component
LD2985BM18R
Public Made by Adomby adom
STMicroelectronics DC-DC Converters, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLD2985BM18R
STMicroelectronics · DC-DC Converters · SOT-23-5
LD2985BM18R from STMicroelectronics, in a SOT-23-5. 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 | IN | power_in | Input port; the operating input voltage is 2.5 V to 16 V, and the absolute maximum DC input voltage is -0.3 V to 16 V. |
| 2 | GND | power_in | Ground pin for the regulator. |
| 3 | INHIBIT | input | TTL-compatible ON/OFF control that is not internally pulled up and must not be left floating; the device is disabled when this pin is connected to GND or to a positive voltage below 0.18 V, and the INHIBIT input voltage absolute maximum is -0.3 V to 16 V. |
| 4 | Bypass | passive | Bypass pin for a capacitor to GND that improves thermal noise performance; the datasheet cites CBYP = 10 nF to reduce output noise to 30 µVrms. |
| 5 | OUT | power_out | Regulated output port, rated for output currents up to 150 mA and internally current- and thermally limited. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
CAD (KiCad official)
- Symbol:
LD2985BM18R - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
ld2985bm18r-etched.step/ld2985bm18r-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ld2985bm18r.step/ld2985bm18r.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (18 pp, sha256
19d9fa271cb4bebe, retrieved 2026-10-08, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).