component
BL8034CS8TR
Public Made by Adomby adom
BL Shanghai Belling DC-DC Converters, ESOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownBL8034CS8TR
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
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Voltage Range | 4.2 | 16 | V | 2 | |||
| Regulated Feedback Voltage | 0.904 | 0.923 | 0.942 | V | 4.2V≤VIN ≤16V | 2 | |
| Input Voltage | -0.3 | 17 | V | 2 | |||
| SW, EN Voltage | -0.3 | V | Maximum printed as VIN+0.3V | 2 | |||
| BST Voltage | -0.3 | V | Maximum printed as SW+6V | 2 | |||
| FB Voltage | -0.3 | 6 | V | 2 | |||
| Ambient Temperature (Ta) | Ta | -40 | 85 | C | 2 | ||
| Storage Temperature (Ts) | Ts | -55 | 150 | C | 2 |
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)
- 3D model files:
bl8034cs8tr-etched.step/bl8034cs8tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bl8034cs8tr.step/bl8034cs8tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BL Shanghai Belling datasheet (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).