BL8034CS8TR

@@ -0,0 +1,49 @@+# BL8034CS8TR++**BL Shanghai Belling** · DC-DC Converters · ESOP-8++BL8034CS8TR from BL Shanghai Belling, in a ESOP-8. 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 | BST | passive | High-side power transistor gate-drive bootstrap input. Connect a 1uF ceramic capacitor between BST and SW to generate the boosted gate-drive rail for the internal high-side MOSFET. Absolute maximum: -0.3V to SW+6V. |+| 2 | VIN | power_in | Main power input, 4.2V to 16V operating range (17V absolute max). Bypass with a 10uF to 22uF ceramic capacitor to GND placed close to the pin. |+| 3 | SW | power_out | Switching node connecting the internal high-side and low-side MOSFETs to the external inductor. Absolute max -0.3V to VIN+0.3V; internally current-limited to ~6A peak (cycle-by-cycle). |+| 4 | GND | power_in | Device ground return. Tie the exposed pad to this pin on the PCB and to a large GND copper area for thermal performance. |+| 5 | FB | input | Feedback input to the internal error amplifier. Regulates to an internal reference of 0.923V (typical, 0.904V-0.942V). Set output voltage with a resistor divider from VOUT to FB to GND. Absolute max -0.3V to 6V. |+| 6 | NC | unconnected | No internal connection. May be left floating or tied to GND. |+| 7 | EN | input | Enable input. Drive high (>=1.5V) to enable the converter; drive low (<=0.6V) to place the device in shutdown (~5uA typical). Absolute max -0.3V to VIN+0.3V. Do not leave floating; a 100k pull-up to VIN is typical. |+| 8 | NC | unconnected | No internal connection. May be left floating or tied to GND. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | BL Shanghai Belling |+| Package | ESOP-8 |+| Category | PMIC |+| Pins | 8 |++## Ordering variants++Same part, different packaging or reel option.++- `BL8034CS8TR`++## CAD (KiCad official)++- Symbol: `BL8034CS8TR`+- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm`+- 3D model: ESOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [BL Shanghai Belling datasheet](docs/bl8034cs8tr-datasheet.pdf) (5 pp, sha256 `58a69f29e7369773`, 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/bl8034cs8tr-datasheet.pdf)

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