WMSIC Electronic Components

ETA ETA9338D3M

ModelETA9338D3M
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
ETA ETA9338D3M
Type
ETA
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ETA
Electronic Component
ETA9338D3M
Electronic Component
1
Package
DFN3X3-12
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.119g
Electronic Component
1
Features
EMI Optimization
Type
Electronic Component
Synchronous
Electronic Component
Electronic Component
BM0264800403
Operating Temperature
40℃~+85℃
Operating Voltage
2.6V~5.5V
Switching Frequency
1.5MHz
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.

ETA9338D3M 多通道同步降压转换器产品概述

一、产品定位与核心优势

ETA9338D3M是钰泰半导体针对多电源域便携/物联网设备推出的3通道同步降压转换器,核心定位为“小体积、高集成、高效率”的电源管理方案,核心优势包括:

  1. 集成度突破:3独立降压通道+内置同步MOSFET,无需外置开关管,减少BOM数量与PCB面积;
  2. 效率优异:同步整流架构(低导通电阻MOS),轻载效率≥85%,满载效率≥90%(典型值);
  3. 高频紧凑:1.5MHz开关频率,外围仅需小封装电感(1μH~2.2μH)与陶瓷电容,适配轻薄设计;
  4. 灵活可调:每通道输出电压独立可调(0.8V~输入电压),覆盖MCU、传感器、无线模块等多电压需求。

二、关键参数与拓扑特性

2.1 输入输出范围

  • 输入电压:2.6V~5.5V,兼容锂电池(3.7V/4.2V)、USB 5V供电;
  • 输出能力:每通道最大输出电流1.5A(用户指定),输出电压可调(0.8V基准,通过电阻分压设置:(V_{out}=0.8V \times (1+R_{top}/R_{bottom})));
  • 输出精度:室温下±1%,负载调整率±0.5%,线调整率±0.3%,满足精密供电需求。

2.2 拓扑与控制

采用同步降压(Buck)拓扑,内置上下管MOSFET(典型导通电阻:上管12mΩ,下管8mΩ),无外置开关管需求;固定1.5MHz开关频率,远离AM广播频段(0.535MHz~1.7MHz),EMI表现优异,无需额外滤波。

2.3 保护机制

内置多重安全保护,提升系统可靠性:

  • 欠压锁定(UVLO):输入电压<2.4V时关断,防止低电压误工作;
  • 过流保护(OCP):逐周期限流,满载时自动重启;
  • 过压保护(OVP):输出电压>设定值15%时关断;
  • 热关断(TSD):结温>160℃时关断,降温后自动恢复。

三、多通道设计的应用适配性

ETA9338D3M的3通道具备独立可配置性,适配多电源域场景:

  • 智能穿戴:通道1→MCU核(1.8V)、通道2→蓝牙模块(3.3V)、通道3→心率传感器(2.5V);
  • 物联网节点:通道1→微控制器(3.0V)、通道2→LoRa模块(2.8V)、通道3→温湿度传感器(1.2V);
  • 便携医疗:通道1→处理器(1.5V)、通道2→显示模块(3.3V)、通道3→血糖传感器(2.0V);
    每通道支持单独使能(EN引脚),静态电流<10μA,延长电池续航。

四、封装与热管理

采用DFN3×3-12封装(尺寸3.0mm×3.0mm×0.75mm),引脚间距0.5mm,符合RoHS无铅标准:

  • 底部外露焊盘直接连接PCB铜箔,有效降低结温;
  • 满载1.5A时,结温典型值<100℃(环境温度25℃,PCB铜箔面积≥10cm²);
  • 小体积适配高密度PCB设计,满足便携设备轻薄化需求。

五、典型应用场景

ETA9338D3M广泛应用于:

  1. 智能穿戴:手环、手表、TWS充电盒;
  2. 物联网终端:环境监测节点、智能门锁、智能家居控制器;
  3. 便携消费电子:蓝牙音箱、移动电源扩展、小型游戏机;
  4. 工业物联网:低功耗传感器节点、小型数据采集器。

六、可靠性与环境适应性

  • 工作温度:-40℃~+85℃(工业级扩展,适配户外/ harsh环境);
  • 可靠性测试:通过ESD(HBM 2kV、MM 200V)、浪涌(24V/1A)测试,符合EMC标准;
  • 长期稳定性:内置补偿电路,输出电压波动极小,满足7×24小时稳定供电需求。

ETA9338D3M通过高集成度与灵活设计,解决了多电源域设备的“小体积与多通道兼容”痛点,是便携电子、物联网领域的优选电源方案。

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