component
LHR3040AFAA
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
markdownLHR3040AFAA
Legendsemi · Voltage Reference · SOP-8
LHR3040AFAA 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 must be left unconnected. |
| 2 | VIN | power_in | Supply voltage input, which must be at least VOUT + 0.2 V (4.296 V for LHR3040) and no more than 18 V, with a 2.7 V minimum for VOUT ≤ 2.5 V variants. |
| 3 | TEMP | output | Temperature monitor output that gives a temperature-dependent voltage of 668 mV at 25 °C with 1.91 mV/°C sensitivity; it has high output impedance and should be buffered if loaded. |
| 4 | GND | power_in | Ground reference pin for the device. |
| 5 | NC | unconnected | No internal connection; the pin may be left unconnected. |
| 6 | VOUT | power_out | Buffered reference voltage output (4.096 V for LHR3040), rated for ±10 mA load current and requiring a 1 µF to 50 µF output capacitor from VOUT to GND. |
| 7 | DNC | unconnected | Do not connect; this pin must be left unconnected. |
| 8 | DNC | unconnected | Do not connect; this pin must be left unconnected. |
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 |
|---|---|---|---|---|---|---|---|
| 输入电压 | -0.2 | 18 | V | 4 | |||
| 输出对地短路 | 0 | 30 | mA | 4 | |||
| 输出电压范围 | -0.2 | 5.5 | V | 4 | |||
| 工作温度 | -55 | 125 | °C | 4 | |||
| 结温（TJ 最大值） | TJ | 150 | °C | 4 | |||
| 贮存温度 | Tstg | -65 | 150 | °C | 4 | ||
| 静电放电 人体放电模式（HBM） | V(ESD) | -3000 | 3000 | V | HBM, ANSI/ESDA/JEDEC JS-001 (printed ±3000) | 5 | |
| 静电放电 充电器件模式（CDM） | V(ESD) | -1000 | 1000 | V | CDM, JEDEC JESD22-C101 (printed ±1000) | 5 | |
| 输入电压 VIN（建议工作条件） | VIN | 18 | V | Minimum printed as VOUT + 0.2V (no numeric value) | 5 | ||
| 输出电流 IOUT | IOUT | -10 | 10 | mA | 5 | ||
| 输出电压温漂 高等级 | δVOUT/dT | 1 | 3 | ppm/°C | 6 | ||
| 线性调整率（温度范围） | δVO(δVI) | 0.2 | 1 | ppm/V | VIN = VOUT + 0.2V, TA = -40°C 至 125°C | 6 | |
| 负载调整（温度范围） | δVO(δIL) | 50 | ppm/mA | -10mA < ILOAD < 10mA, VIN = VOUT + 0.75V, TA = -40°C 至 125°C | 6 | ||
| 短路电流 | ISC | 25 | mA | VOUT = 0 | 6 | ||
| 热迟滞 高等级 SOP-8 周期 1 | 70 | ppm | 周期 1 | 6 | |||
| 热迟滞 高等级 SOP-8 周期 2 | 50 | ppm | 周期 2 | 6 | |||
| 长期稳定性 SOP-8 | 100 | ppm/1000 小时 | 0 到 1000 小时 | 6 | |||
| 长期稳定性 SOP-8 | 50 | ppm/1000 小时 | 1000 到 2000 小时 | 6 | |||
| 电源电压 Vs | Vs | 18 | V | Minimum printed as VOUT + 0.2V (no numeric value) | 6 | ||
| 静态电流 | 0.8 | 1 | mA | 6 | |||
| 静态电流（温度范围） | 1.2 | mA | TA = -40°C 至 125°C | 6 | |||
| 指定的温度范围 | -40 | 125 | °C | 6 | |||
| 输出电压 VOUT（LHR3040） | VOUT | 4.096 | V | 5 | |||
| 输出电压噪声 | 1.5 | µVPP/V | F=0.1Hz 至 10Hz | 5 | |||
| TEMP 引脚电压输出 | 668 | mV | TA=25°C | 6 | |||
| TEMP 引脚温度敏感性 | 1.91 | mV/°C | TA = -40°C 至 125°C | 6 | |||
| 结至环境热阻 RθJA（SOP，DGK） | RθJA | 160.9 | °C/W | DGK (SOP), 8 pin | 5 | ||
| 结至外壳（顶部）热阻 RθJC(top)（SOP，DGK） | RθJC(top) | 53.9 | °C/W | DGK (SOP), 8 pin | 5 | ||
| 结至电路板热阻 RθJB（SOP，DGK） | RθJB | 82.3 | °C/W | DGK (SOP), 8 pin | 5 | ||
| 结至顶部特征参数 ψJT（SOP，DGK） | ψJT | 5.1 | °C/W | DGK (SOP), 8 pin | 5 | ||
| 结至电路板特征参数 ψJB（SOP，DGK） | ψJB | 80.7 | °C/W | DGK (SOP), 8 pin | 5 |
CAD (KiCad official)
- Symbol:
LHR3040AFAA - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
lhr3040afaa-etched.step/lhr3040afaa-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lhr3040afaa.step/lhr3040afaa.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Legendsemi datasheet (14 pp, sha256
a5ef983cd4f79fdb, retrieved 2026-10-18, 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).