GM7400ARZ-3-R7

GONGMOSEMI · Voltage Reference · SO-8

GM7400ARZ-3-R7 from GONGMOSEMI, in a SO-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	NC	unconnected	No internal connection; leave floating in the application.
2	VIN	power_in	Power supply input; the datasheet gives a 3.3V to 40V supply range and requires VIN to be at least VOUT + 1V (3.5V minimum).
3	TEMP	output	Temperature monitor pin; unbuffered PTAT output with 657 mV typical at 25°C and a 2.2 mV/°C temperature sensitivity.
4	GND	power_in	Ground reference for the device.
5	TRIM	passive	Output voltage trim pin used to fine-tune VOUT up or down; the datasheet gives a trim range of ±3% typical and ±6% maximum with a 10 kΩ potentiometer.
6	VOUT	output	Reference voltage output, with 3V output and ±0.05% initial accuracy for the Grade B version and ±0.02% for Grade A, and ±10mA output drive capability.
7	NC	unconnected	No internal connection; leave floating in the application.
8	NC	unconnected	No internal connection; leave floating in the application.

Key specifications

Parameter	Value
Manufacturer	GONGMOSEMI
Package	SO-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
Output voltage accuracy Grade A	VO	-0.02		0.02	%	Grade A	6
Temperature coefficient 8-pin SOIC Grade A	TCVO		1.5	3	ppm/°C	8 引脚 SOIC, −40°C < TA < +125°C, 0°C < TA < +70°C	6
Minimum input-output voltage differential at VOUT=3.0V	VDO		0.2		V	VOUT = 3.0V, VOUT = 5.0V, VOUT = 10.0V	6
Line regulation	∆VO/∆VIN		15	25	ppm/V	VIN = 4.0 V to 50 V, −40°C < TA < +125°C	6
Load regulation	∆VO/∆ILOAD		15	45	ppm/mA	ILOAD = 0 mA to 10 mA, −40°C < TA < +125°C, VIN = 10.0 V	6
Quiescent current	IIN			1.2	mA	空载, −55°C < TA < +125°C	6
Output voltage noise, peak-to-peak	eN p-p		2		ppm_p-p	0.1 Hz to 10.0 Hz	6
Short-circuit current	ISC		30		mA		6
Long-term stability	ΔVOUT_LTD			60	ppm	1000 小时	6
Output voltage hysteresis	∆VOUT_HYS			50	ppm	25°C < TA < +125°C	6
TEMP pin output voltage	VTEMP		657		mV		6
Temperature sensitivity of TEMP pin	TCVTEMP		2.2		mV/°C		6
Input voltage	VIN			45	V		5
Storage temperature range	TSTG	-65		150	°C		5
Operating temperature range, SOIC and MSOP	TA	-55		125	°C	SOIC 和 MSOP	5
Junction temperature	TJ	-65		150	°C		5
Pin temperature, soldering				300	°C	焊接 60 秒	5
Thermal resistance junction-to-ambient, 8-pin SOIC	θJA		130		°C/W		5
Thermal resistance junction-to-case, 8-pin SOIC	θJC		43		°C/W		5

CAD (KiCad official)

Symbol: GM7400ARZ-3-R7
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SO-8 (KiCad packages3D, STEP)
3D model files: gm7400arz-3-r7-etched.step / gm7400arz-3-r7-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); gm7400arz-3-r7.step / gm7400arz-3-r7.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: GONGMOSEMI datasheet (17 pp, sha256 bc5978c04a4c7c0a, 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, primary claude-haiku-5-5 (text), consensus off (skipped (clean text read)), 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

# GM7400ARZ-3-R7

**GONGMOSEMI** · Voltage Reference · SO-8

GM7400ARZ-3-R7 from GONGMOSEMI, in a SO-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 | NC | unconnected | No internal connection; leave floating in the application. |
| 2 | VIN | power_in | Power supply input; the datasheet gives a 3.3V to 40V supply range and requires VIN to be at least VOUT + 1V (3.5V minimum). |
| 3 | TEMP | output | Temperature monitor pin; unbuffered PTAT output with 657 mV typical at 25°C and a 2.2 mV/°C temperature sensitivity. |
| 4 | GND | power_in | Ground reference for the device. |
| 5 | TRIM | passive | Output voltage trim pin used to fine-tune VOUT up or down; the datasheet gives a trim range of ±3% typical and ±6% maximum with a 10 kΩ potentiometer. |
| 6 | VOUT | output | Reference voltage output, with 3V output and ±0.05% initial accuracy for the Grade B version and ±0.02% for Grade A, and ±10mA output drive capability. |
| 7 | NC | unconnected | No internal connection; leave floating in the application. |
| 8 | NC | unconnected | No internal connection; leave floating in the application. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | GONGMOSEMI |
| Package | SO-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 |
|---|---|---|---|---|---|---|---|
| Output voltage accuracy Grade A | VO | -0.02 |  | 0.02 | % | Grade A | 6 |
| Temperature coefficient 8-pin SOIC Grade A | TCVO |  | 1.5 | 3 | ppm/°C | 8 引脚 SOIC, −40°C < TA < +125°C, 0°C < TA < +70°C | 6 |
| Minimum input-output voltage differential at VOUT=3.0V | VDO |  | 0.2 |  | V | VOUT = 3.0V, VOUT = 5.0V, VOUT = 10.0V | 6 |
| Line regulation | ∆VO/∆VIN |  | 15 | 25 | ppm/V | VIN = 4.0 V to 50 V, −40°C < TA < +125°C | 6 |
| Load regulation | ∆VO/∆ILOAD |  | 15 | 45 | ppm/mA | ILOAD = 0 mA to 10 mA, −40°C < TA < +125°C, VIN = 10.0 V | 6 |
| Quiescent current | IIN |  |  | 1.2 | mA | 空载, −55°C < TA < +125°C | 6 |
| Output voltage noise, peak-to-peak | eN p-p |  | 2 |  | ppm_p-p | 0.1 Hz to 10.0 Hz | 6 |
| Short-circuit current | ISC |  | 30 |  | mA |  | 6 |
| Long-term stability | ΔVOUT_LTD |  |  | 60 | ppm | 1000 小时 | 6 |
| Output voltage hysteresis | ∆VOUT_HYS |  |  | 50 | ppm | 25°C < TA < +125°C | 6 |
| TEMP pin output voltage | VTEMP |  | 657 |  | mV |  | 6 |
| Temperature sensitivity of TEMP pin | TCVTEMP |  | 2.2 |  | mV/°C |  | 6 |
| Input voltage | VIN |  |  | 45 | V |  | 5 |
| Storage temperature range | TSTG | -65 |  | 150 | °C |  | 5 |
| Operating temperature range, SOIC and MSOP | TA | -55 |  | 125 | °C | SOIC 和 MSOP | 5 |
| Junction temperature | TJ | -65 |  | 150 | °C |  | 5 |
| Pin temperature, soldering |  |  |  | 300 | °C | 焊接 60 秒 | 5 |
| Thermal resistance junction-to-ambient, 8-pin SOIC | θJA |  | 130 |  | °C/W |  | 5 |
| Thermal resistance junction-to-case, 8-pin SOIC | θJC |  | 43 |  | °C/W |  | 5 |

## CAD (KiCad official)

- Symbol: `GM7400ARZ-3-R7`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SO-8 (KiCad packages3D, STEP)
- 3D model files: `gm7400arz-3-r7-etched.step` / `gm7400arz-3-r7-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `gm7400arz-3-r7.step` / `gm7400arz-3-r7.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [GONGMOSEMI datasheet](docs/gm7400arz-3-r7-datasheet.pdf) (17 pp, sha256 `bc5978c04a4c7c0a`, 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`, primary `claude-haiku-5-5` (text), consensus `off` (skipped (clean text read)), 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](docs/gm7400arz-3-r7-datasheet.pdf)