| 8 | IN | power_in | Unregulated DC input. Absolute maximum 35V; recommended operating range approximately 7V to 20V (must be at least Vout + ~1.7V dropout). Requires ≥0.33µF bypass capacitor close to the pin for input stability. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | BL Shanghai Belling |+| Package | SOT-89-3 |+| Category | PMIC |+| Pins | 8 |++## Ordering variants++- `BL78L05DD`++## CAD (KiCad official)++- Symbol: `BL78L05D`+- Footprint: `Package_TO_SOT_SMD:SOT-89-3`+- 3D model: SOT-89-3 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [BL Shanghai Belling datasheet](docs/bl78l05d-datasheet.pdf) (3 pp, sha256 `158a1318d4cdbd85`, 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/bl78l05d-datasheet.pdf)

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