# EG1205

**EG Micro** · Battery Management · ESOP-8

EG1205 from EG Micro, 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 | VIN | power_in | Chip power supply input for the linear voltage regulators; accepts 8V to 36V. |
| 2 | VO1 | power_out | 5V regulated output with maximum output current 100mA. |
| 3 | IO | output | Over-current protection transistor output port; outputs maximum voltage VO1+0.3V. |
| 4 | IS | input | Over-current protection transistor input port; accepts 0V to 36V for current sensing. |
| 5 | Bin | input | Power transistor base input port for driving buzzers or relays; accepts 0V to 36V. |
| 6 | GND | power_in | Chip ground reference. |
| 7 | CO | output | Power transistor collector output port; outputs maximum 36V for driving external loads. |
| 8 | VO2 | power_out | 12V regulated output with maximum output current 100mA. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | EG Micro |
| Package | ESOP-8 |
| Category | Power Management (PMIC) |
| Pins | 9 |

## CAD (KiCad official)

- Symbol: `EG1205`
- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm`
- 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files: `eg1205-etched.step` / `eg1205-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `eg1205.step` / `eg1205.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [EG Micro datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588917396224139264) (10 pp, sha256 `65f8a3b055f09b37`, retrieved 2026-09-17, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (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).

[Datasheet PDF](docs/eg1205-datasheet.pdf)