component
LHR3020AFAA
Public Made by Adomby adom
Legendsemi Voltage Reference, SOP-8. 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
markdownLHR3020AFAA
Legendsemi · Voltage Reference · SOP-8
LHR3020AFAA from Legendsemi, in a SOP-8. 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 | DNC | unconnected | Do not connect this pin. |
| 2 | VIN | power_in | Supply voltage input; VIN must be at least VOUT + 0.2V and no more than 18V (LHR3020 minimum VIN is 2.7V). |
| 3 | TEMP | output | Temperature monitor output providing a temperature-related voltage (668mV + 1.91mV/°C × T), with high output impedance that must be buffered under load. |
| 4 | GND | power_in | Ground reference pin for the device. |
| 5 | NC | unconnected | No internal connection. |
| 6 | VOUT | output | Voltage reference output, rated for ±10mA source and sink, which must be decoupled with a 1μF to 50μF capacitor to GND. |
| 7 | DNC | unconnected | Do not connect this pin. |
| 8 | DNC | unconnected | Do not connect this pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Legendsemi |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input voltage | VIN | -0.2 | 18 | V | 4 | ||
| Output short to ground | 0 | 30 | mA | 4 | |||
| Output voltage range | -0.2 | 5.5 | V | 4 | |||
| Operating temperature | -55 | 125 | °C | 4 | |||
| Junction temperature (TJ max) | TJ | 150 | °C | 4 | |||
| Storage temperature | Tstg | -65 | 150 | °C | 4 | ||
| Input voltage (operating) | VIN | 18 | V | VIN minimum is VOUT+0.2V | 5 | ||
| Output current | IOUT | -10 | 10 | mA | 5 | ||
| Junction-to-ambient thermal resistance (SOP-8) | RθJA | 160.9 | °C/W | SOP-8 (DGK) | 5 | ||
| Junction-to-case top thermal resistance (SOP-8) | RθJC(top) | 53.9 | °C/W | SOP-8 (DGK) | 5 | ||
| Junction-to-board thermal resistance (SOP-8) | RθJB | 82.3 | °C/W | SOP-8 (DGK) | 5 | ||
| Junction-to-top characterization parameter (SOP-8) | ψJT | 5.1 | °C/W | SOP-8 (DGK) | 5 | ||
| Junction-to-board characterization parameter (SOP-8) | ψJB | 80.7 | °C/W | SOP-8 (DGK) | 5 | ||
| Output voltage LHR3020 | VOUT | 2.048 | V | 2.7V<VIN<18V | 5 | ||
| Initial accuracy, high grade | -0.05 | 0.05 | % | All voltage options (1) | 5 | ||
| Output voltage temperature drift, high grade | δVOUT/dT | 1 | 3 | ppm/°C | High grade | 5 | |
| Line regulation | δVO(δVI) | 0.1 | 1 | ppm/V | VIN = (VOUT + 0.2) to 18V (2) | 5 | |
| Line regulation over temperature | δVO(δVI) | 0.2 | 1 | ppm/V | VIN = VOUT + 0.2V, TA = -40°C to 125°C (2) | 5 | |
| Load regulation | δVO(δIL) | 20 | 30 | ppm/mA | -10mA < ILOAD < 10mA, VIN = VOUT + 0.75V (3) | 5 | |
| Load regulation over temperature | δVO(δIL) | 50 | ppm/mA | -10mA < ILOAD < 10mA, VIN = VOUT + 0.75V, TA = -40°C to 125°C (3) | 6 | ||
| Short-circuit current | ISC | 25 | mA | VOUT = 0 | 6 | ||
| Thermal hysteresis, high grade SOP-8 cycle 1 | 70 | ppm | High grade SOP-8 cycle 1 | 6 | |||
| Thermal hysteresis, high grade SOP-8 cycle 2 | 50 | ppm | High grade SOP-8 cycle 2 | 6 | |||
| Long-term stability SOP-8 0 to 1000 h | 100 | ppm/1000 h | SOP-8 0 to 1000 hours | 6 | |||
| Long-term stability SOP-8 1000 to 2000 h | 50 | ppm/1000 h | SOP-8 1000 to 2000 hours | 6 | |||
| TEMP pin output voltage | 668 | mV | TA = 25°C | 6 | |||
| TEMP pin temperature sensitivity | 1.91 | mV/°C | TA = -40°C to 125°C | 6 | |||
| Supply voltage | Vs | 18 | V | Minimum VOUT+0.2V | 6 | ||
| Quiescent current | 0.8 | 1 | mA | 6 | |||
| Quiescent current over temperature | 1.2 | mA | TA = -40°C to 125°C | 6 | |||
| Output voltage noise | 1.5 | µVPP/V | F=0.1Hz to 10Hz | 5 | |||
| Specified temperature range | -40 | 125 | °C | 6 | |||
| Operating temperature range | -55 | 125 | °C | 6 |
CAD (KiCad official)
- Symbol:
LHR3020AFAA - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
lhr3020afaa-etched.step/lhr3020afaa-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lhr3020afaa.step/lhr3020afaa.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Legendsemi datasheet (14 pp, sha256
a5ef983cd4f79fdb, retrieved 2026-10-27, 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-5-5(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).