component
LP2951-33DRGR
Public Made by Adomby adom
Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SON-8-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
markdownLP2951-33DRGR
Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SON-8-EP(3x3)
LP2951-33DRGR from Texas Instruments, in a SON-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 | power_out | Regulated 3.3V output requiring external bypass capacitor of 1µF minimum (1-100µF supported with ESR 0-2Ω) for stability and improved transient response. |
| 2 | SENSE | input | Output voltage sense input for fixed output mode when FEEDBACK connected to VTAP; must be left floating for adjustable output configuration with external divider. |
| 3 | SHUTDOWN | input | Active high enable/disable input; high voltage disables regulator output and low voltage enables operation; connect to ground if shutdown control is not required. |
| 4 | GND | power_in | Ground reference and power return connection; internally connected to thermal pad for SON-8-EP package. |
| 5 | ERROR | tri_state | Open-drain active low fault indicator output; goes low when VOUT drops 6% or more below nominal output voltage. |
| 6 | VTAP | input | Internal reference voltage divider tap for fixed output configuration; connect to FEEDBACK for fixed 3.3V output or leave floating for adjustable output mode. |
| 7 | FEEDBACK | input | Output feedback input determining output voltage; connect to VTAP (with OUTPUT-to-SENSE connection) for fixed 3.3V, or to external resistor divider for adjustable 1.2-29V output. |
| 8 | INPUT | power_in | Unregulated power input pin accepting 2-30V supply voltage; requires bypass capacitor of ≥1µF to ground for voltage stabilization and improved transient response. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SON-8-EP(3x3) |
| Category | Power Management (PMIC) |
| Pins | 9 |
CAD (KiCad official)
- Symbol:
LP2951-33DRGR - Footprint:
Package_SON:WSON-8-1EP_3x3mm_P0.5mm_EP1.6x2.0mm - 3D model: SON-8-EP(3x3) (KiCad packages3D, STEP)
- 3D model files:
lp2951-33drgr-etched.step/lp2951-33drgr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lp2951-33drgr.step/lp2951-33drgr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (48 pp, sha256
d245e8d4bbb0ca93, retrieved 2026-10-03, 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).