LHR3020BFAA

@@ -0,0 +1,53 @@+# LHR3020BFAA++**Legendsemi** · Voltage Reference · SOP-8++LHR3020BFAA from Legendsemi, in a SOP-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 | DNC | unconnected | Do Not Connect. Reserved/internal test pin; must be left electrically floating on the PCB. Do not tie to GND, VIN, or any signal. |+| 2 | VIN | power_in | Positive supply input. Operating range VOUT+0.2V to 18V (LHR3020: VIN min = VOUT+0.2V; other variants ≥2.7V). Absolute maximum -0.2V to 18V. Bypass with 1 µF to 10 µF placed close to the pin. |+| 3 | TEMP | output | Temperature-monitor analog output. High-impedance node following VTEMP = 668 mV + 1.91 mV/°C × T; accuracy ≈ ±15°C. Buffer with a low-drift op-amp when driving low-impedance loads to avoid measurement error; loading this pin does not affect VOUT accuracy. |+| 4 | GND | power_in | Device ground / 0 V reference return for VIN, VOUT, and TEMP. |+| 5 | NC | unconnected | No Internal Connection. Pin is not bonded internally; may be left floating or tied to a plane at the designer's discretion. |+| 6 | VOUT | power_out | Precision reference voltage output. Nominal 2.048 V for LHR3020, initial accuracy ±0.1% (B-grade), drift 8 ppm/°C max. Sinks/sources up to ±10 mA. Must be decoupled to GND with a 1 µF to 50 µF output capacitor. |+| 7 | DNC | unconnected | Do Not Connect. Reserved/internal test pin; must be left electrically floating on the PCB. |+| 8 | DNC | unconnected | Do Not Connect. Reserved/internal test pin; must be left electrically floating on the PCB. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Legendsemi |+| Package | SOP-8 |+| Category | Power Management (PMIC) |+| Pins | 8 |++## Ordering variants++Same part, different packaging or reel option.++- `LHR3020BFAA`+- `LHR3020BFAAAFAA`+- `LHR3020BFAABFMA`+- `LHR3020BFAAAFMA`++## CAD (KiCad official)++- Symbol: `LHR3020BFAA`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Legendsemi datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603079658217099264) (None pp, sha256 `a5ef983cd4f79fdb`, retrieved 2026-08-17, 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:** `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/lhr3020bfaa-datasheet.pdf)

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