LP2954IMX from Texas Instruments, in a SOIC-8-150mil. 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	power_out	Regulated output voltage (adjustable from 1.23 V to 29 V via external divider to FEEDBACK). Requires an output capacitor (≥2.2 μF typ) for loop stability. Sources up to 250 mA.
2	SENSE	input	Output voltage remote sense. Connects internally to the output regulation feedback path so that IR drops in the OUT trace can be compensated by wiring SENSE at the load.
3	SHUTDOWN	input	Active-low logic shutdown input. Pulling this pin low disables the regulator and puts the device into a low-current standby state; tie high (or leave floating with a pull-up) for normal operation.
4	GND	power_in	Device ground reference. Carries the quiescent current (~120 μA typ) plus internal control-circuit return.
5	ERROR	output	Active-low error/power-good flag. Asserts (pulled low) when the regulator output falls out of regulation (e.g. during dropout), warning downstream logic before the rail collapses.
6	5V TAP	output	Internal resistor divider tap that provides a preset 5-V feedback point. Tie to FEEDBACK to configure the adjustable part for a fixed 5-V output without any external resistors.
7	FEEDBACK	input	Voltage feedback input to the internal error amplifier (internal reference ~1.23 V). Set the output voltage via an external R1/R2 divider from OUT to GND, tapped into FEEDBACK; or strap FEEDBACK to the 5V TAP pin for a fixed 5-V output.
8	IN	power_in	Unregulated input supply, -20 V to +30 V absolute maximum. Reverse-battery protected. Requires an input capacitor for stability; dropout is ~60 mV at light load and ~470 mV at 250 mA.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOIC-8-150mil
Category	PMIC
Pins	8

Ordering variants

Same part, different packaging or reel option.

LP2954IMX
LP2954IMXAIM
LP2954IMXAIMX
LP2954IMXT
LP2954IMXS

CAD (KiCad official)

Symbol: LP2954IMX
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8-150mil (KiCad packages3D, STEP)

Provenance

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

Datasheet: Texas Instruments datasheet (28 pp, sha256 ba5f73966fd8fe03, 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