# IP5407

**INJOINIC** · Battery Management · ESOP-8

IP5407 from INJOINIC, 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 | VIN | power_in | DC 5V charging input pin; recommended input voltage 4.65V to 6V, absolute maximum -0.3 to 6V. |
| 2 | DCP | bidirectional | Connects to USB-A D+/D- for automatic phone charging-current identification (DCP), default D+=D-=2.7V. |
| 3 | KEY | bidirectional | Multiplexed pin for key input, lighting LED drive and NTC detection; tie a 51K resistor to GND if NTC is not used. |
| 4 | LED1 | output | LED drive pin for battery level display, drive current 5 mA. |
| 5 | LED2 | output | LED drive pin for battery level display, drive current 5 mA. |
| 6 | BAT | power_in | Boost input pin connected to the lithium battery positive terminal; battery operating voltage 3V to 4.4V. |
| 7 | SW | passive | DC-DC switching pin connected to the inductor (1.0uH recommended). |
| 8 | VOUT | power_out | 5V boost output pin, up to 2.1A load capability. |
| 9 | GND | power_in | Exposed power PAD, connect to GND. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `IP5407`
- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm`
- 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files: `ip5407-etched.step` / `ip5407-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ip5407.step` / `ip5407.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [INJOINIC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588919058863022080) (12 pp, sha256 `9c643300b10dec53`, retrieved 2026-10-09, 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 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/ip5407-datasheet.pdf)