# XL6019E1

**XLSEMI** · DC-DC Converters · TO-263-5

XL6019E1 from XLSEMI, in a TO-263-5. 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 | GND | power_in | Ground pin. Common return for input, output and internal circuitry. |
| 2 | EN | input | Enable pin. TTL-compatible: logic low shuts the converter down, logic high enables operation. Threshold typ. 1.4V (high) / 0.8V (low). Floating is treated as high. VEN range -0.3V to VIN. |
| 3 | SW | output | Power switch output. Drain of the internal N-channel power MOSFET; connect to the inductor/diode boost node. Absolute max VSW = 60V, internal SW overvoltage clamp typ. 60V. Also brought out on the metal tab. |
| 4 | VIN | power_in | Power supply input, 5V to 40V DC. Requires a bulk electrolytic capacitor between VIN and GND to suppress noise. Absolute max 45V. |
| 5 | FB | input | Output-voltage feedback sense pin. Internal reference is 1.25V; set VOUT with a resistor divider using VOUT = 1.25 × (1 + R2/R1). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | XLSEMI |
| Package | TO-263-5 |
| Category | PMIC |
| Pins | 5 |

## Ordering variants

Same part, different packaging or reel option.

- `XL6019E1`

## CAD (KiCad official)

- Symbol: `XL6019E1`
- Footprint: `Package_TO_SOT_SMD:TO-263-5_TabPin6`
- 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files: `xl6019e1-etched.step` / `xl6019e1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `xl6019e1.step` / `xl6019e1.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [XLSEMI datasheet](docs/xl6019e1-datasheet.pdf) (14 pp, sha256 `a08dcab1375258c6`, retrieved 2026-08-17, tier: manufacturer)
- **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).

[Datasheet PDF](docs/xl6019e1-datasheet.pdf)