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LHR3025AFMA

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lhr3025afma.step / lhr3025afma.glb are 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, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF