component
LP2951-33QDRGRQ1
Public Made by Adomby adom
Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, WSON-8-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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LP2951-33QDRGRQ1
Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · WSON-8-EP(3x3)
LP2951-33QDRGRQ1 from Texas Instruments, in a WSON-8-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 | OUTPUT | output | Regulated output voltage pin; output capacitor of 1µF minimum from OUTPUT to GND required for stability. |
| 2 | SENSE | input | Output voltage sense input; connect to OUTPUT (with FEEDBACK to VTAP) for fixed output configuration only, otherwise leave floating. |
| 3 | SHUTDOWN | input | Active-high shutdown control input; high-level voltage disables regulator output, low-level voltage enables output. |
| 4 | GND | power_in | Ground reference connection. |
| 5 | ERROR | tri_state | Open-drain fault output pin; asserts low when VOUT drops 6% below nominal value. |
| 6 | VTAP | output | Internal voltage divider tap output; connect to FEEDBACK for fixed output configuration, otherwise leave floating. |
| 7 | FEEDBACK | input | Feedback input pin determining output voltage; connect to VTAP (with OUTPUT to SENSE) for fixed output, or connect to external resistor divider for adjustable output. |
| 8 | INPUT | power_in | Input power supply pin; 1µF minimum decoupling capacitor to GND recommended. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WSON-8-EP(3x3) |
| Category | Power Management (PMIC) |
| Pins | 9 |
CAD (KiCad official)
- Symbol:
LP2951-33QDRGRQ1 - Footprint:
Package_SON:WSON-8-1EP_3x3mm_P0.5mm_EP1.6x2.0mm - 3D model: WSON-8-EP(3x3) (KiCad packages3D, STEP)
- 3D model files:
lp2951-33qdrgrq1-etched.step/lp2951-33qdrgrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lp2951-33qdrgrq1.step/lp2951-33qdrgrq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (45 pp, sha256
62996f437fc72636, retrieved 2026-10-07, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-4-5-20251001(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).
# LP2951-33QDRGRQ1
**Texas Instruments** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · WSON-8-EP(3x3)
LP2951-33QDRGRQ1 from Texas Instruments, in a WSON-8-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 | OUTPUT | output | Regulated output voltage pin; output capacitor of 1µF minimum from OUTPUT to GND required for stability. |
| 2 | SENSE | input | Output voltage sense input; connect to OUTPUT (with FEEDBACK to VTAP) for fixed output configuration only, otherwise leave floating. |
| 3 | SHUTDOWN | input | Active-high shutdown control input; high-level voltage disables regulator output, low-level voltage enables output. |
| 4 | GND | power_in | Ground reference connection. |
| 5 | ERROR | tri_state | Open-drain fault output pin; asserts low when VOUT drops 6% below nominal value. |
| 6 | VTAP | output | Internal voltage divider tap output; connect to FEEDBACK for fixed output configuration, otherwise leave floating. |
| 7 | FEEDBACK | input | Feedback input pin determining output voltage; connect to VTAP (with OUTPUT to SENSE) for fixed output, or connect to external resistor divider for adjustable output. |
| 8 | INPUT | power_in | Input power supply pin; 1µF minimum decoupling capacitor to GND recommended. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WSON-8-EP(3x3) |
| Category | Power Management (PMIC) |
| Pins | 9 |
## CAD (KiCad official)
- Symbol: `LP2951-33QDRGRQ1`
- Footprint: `Package_SON:WSON-8-1EP_3x3mm_P0.5mm_EP1.6x2.0mm`
- 3D model: WSON-8-EP(3x3) (KiCad packages3D, STEP)
- 3D model files: `lp2951-33qdrgrq1-etched.step` / `lp2951-33qdrgrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lp2951-33qdrgrq1.step` / `lp2951-33qdrgrq1.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lp2951-q1) (45 pp, sha256 `62996f437fc72636`, retrieved 2026-10-07, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-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).
[Datasheet PDF](docs/lp2951-33qdrgrq1-datasheet.pdf)