component
L7986TR
Public Made by Adomby adom
STMicroelectronics Global Sourcing Parts, TDFN-10-EP(3x3). 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
markdownL7986TR
STMicroelectronics · Global Sourcing Parts · TDFN-10-EP(3x3)
L7986TR from STMicroelectronics, in a TDFN-10-EP(3x3). 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 | OUT | power_out | Step-down regulator output, 0.6 V to VIN, 3 A maximum DC output current, -0.3 to VCC rating. |
| 2 | OUT | power_out | Step-down regulator output (second pin for reduced contact resistance), -0.3 to VCC rating. |
| 3 | SYNCH | bidirectional | Synchronization output/input; generates 180° phase-shifted clock when floating, synchronized to external clock up to 1 MHz when driven; -0.3 to 4 V. |
| 4 | EN | input | Enable input (active high); device ON when voltage greater than 1.2 V, OFF when voltage less than 0.3 V; -0.3 to VCC rating. |
| 5 | COMP | output | Error amplifier output for feedback loop frequency compensation; 0 to 3.3 V output voltage range. |
| 6 | FB | input | Feedback input; output voltage regulated to 0.6 V, external resistor divider enables higher output voltages; -0.3 to 1.5 V rating. |
| 7 | FSW | input | Frequency select input; open-circuit selects 250 kHz free-running frequency, external resistor to GND increases frequency to 1 MHz maximum; -0.3 to 4 V. |
| 8 | GND | power_in | Ground reference, 0 V. |
| 9 | VCC | power_in | Unregulated DC input voltage supply; 4.5 to 38 V operating range, 45 V absolute maximum rating. |
| 10 | VCC | power_in | Unregulated DC input voltage supply (second pin for reduced contact resistance); 4.5 to 38 V operating range. |
| 11 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | TDFN-10-EP(3x3) |
| Category | Global Sourcing Parts |
| Pins | 11 |
CAD (KiCad official)
- Symbol:
L7986TR - Footprint:
Package_DFN_QFN:DFN-10-1EP_3x3mm_P0.5mm_EP1.55x2.48mm - 3D model: TDFN-10-EP(3x3) (KiCad packages3D, STEP)
- 3D model files:
l7986tr-etched.step/l7986tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);l7986tr.step/l7986tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (45 pp, sha256
ea1f0397355f0595, retrieved 2026-09-24, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).