# DL6019

**DOINGTER** · DC-DC Converters · TO-263-5L

DL6019 from DOINGTER, in a TO-263-5L. 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 | GND | power_in | Ground pin. |
| 2 | EN | input | Enable pin: drive low to turn off the device (VEN threshold low 0.8V max), drive high (1.4V min) to turn on; floating is default high. |
| 3 | SW | output | Power switch output pin, the switch node that supplies power to the output, rated -0.3 to 60V; the metal tab is also SW. |
| 4 | VIN | power_in | Supply voltage input operating from 3.6V to 36V DC, to be bypassed to GND with a suitably large capacitor to eliminate input noise. |
| 5 | FB | input | Feedback pin with a feedback threshold voltage of 1.25V, rated -0.3V to Vin. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | DOINGTER |
| Package | TO-263-5L |
| Category | Power Management (PMIC) |
| Pins | 6 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Feedback voltage | VFB | 1.23 | 1.25 | 1.27 | V | Vin=5V to 12V,Vout=24V Iload=0.1~1A | 4 |
| Fixed output voltage 12V | Vout | 11.76 | 12 | 12.24 | V | Vin=5V,Iout=1A | 4 |
| Fixed output voltage 24V | Vout | 23.52 | 24 | 24.48 | V | Vin=12V,Iout=1A | 4 |
| Input operation voltage | Vin | 3.6 |  | 36 | V |  | 4 |
| Oscillator frequency | FOSC | 160 | 200 | 240 | kHz |  | 4 |
| Output power NMOS on-resistance | Rdson |  | 110 | 120 | mohm | Vin=12V, ISW=5A | 4 |
| Quiescent supply current | Iq |  | 2.5 | 5 | mA | VEN=2V, VFB=Vin | 4 |
| Shutdown supply current | ISTBY |  | 70 | 100 | µA | VEN=0V | 4 |
| Switch current limit | IL |  | 5 |  | A | VFB=0 | 4 |
| EN pin threshold, high (regulator ON) | VEN | 1.4 |  |  | V | High (regulator ON) | 4 |
| EN pin threshold, low (regulator OFF) | VEN |  |  | 0.8 | V | Low (regulator OFF) | 4 |
| EN pin input leakage current (ON) | IH |  | 3 | 10 | µA | VEN=2V(ON) | 4 |
| EN pin input leakage current (OFF) | IL |  | 3 | 10 | µA | VEN=0V(OFF) | 4 |
| Max. duty cycle | DMAX |  |  | 90 | % | VFB=0V | 4 |
| Input voltage |  | -0.3 |  | 36 | V |  | 3 |
| Feedback pin voltage |  | -0.3 |  |  | V |  | 3 |
| EN pin voltage |  | -0.3 |  |  | V |  | 3 |
| Output switch pin voltage |  | -0.3 |  | 60 | V |  | 3 |
| Thermal resistance, junction to ambient |  |  | 30 |  | ℃ /W | no heatsink, free air | 3 |
| Operating temperature |  | -40 |  | 125 | ℃ |  | 3 |
| Storage temperature |  | -65 |  | 150 | ℃ |  | 3 |
| Lead temperature |  |  |  | 260 | ℃ | soldering, 10 sec | 3 |
| ESD (HBM) |  | 2000 |  |  | V | HBM | 3 |

## CAD (KiCad official)

- Symbol: `DL6019`
- Footprint: `Package_TO_SOT_SMD:TO-263-5_TabPin6`
- 3D model: TO-263-5L (KiCad packages3D, STEP)
- 3D model files: `dl6019-etched.step` / `dl6019-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dl6019.step` / `dl6019.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [DOINGTER datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8604447803183673344) (5 pp, sha256 `c3b7ac46ec58218f`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/dl6019-datasheet.pdf)