LP2954IMX

@@ -0,0 +1,52 @@+# LP2954IMX++**Texas Instruments** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOIC-8-150mil++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++- `LP2954IMXIM`+- `LP2954IMXIMX`+- `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](https://www.ti.com/lit/ds/symlink/lp2954imx.pdf) (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](docs/lp2954imx-datasheet.pdf)

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