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LHR3025AFMA
Public Made by Adomby adom
Legendsemi(领慧立芯) Voltage Reference, MSOP-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
markdownLHR3025AFMA
Legendsemi(领慧立芯) · Voltage Reference · MSOP-8
LHR3025AFMA from Legendsemi(领慧立芯), in a MSOP-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; the datasheet states this pin must be left unconnected (DNC = DO NOT CONNECT). |
| 2 | VIN | power_in | Supply voltage input, which must be at least VOUT + 0.2 V and at most 18 V (absolute maximum input is -0.2 V to 18 V), with a 2.7 V minimum required when VOUT is 2.5 V or lower, so the LHR3025 needs at least 2.7 V. |
| 3 | TEMP | output | Temperature monitor output that gives a temperature-dependent voltage (VTEMP = 640 mV + 2.08 mV/°C × T, about 692 mV at 25 °C, with roughly ±15 °C accuracy); it has high output impedance, so a low-impedance load must be buffered to avoid measurement error. |
| 4 | GND | power_in | Ground reference pin for the device, which must be decoupled to VIN and connected to the output capacitor return. |
| 5 | NC | unconnected | No internal connection; the pin is not connected inside the device. |
| 6 | VOUT | output | Voltage reference output, which for the LHR3025 is 2.5 V with 0.05% (high grade) or 0.1% (standard grade) initial accuracy, supports ±10 mA source and sink current, and requires a 1 µF to 50 µF output capacitor from VOUT to GND. |
| 7 | DNC | unconnected | Do not connect; the datasheet states this pin must be left unconnected (DNC = DO NOT CONNECT). |
| 8 | DNC | unconnected | Do not connect; the datasheet states this pin must be left unconnected (DNC = DO NOT CONNECT). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Legendsemi(领慧立芯) |
| Package | MSOP-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 |
|---|---|---|---|---|---|---|---|
| Initial accuracy, high grade (tolerance) | -0.05 | 0.05 | % | All voltage options (note 1) | 5 | ||
| Output voltage temperature drift, high grade MSOP-8 | δVOUT/dT | 1 | 5 | ppm/°C | 5 | ||
| Line regulation | δVO(δVI) | 0.7 | 1 | ppm/V | VIN = (VOUT + 0.2) to 18V (note 2) | 5 | |
| Load regulation | δVO(δIL) | 20 | 30 | ppm/mA | -10mA < ILOAD < 10mA, VIN = VOUT + 0.75V (note 3) | 5 | |
| Supply voltage Vs | Vs | 18 | V | See note (1); minimum printed as VOUT + 0.2 V | 6 | ||
| Quiescent current | 0.8 | 1 | mA | 6 | |||
| Quiescent current over temperature | 1.2 | mA | TA = -40°C to 125°C | 6 | |||
| Specified temperature range | -40 | 125 | °C | 6 | |||
| Operating temperature range | -55 | 125 | °C | 6 | |||
| Input voltage | -0.2 | 18 | V | 4 | |||
| Output short to ground current | 0 | 70 | mA | Output to GND short | 4 | ||
| Operating temperature | -55 | 125 | °C | 4 | |||
| Junction temperature (max) | TJ | 150 | °C | 4 | |||
| Storage temperature | Tstg | -65 | 150 | °C | 4 | ||
| Input voltage (recommended) | VIN | 18 | V | Minimum printed as VOUT + 0.2V | 5 | ||
| Output current (recommended) | IOUT | -10 | 10 | mA | 5 | ||
| Output voltage | VOUT | 2.5 | V | 2.7V<VIN<18V (test condition printed on shared line above LHR3020 row) | 5 | ||
| Output voltage noise | 1.5 | µVPP/V | F = 0.1 Hz to 10 Hz | 5 | |||
| Line regulation over temperature | δVO(δVI) | 1 | ppm/V | VIN = VOUT + 0.2V, TA = -40°C to 125°C (note 2) | 5 | ||
| Load regulation over temperature | δVO(δIL) | 50 | ppm/mA | -10mA < ILOAD < 10mA, VIN = VOUT + 0.75V, TA = -40°C to 125°C (note 3) | 5 | ||
| Short-circuit current | ISC | 60 | mA | VOUT = 0 | 5 | ||
| Thermal hysteresis, high grade MSOP-8 | 90 | ppm | Cycle 1 | 5 | |||
| Thermal hysteresis, high grade MSOP-8 | 60 | ppm | Cycle 2 | 6 | |||
| Long-term stability, MSOP-8 | 50 | ppm/1000 小时 | 0 to 1000 hours | 6 | |||
| Long-term stability, MSOP-8 | 25 | ppm/1000 小时 | 1000 to 2000 hours | 6 | |||
| TEMP pin output voltage | 692 | mV | TA = 25°C | 6 | |||
| TEMP pin temperature sensitivity | 2.08 | mV/°C | TA = -40°C to 125°C | 6 | |||
| Thermal resistance, junction-to-ambient (MSOP) | RθJA | 115 | °C/W | MSOP 8-pin | 5 | ||
| Thermal resistance, junction-to-case (top) (MSOP) | RθJC(top) | 63.4 | °C/W | MSOP 8-pin | 5 | ||
| Thermal resistance, junction-to-board (MSOP) | RθJB | 57.1 | °C/W | MSOP 8-pin | 5 | ||
| Junction-to-top characterization parameter (MSOP) | ψJT | 15.4 | °C/W | MSOP 8-pin | 5 | ||
| Junction-to-board characterization parameter (MSOP) | ψJB | 56.2 | °C/W | MSOP 8-pin | 5 |
CAD (KiCad official)
- Symbol:
LHR3025AFMA - Footprint:
Package_SO:MSOP-8_3x3mm_P0.65mm - 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files:
lhr3025afma-etched.step/lhr3025afma-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lhr3025afma.step/lhr3025afma.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Legendsemi(领慧立芯) datasheet (14 pp, sha256
ff3d9553c635cfa9, retrieved 2026-10-19, 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).