L5970D013TR from STMicroelectronics, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	OUT	output	Regulator switching output. Connects to the external inductor/catch-diode node of the buck converter; delivers up to 1A at 1.2V-35V.
2	SYNC	bidirectional	Master/slave synchronization pin. Allows synchronizing multiple regulators to a common switching frequency. Absolute max -0.3 to 4V.
3	INH	input	Inhibit input (active high). A logic high disables the device. If unused, must be grounded; when left open, an internal pull-up disables the device. Absolute max -0.3V to Vcc.
4	COMP	output	Error amplifier output for loop/frequency compensation. Connect external RC compensation network (typ. 4.7kΩ + 22nF with 220pF shunt).
5	FB	input	Feedback input. Tying FB directly to the output yields a 1.23V output; an external resistive divider is required for higher output voltages. Absolute max 4V.
6	VREF	power_out	3.3V (±2%) reference voltage output. No external stabilization capacitor is required.
7	GND	power_in	Device ground return.
8	VCC	power_in	Unregulated DC input supply, 4.4V to 36V operating (40V absolute max). Bypass with a low-ESR ceramic input capacitor (e.g. 10µF/35V).

Key specifications

Parameter	Value
Manufacturer	STMicroelectronics
Package	SOIC-8
Category	PMIC
Pins	8

Ordering variants

Same part, different packaging or reel option.

L5970D013TR

CAD (KiCad official)

Symbol: L5970D013TR
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`l5970d013tr.step`	122 KB	You want the bare part, or you mark your own boards.
`l5970d013tr-etched.step`	2.3 MB	You want the part with `L5970D013TR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 561 faces against 147 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

Datasheet: STMicroelectronics datasheet (17 pp, sha256 d13c9acf63805d28, retrieved 2026-08-17, tier: manufacturer)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF