component
BL9315
Public Made by Adomby adom
BL Shanghai Belling DC-DC Converters, ESOP-8. Pinout cross-checked by two models against 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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README
markdownBL9315
BL Shanghai Belling · DC-DC Converters · ESOP-8
BL9315 from BL Shanghai Belling, in a ESOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | NC | unconnected | No connection; this pin is not connected internally and is not used. |
| 2 | IN | power_in | Power supply input pin; it must be closely decoupled to GND with at least 10uF ceramic capacitor. |
| 3 | SW | output | Inductor connection; connect an inductor between SW and the regulator output. |
| 4 | GND | power_in | Ground pin. |
| 5 | FB | input | Feedback input; an external resistor divider from the output to FB and GND sets the output between 0.6V and VIN. |
| 6 | NC | unconnected | No connection; this pin is not connected internally and is not used. |
| 7 | EN | input | Enable pin for the IC; drive high to enable the part and low to disable it. |
| 8 | NC | unconnected | No connection; this pin is not connected internally and is not used. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BL Shanghai Belling |
| Package | ESOP-8 |
| Category | Power Management (PMIC) |
| Pins | 9 |
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 | VIN | 2.5 | 5.5 | V | 3 | ||
| Feedback Voltage | VFB | 0.588 | 0.6 | 0.612 | V | 3 | |
| Feedback Leakage current | IFB | 0.1 | 0.4 | uA | 3 | ||
| Input Voltage Range (recommended operating) | VIN | 2.5 | 5.5 | V | 2 | ||
| Operating Temperature (recommended operating) | TOPT | -40 | 85 | C | 2 | ||
| Max Input Voltage | 6 | V | 2 | ||||
| Max Operating Junction Temperature | Tj | 150 | C | 2 | |||
| Ambient Temperature | Ta | -40 | 85 | C | 2 | ||
| Maximum Power Dissipation ESOP8 | 1 | W | 2 | ||||
| Storage Temperature | Ts | -40 | 150 | C | 2 | ||
| Lead Temperature | 260 | C | 10S | 2 | |||
| Quiescent Current | IQ | 40 | uA | Active, VFB=0.65V | 3 | ||
| Shutdown Current | ISD | 1 | uA | Shutdown | 3 | ||
| Switching Frequency | FSW | 1.5 | MHz | 3 | |||
| PMOSFET RDSON | RONP | 100 | mΩ | 3 | |||
| NMOSFET RDSON | RONN | 75 | mΩ | 3 | |||
| UVLO Threshold | VUVLO | 2.5 | V | 3 | |||
| UVLO Hysteresis | V1HYS | 0.15 | V | 3 | |||
| Peak Current Limit | ILIMIT | 5 | A | 3 | |||
| SW Leakage Current | ISW | 1 | uA | VIN=5.5V, VSW=0 or 5.5V, VEN=0V | 3 | ||
| Over Voltage Threshold | VOVP | 6.15 | V | 3 | |||
| OVP Hysteresis | V2HYS | 0.3 | V | 3 | |||
| EN Leakage Current | IEN | 1 | uA | 3 | |||
| Soft Start Time | ISOFT | 350 | uS | 3 | |||
| EN Input High Voltage | VENH | 1.5 | V | 3 | |||
| EN Input Low Voltage | VENL | 0.4 | V | 3 | |||
| Thermal Shutdown | TSD | 150 | C | 3 | |||
| Hysteresis Thermal Shutdown | THSD | 20 | C | 3 | |||
| Discharge resistor | Rdis | 150 | Ω | 3 |
CAD (KiCad official)
- Symbol:
BL9315 - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm - 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files:
bl9315-etched.step/bl9315-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bl9315.step/bl9315.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BL Shanghai Belling datasheet (7 pp, sha256
099e1ef8cb4a6c79, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).