BL1118CS8TRAD33

@@ -0,0 +1,50 @@+# BL1118CS8TRAD33++**BL Shanghai Belling** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · ESOP-8-EP++BL1118CS8TRAD33 from BL Shanghai Belling, in a ESOP-8-EP. 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 | GND/ADJ | power_in | Channel 1 ground (fixed-output version) or adjust pin (adjustable version). In the adjustable configuration, this pin is tied to the resistor divider midpoint; the regulator forces 1.25V between Vout1 and this pin. Adjust-pin current is typically 55uA (max 120uA). |+| 2 | Vin1 | power_in | Channel 1 input supply. Operating range up to 12V max. Bypass with a 10uF input capacitor (tantalum, electrolytic, or MLCC) close to the pin. |+| 3 | GND/ADJ | power_in | Channel 2 ground (fixed-output version) or adjust pin (adjustable version). In the adjustable configuration this pin is the feedback node driven to 1.25V above the corresponding output. |+| 4 | Vin2 | power_in | Channel 2 input supply. Operating range up to 12V max. Bypass with a 10uF input capacitor close to the pin. Pin configuration is customizable on demand so both channels can share a single input. |+| 5 | Vout2 | power_out | Channel 2 regulated output. Tied together with pin 6 to share current up to 1A. Requires a 10uF output capacitor. |+| 6 | Vout2 | power_out | Channel 2 regulated output (paralleled with pin 5). Fixed at 1.2/1.8/2.5/3.3/5V per ordering code, or set by external divider on the ADJ variant. 1A maximum with typical 1.3V dropout. |+| 7 | Vout1 | power_out | Channel 1 regulated output (paralleled with pin 8). Requires a 10uF output capacitor. 1A maximum with typical 1.3V dropout. |+| 8 | Vout1 | power_out | Channel 1 regulated output (paralleled with pin 7). Fixed at 1.2/1.8/2.5/3.3/5V per ordering code, or set by external divider on the ADJ variant. |+| 9 | EP | power_in | Exposed thermal pad on the underside of the ESOP-8 package. Solder to a ground copper pour for heat dissipation; theta-JC = 10 C/W, theta-JA = 63 C/W. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | BL Shanghai Belling |+| Package | ESOP-8-EP |+| Category | PMIC |+| Pins | 9 |++## Ordering variants++- `BL1118CS8TRAD33`+- `BL1118CS8TRAD33CS8TR3333`+- `BL1118CS8TRAD33CS8TRADAD`++## CAD (KiCad official)++- Symbol: `BL1118CS8TRAD33`+- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm`+- 3D model: ESOP-8-EP (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [BL Shanghai Belling datasheet](docs/bl1118cs8trad33-datasheet.pdf) (8 pp, sha256 `85526dbc6c09a729`, 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/bl1118cs8trad33-datasheet.pdf)

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