WMSIC Electronic Components

GR AMS1117-ADJ AMS1117

ModelAMS1117-ADJ
PackageSOT-223
BrandGR
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
GR AMS1117-ADJ
Type
GR
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
1.2V@(1A)
Electronic Component
GR
Electronic Component
AMS1117-ADJ
Electronic Component
1
Package
SOT-223
Electronic Component
Linear Regulator(LDO)
Electronic Component
0.331g
Electronic Component
1
Electronic Component
BM0264555460
Operating Temperature
0℃~+150℃@(Tj)
Operating Voltage
15V
Output
Electronic Component
Output Current
1A
Output Type
Electronic Component
Output Channel Count
1

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

GR品牌AMS1117-ADJ线性稳压器产品概述

一、核心基础参数总览

GR品牌AMS1117-ADJ是一款可调输出正线性稳压器,专为中低功率稳压场景设计,核心参数如下:

  • 输出类型:可调(输出电压范围可通过外部电阻灵活设定)
  • 额定输入电压:15V(兼容12V~18V宽输入范围)
  • 最大输出电流:1A(连续稳定输出能力)
  • 电源纹波抑制比(PSRR):75dB@120Hz(低频纹波抑制能力)
  • 满载压差:1.2V@1A(输入与输出的最小电压差,保障满载稳定)
  • 静态电流(Iq):5mA(无负载时的自身消耗电流)
  • 安全防护:过流保护、热关断(双重故障防护)
  • 工作温度:0℃~+150℃(结温范围,适应宽温环境)
  • 输出特性:单通道、正极输出
  • 品牌封装:GR(国睿)、SOT-223(表面贴装)

二、关键性能特性解析

1. 可调输出适配多场景

通过外部分压电阻网络可设定输出电压(典型参考电压1.25V,实际输出公式:(V_{out}=1.25V \times (1+\frac{R_2}{R_1}))),无需更换器件即可覆盖1.2V~15V(受输入电压限制)的输出范围,适配MCU、传感器、显示模块等不同电压需求的电路。

2. 低频纹波抑制能力突出

75dB@120Hz的PSRR可有效抑制市电整流后的100/120Hz低频纹波,减少噪声对精密电路的干扰,适合音频设备、医疗仪器、工业传感器等对纹波敏感的场景。

3. 满载压差降低输入裕量

满载1A时压差仅1.2V,意味着输入电压只需比输出电压高1.2V即可稳定输出,降低了对输入电源的电压裕量要求,尤其适合电池供电设备(如升压后稳压)。

4. 双重防护保障可靠性

  • 过流保护:输出电流超过1.5A(典型触发值)时自动限流,防止负载短路/过载损坏;
  • 热关断:结温超过160℃~180℃时自动关断,温度回落至安全范围后恢复,避免器件过热烧毁。

三、典型应用场景

  1. 消费电子便携设备:SOT-223封装体积小,适合智能手机、蓝牙音箱、智能手环的辅助电源(如给低功耗MCU供电);
  2. 工业控制自动化:宽结温范围适应机床、PLC控制器等工业现场的高低温环境,1A输出满足小型继电器、传感器的供电需求;
  3. 通信网络设备:PSRR特性抑制电源纹波,适配路由器、交换机的稳压模块,保障信号传输稳定;
  4. 医疗电子仪器:低纹波、过流保护可提升血压计、血糖仪等设备的可靠性,避免故障影响检测精度。

四、封装与热管理设计

  • SOT-223封装优势:尺寸约6.5mm×3.5mm×1.5mm,占用PCB面积小,适合高密度电路设计;引脚布局简单,焊接工艺成熟;
  • 热管理建议:SOT-223封装热阻约120℃/W,若功耗((P=(V_{in}-V_{out}) \times I_{out}))超过1W,需在PCB上增加散热铜箔(将引脚焊盘连接到大面积地平面),或加装小型散热片,避免结温过高触发热关断。

五、应用设计注意事项

  1. 压差满足要求:输入电压必须比输出电压至少高1.2V(满载1A时),否则输出电压会跌落;
  2. 分压电阻选择:推荐用1%精度金属膜电阻,(R_1)选1kΩ~10kΩ(避免阻值过大影响输出精度),(R_2)按目标电压计算;
  3. 电容配置:输入并联10μF电解电容(或22μF陶瓷电容),输出并联22μF电解电容(或10μF陶瓷电容),提升稳定性;
  4. 功耗控制:若功耗超过0.5W,需加强散热设计,避免结温超过150℃。

GR AMS1117-ADJ凭借可调输出、宽温适应性和双重防护,成为中低功率稳压场景的高性价比选择,适用于消费、工业、医疗等多领域电路设计。

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