component
BD93291EFJ-E2
Public Made by Adomby adom
ROHM Semicon DC-DC Converters, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownBD93291EFJ-E2
ROHM Semicon · DC-DC Converters · SOIC-8
BD93291EFJ-E2 from ROHM Semicon, in a SOIC-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 | SW | output | Connects the inductor switching node of the high-voltage buck converter, tied to the high-side FET source and low-side FET drain, with an SW voltage range of -0.5V to 26V and an absolute maximum of 30V. |
| 2 | BST | power_out | Connect a 0.1uF bootstrap capacitor between BST and SW to generate the high-side N-channel MOSFET gate drive voltage, with BST rated at VSW+7V. |
| 3 | EN | input | Enable input where high (2.3V typ.) activates the output and low (1.8V typ.) shuts the IC down, with an absolute maximum of 30V. |
| 4 | VIN | power_in | Supply input for the high-voltage buck converter with an operating range of 8.0V to 26V (absolute maximum 30V), and a 10uF ceramic bias capacitor is recommended. |
| 5 | GND | power_in | Power ground for the low-side MOSFETs of both buck converters and analog ground, which must be the minimum potential in the system under all operating conditions. |
| 6 | FBL | input | Output voltage feedback input of the low-voltage buck converter, regulated to a feedback voltage of 0.8V ±1.5%. |
| 7 | SWL | output | Connects the inductor switching node of the low-voltage buck converter, with a SWL voltage range of -0.5V to 5.5V and an absolute maximum of 7.0V. |
| 8 | VOUT | power_in | Supply pin for the low-voltage buck converter (5.0V) and output voltage feedback for the high-voltage buck converter, with an absolute maximum of 7.0V, and a 10uF ceramic bias capacitor is recommended. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ROHM Semicon |
| Package | SOIC-8 |
| Category | Power Supply Chip |
| Pins | 8 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | Especially, C_CO3 between VOUT and GND must be placed near the VOUT pin, and keep the distance "b" less than 2mm. ・When there is unused area on PCB, please arrange the copper foil plain of DC nodes, s | 15 |
CAD (KiCad official)
- Symbol:
BD93291EFJ-E2 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
bd93291efj-e2-etched.step/bd93291efj-e2-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bd93291efj-e2.step/bd93291efj-e2.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ROHM Semicon datasheet (24 pp, sha256
1dcc194d965ac6b0, retrieved 2026-10-26, tier: manufacturer) - 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).