WMSIC Electronic Components

ETA ETA1090D3M

ModelETA1090D3M
PackageDFN3x3-12
BrandETA
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
ETA ETA1090D3M
Type
ETA
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ETA
Electronic Component
ETA1090D3M
Electronic Component
1
Package
DFN3x3-12
Type
DC-DC
Electronic Component
LEDDriver
Electronic Component
PWM
Electronic Component
0.101g
Electronic Component
1
Channel Count
1
Features
(OVP); (OTP); (SCP)
Electronic Component
BM0226462232
Operating Temperature
40℃~+85℃
Switching Frequency
750kHz~1.25MHz
Electronic Component
Electronic Component

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

ETA1090D3M 产品概述

一、概述

ETA1090D3M 是钰泰(ETA)推出的一款小体积升压型 DC-DC 转换器,采用升压拓扑并集成功率开关管,面向对体积、成本和输出电流有较高要求的便携式与工业电子产品。器件支持宽输入电压范围(DC 1.9V~5.5V),单通道输出,最高可提供 3A 输出能力,开关频率在 750kHz~1.25MHz 范围内可工作,封装为 DFN3x3-12,工作温度范围 -40℃~+85℃,并具备过温保护(OTP)与短路保护(SCP),适用于要求高功率密度和可靠性的设计场景。

二、主要规格

  • 拓扑结构:升压(Boost)
  • 工作电压(Vin):DC 1.9V ~ 5.5V
  • 输出电流:最大 3A(单通道)
  • 通道数:1
  • 开关管:内置(集成功率开关)
  • 开关频率:750kHz ~ 1.25MHz
  • 工作温度:-40℃ ~ +85℃
  • 保护功能:过温保护(OTP),短路保护(SCP)
  • 封装:DFN3x3-12
  • 类型:DC-DC 升压转换器
  • 品牌:ETA(钰泰)

三、功能特点

  • 内置功率开关,简化外部功率器件选型与布局,便于小尺寸 PCB 设计。
  • 宽输入电压范围,可直接由单节锂电池、碱性电池或低电压电源供电,应用灵活。
  • 高开关频率(可达 1.25MHz)有利于减小外部电感与滤波电容体积,实现高功率密度设计;同时支持较低频率运行以优化效率。
  • 具备短路保护和过温保护,提高系统在异常工作情况下的安全性与可靠性。
  • DFN3x3-12 小封装,适合空间受限的便携与嵌入式设备。

四、典型应用场景

  • 单节锂电池(或低压电源)升压至 USB、通信模块或微处理器所需电压的电源方案。
  • 可充电电源、便携式设备(如蓝牙耳机、便携音箱、数码产品)中的升压电源管理。
  • 驱动白光 LED 或小功率 LED 阵列(需配合适当的电流控制方案)。
  • 工业传感器、物联网终端(IoT)、可穿戴设备等,对体积和效率有要求的低功耗系统。

五、设计与布局建议

  • PCB 布局:开关器件周围的电流回路应尽量缩短,输入电容、输出电容与器件引脚应紧密放置以降低寄生电阻与电感。对 DFN 封装,建议在焊盘下方或周围保留足够铜箔并采用热过孔增强散热。
  • 输入/输出电容:选择低 ESR 的陶瓷电容并靠近器件 VIN、VOUT 引脚布置,以抑制开关噪声与电压尖峰。
  • 电感选型:根据工作电流与开关频率选择低 DCR、能够承受峰值电流的电感,注意饱和电流要高于峰值电流以防效率下降或失稳。
  • 整流/同步:若需更高效率,可考虑使用带同步整流功能的器件或外部方案;若采用非同步方案,应选用低压降肖特基二极管并合理布局。
  • 滤波与 EMI:高开关频率有利于减小滤波元件,但同时可能增加 EMI。必要时在输入侧或输出侧增加差分/共模滤波器或屏蔽措施。

六、热管理与可靠性

  • 封装与面积:DFN3x3-12 封装有利于热量通过焊盘传导至 PCB。为保证在 3A 输出下的稳定工作,应在 PCB 上增加散热铜箔面积,并使用热过孔将热量传导至内层/背面铜层。
  • 工作温度:器件额定工作温度为 -40℃~+85℃,在高温环境或高负载条件下需评估功率损耗与结温上升,必要时降低平均输出功率或改进散热。
  • 保护机制:内置 OTP 与 SCP 提高了异常工作时的保护能力,但设计时仍需避免长期在过载或短路条件下工作,以延长器件寿命。

七、选型与应用注意事项

  • 确认输出要求:根据目标系统的输出电压与最大输出电流(最大 3A),评估器件在不同输入电压下的工作能力与效率曲线,必要时在实际工况下验证热性能和稳定性。
  • 频率与效率权衡:选择合适的开关频率(750kHz~1.25MHz)以在体积、成本与效率间取得平衡;更高频率可减小外部元件体积,但可能带来效率下降与更严格的 EMI 控制要求。
  • PCB 与元件并行:为获得最佳性能,建议参考厂商参考设计与评估板(若有),并在样机阶段进行布局、热和 EMI 的综合测试。
  • 系统保护:虽然器件具备 OTP 与 SCP,仍建议在系统层面加入输入过压、输出短路隔离或保险元件,以提升整机可靠性。

总结:ETA1090D3M 是一款面向紧凑型升压电源应用的高频、小封装、内置开关的单通道升压转换器,适合单节电池与低压电源升压到中低功率输出的场景。合理的 PCB 设计、散热措施与外部元件搭配,是发挥其 3A 输出能力与长期可靠性的关键。

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