WMSIC Electronic Components

SEMTECH SC189CSKTRT

ModelSC189CSKTRT
PackageSOT-23-5
BrandSEMTECH
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
SEMTECH SC189CSKTRT
Type
SEMTECH
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SEMTECH
Electronic Component
SC189CSKTRT
Electronic Component
1
Package
SOT-23-5
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.043g
Electronic Component
1
Features
Electronic Component
Type
Electronic Component
Synchronous
Electronic Component
Electronic Component
BM0264795529
Operating Temperature
40℃~+125℃@(TJ)
Operating Voltage
2.9V~5.5V
Switching Frequency
2.5MHz
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.

SC189CSKTRT 降压开关稳压器产品概述

一、产品核心定位与基本属性

SC189CSKTRT是Semtech公司推出的高集成度同步降压开关稳压器,针对低功耗、高密度电源设计场景优化,聚焦便携电子、工业控制、车载电子等领域的供电需求。产品内置功率开关管与同步整流器,采用固定1.2V输出设计,无需外部电阻调节,兼具小封装、宽电压范围、高效能等特点,是空间受限系统的理想电源解决方案。

二、关键性能参数详解

SC189CSKTRT的核心参数覆盖电源设计的关键维度,具体如下:

  • 输入输出范围:输入电压支持2.9V~5.5V宽区间,兼容单节锂电池(3.7V典型值)、USB 5V供电及其他低压直流电源;输出固定1.2V,最大输出电流1.5A,可满足多数低功耗MCU、FPGA、传感器等负载的供电需求。
  • 开关频率:2.5MHz高频设计,一方面可大幅减小外围电感、电容的尺寸(如电感可选用1μH2.2μH小型封装),降低系统占板面积;另一方面避开AM广播频段(530kHz1.7MHz),减少电磁干扰(EMI),简化系统EMI设计与认证流程。
  • 工作温度:结温(TJ)范围覆盖-40℃~+125℃,符合工业级温度标准,可稳定工作于户外、车载、高温车间等严苛环境。
  • 同步整流与内置开关管:内置同步整流器替代传统肖特基二极管,导通损耗降低约30%,转换效率提升至90%以上;同时集成高低侧功率MOSFET,无需外置开关管,进一步简化电路。
  • 封装形式:采用SOT-23-5超小型表面贴装封装,引脚数仅5个,尺寸约2.9mm×1.6mm×1.1mm,焊接兼容性好,适合批量自动化生产。

三、拓扑结构与内置功能优势

SC189CSKTRT采用降压式(Buck)拓扑结构,结合内置功能实现高效能与简化设计:

  • 降压拓扑:通过高频开关将输入电压降压至固定1.2V,适合将高输入电压(如5V)转换为低电压大电流输出,满足负载对低电压供电的需求。
  • 同步整流:内置的同步整流器与开关管同步切换,减少续流阶段的损耗,相比异步降压稳压器效率提升10%~15%,尤其在轻载与重载条件下均保持高效。
  • 固定输出:无需外部电阻分压调节输出电压,简化设计流程,同时提高输出电压精度(典型精度±1%),避免因外部元件误差导致的输出波动。

四、典型应用场景

SC189CSKTRT的参数特性使其适配多类应用场景:

  • 便携电子设备:智能手机、智能手表、蓝牙耳机、移动电源等,利用其小封装、宽输入电压(兼容锂电池)满足手持设备的空间与续航需求。
  • 工业控制模块:小型PLC、传感器节点、电机驱动辅助电源,适应工业级温度范围与低EMI要求,确保稳定工作。
  • 车载电子:车载信息娱乐系统、胎压监测模块、车载摄像头供电,满足车载环境的宽温与抗干扰需求。
  • 消费电子配件:USB供电的智能音箱、便携式医疗设备(如血糖监测仪),简化电源设计并降低成本。

五、核心竞争优势总结

SC189CSKTRT在同类产品中具有以下突出优势:

  1. 高集成度:内置功率管、同步整流器,外围仅需1个电感、2个电容,元件数量少,设计周期短。
  2. 小尺寸封装:SOT-23-5封装可将电源模块占板面积控制在10mm²以内,适合超薄、小型化设备。
  3. 高效节能:同步整流提升效率,延长电池续航(便携设备),降低功耗(工业/车载)。
  4. 宽温与抗EMI:工业级温度范围+2.5MHz高频设计,适配严苛环境与EMI认证要求。
  5. 成本优化:集成化设计减少外部元件,降低BOM成本与组装复杂度。

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