component
GR7144
Public Made by Adomby adom
GR Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. 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
markdownGR7144
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);gr7144.step/gr7144.glbare 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, 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).