# L6920DCTR

**STMicroelectronics** · DC-DC Converters · MSOP-8

L6920DCTR from STMicroelectronics, in a MSOP-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 | FB | input | Output voltage selector: connect FB to GND for Vout = 5V or to OUT for Vout = 3.3V, or to an external resistor divider for an adjustable output voltage (1.8V to 5.5V). |
| 2 | LBI | input | Battery low-voltage detector input with an internal threshold of 1.23V; an external resistor divider is needed to set the desired low-battery threshold. |
| 3 | LBO | output | Battery low-voltage detector output that goes low when the LBI voltage drops below the internal 1.23V threshold; it is an open-drain output and requires an external pull-up resistor (about 200 kΩ). |
| 4 | REF | output | 1.23V reference voltage output; bypass to GND with a 100 nF capacitor to filter high-frequency noise, and no capacitor is required for stability. |
| 5 | SHDN | input | Shutdown input: the device is in shutdown when the pin is below 0.2V and operating when the pin is above 0.6V. |
| 6 | GND | power_in | Ground pin. |
| 7 | LX | passive | Step-up inductor connection (switching node) that is shorted to ground through the internal N-channel power switch during the on phase. |
| 8 | OUT | power_out | Power output pin, which is also the feedback reference when FB is tied to OUT for the 3.3V setting. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | MSOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `L6920DCTR`
- Footprint: `Package_SO:MSOP-8_3x3mm_P0.65mm`
- 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files: `l6920dctr-etched.step` / `l6920dctr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `l6920dctr.step` / `l6920dctr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588924472597995520) (16 pp, sha256 `e3114c67b6465255`, retrieved 2026-10-11, tier: lcsc)
- **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/l6920dctr-datasheet.pdf)