GR7144

GR · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3

GR7144 from GR, in a SOT-89-3. 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	GND	power_in	Chip ground terminal (芯片接地端) for the GR7144 regulator in the SOT89-3 package.
2	VIN	power_in	Start-up input terminal (启动输入端); the GR7144 accepts a maximum input voltage of 18 V, with an absolute maximum rating of 20 V.
3	VOUT	power_out	Chip output terminal (芯片输出端) delivering the regulated 4.4 V output (4.268 V to 4.532 V at IOUT = 1 mA, VIN = 6 V) with up to 100 mA typical output current.

Key specifications

Parameter	Value
Manufacturer	GR
Package	SOT-89-3
Category	Power Management (PMIC)
Pins	3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
输出电压 Output voltage	VOUT	4.268	4.4	4.532	V	VIN＝6V，IOUT＝1mA	3
输出电流 Output current	IOUT	60	100		mA	VIN＝6.4V	3
负载调节 Load regulation	ΔVOUT		60	150	mV	VIN＝6.4V，1mA≤IOUT≤30mA	3
跌落电压 Dropout voltage	VDIF		100		mV	IOUT＝1mA	3
静态电流 Quiescent current	ISS		2	3	µA	VIN＝6.4V，空载	3
线性调整率 Line Regulation	ΔVOUT /(ΔVIN * VOUT)		0.2		％/V	5.4V≤VIN≤18V，IOUT＝1mA	3
输入电压 Input voltage	VIN			18	V		3
输出电压温度系数 Output voltage temperature coefficient	ΔVOUT /ΔTa		0.7		mV/℃	VIN＝6.4V，IOUT＝10mA，0℃≤Ta≤70℃	3
输出电压容差 Output voltage tolerance		-3		3	%		1
最大输入电压 Maximum input voltage	VIN			20	V		2
功耗 Power dissipation	PD			200	mW		2
工作温度 Operating temperature	Tw	-25		70	℃		2
存储温度 Storage temperature	Tc	-50		125	℃		2
焊接温度 Soldering temperature	Th			260	℃	10s	2

CAD (KiCad official)

Symbol: GR7144
Footprint: Package_TO_SOT_SMD:SOT-89-3
3D model: SOT-89-3 (KiCad packages3D, STEP)
3D model files: gr7144-etched.step / gr7144-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); gr7144.step / gr7144.glb are the bare package body.

Provenance

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

Datasheet: GR datasheet (9 pp, sha256 8e23a109ba34970e, retrieved 2026-10-17, 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

# GR7144

**GR** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3

GR7144 from GR, in a SOT-89-3. 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 | GND | power_in | Chip ground terminal (芯片接地端) for the GR7144 regulator in the SOT89-3 package. |
| 2 | VIN | power_in | Start-up input terminal (启动输入端); the GR7144 accepts a maximum input voltage of 18 V, with an absolute maximum rating of 20 V. |
| 3 | VOUT | power_out | Chip output terminal (芯片输出端) delivering the regulated 4.4 V output (4.268 V to 4.532 V at IOUT = 1 mA, VIN = 6 V) with up to 100 mA typical output current. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | GR |
| Package | SOT-89-3 |
| Category | Power Management (PMIC) |
| Pins | 3 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| 输出电压 Output voltage | VOUT | 4.268 | 4.4 | 4.532 | V | VIN＝6V，IOUT＝1mA | 3 |
| 输出电流 Output current | IOUT | 60 | 100 |  | mA | VIN＝6.4V | 3 |
| 负载调节 Load regulation | ΔVOUT |  | 60 | 150 | mV | VIN＝6.4V，1mA≤IOUT≤30mA | 3 |
| 跌落电压 Dropout voltage | VDIF |  | 100 |  | mV | IOUT＝1mA | 3 |
| 静态电流 Quiescent current | ISS |  | 2 | 3 | µA | VIN＝6.4V，空载 | 3 |
| 线性调整率 Line Regulation | ΔVOUT /(ΔVIN * VOUT) |  | 0.2 |  | ％/V | 5.4V≤VIN≤18V，IOUT＝1mA | 3 |
| 输入电压 Input voltage | VIN |  |  | 18 | V |  | 3 |
| 输出电压温度系数 Output voltage temperature coefficient | ΔVOUT /ΔTa |  | 0.7 |  | mV/℃ | VIN＝6.4V，IOUT＝10mA，0℃≤Ta≤70℃ | 3 |
| 输出电压容差 Output voltage tolerance |  | -3 |  | 3 | % |  | 1 |
| 最大输入电压 Maximum input voltage | VIN |  |  | 20 | V |  | 2 |
| 功耗 Power dissipation | PD |  |  | 200 | mW |  | 2 |
| 工作温度 Operating temperature | Tw | -25 |  | 70 | ℃ |  | 2 |
| 存储温度 Storage temperature | Tc | -50 |  | 125 | ℃ |  | 2 |
| 焊接温度 Soldering temperature | Th |  |  | 260 | ℃ | 10s | 2 |

## CAD (KiCad official)

- Symbol: `GR7144`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files: `gr7144-etched.step` / `gr7144-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `gr7144.step` / `gr7144.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [GR datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602690333977563136) (9 pp, sha256 `8e23a109ba34970e`, retrieved 2026-10-17, 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](docs/gr7144-datasheet.pdf)