# LM337MDTR

**XBLW** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2L

LM337MDTR from XBLW, in a TO-252-2L. 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 | ADJ | input | Adjustment pin for the output voltage; connect two external resistors to adjust the output voltage. |
| 2 | VIN | power_in | Input voltage pin (also connected to the package tab); the input-output differential is limited to 40 V max. |
| 3 | VOUT | power_out | Regulated negative output voltage pin, adjustable from -1.25 V to -37 V at 1.5 A or more. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | XBLW |
| Package | TO-252-2L |
| Category | Power Management (PMIC) |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `LM337MDTR`
- Footprint: `Package_TO_SOT_SMD:TO-252-2`
- 3D model: TO-252-2L (KiCad packages3D, STEP)
- 3D model files: `lm337mdtr-etched.step` / `lm337mdtr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm337mdtr.step` / `lm337mdtr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [XBLW datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8604447840085295104) (14 pp, sha256 `f9dff5cc4923ee49`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/lm337mdtr-datasheet.pdf)