WMSIC Electronic Components

ST ST1S41PUR

ModelST1S41PUR
PackageVFQFPN-8L(4x4)
BrandST
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
ST(STMicroelectronics) ST1S41PUR
Type
ST
Minimum package
4500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ST(STMicroelectronics)
Electronic Component
ST1S41PUR
Electronic Component
1
Package
VFQFPN-8L(4x4)
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.1g
Electronic Component
1
Type
Electronic Component
Synchronous
Electronic Component
Electronic Component
BM0264974353
Operating Temperature
40℃~+150℃@(TJ)
Operating Voltage
4V~18V
Switching Frequency
850kHz
Electronic Component
Electronic Component
Output Voltage
800mV~18V

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

ST1S41PUR 降压型DC-DC电源芯片产品概述

一、产品定位与核心优势

ST1S41PUR是意法半导体(ST)推出的同步降压型DC-DC电源芯片,专为中功率、紧凑空间场景设计,核心优势聚焦于「宽适配、高集成、小体积、低功耗」:

  • 宽输入输出电压覆盖多类电源系统;
  • 内置同步整流与开关管,简化外部电路;
  • 高频设计缩小电感电容体积,适配紧凑PCB;
  • 低静态电流满足待机低功耗需求;
  • 宽结温范围适应极端环境,可靠性突出。

二、关键参数与性能指标

ST1S41PUR的参数精准匹配中功率电源需求,核心指标如下:

  • 输入电压:4V~18V,兼容锂电池(4.2V典型)、12V工业电源、15V适配器等;
  • 输出电压:800mV~18V(可调),通过外部分压电阻灵活设置,适配MCU、传感器等不同负载;
  • 输出电流:最大4A,覆盖小型电机、显示模组、通信模块等中等功率应用;
  • 静态电流(Iq):1.5mA,轻载/待机状态下保持低功耗,延长电池设备待机时间;
  • 开关频率:850kHz,高频设计显著减小电感/电容体积,降低输出纹波;
  • 内置开关管:无需外接功率MOSFET,简化BOM与电路设计。

三、拓扑结构与功能特性

ST1S41PUR采用降压式(Buck)拓扑,结合同步整流技术实现高效转换:

  • 同步整流:内置高低侧MOSFET替代续流二极管,大幅降低导通损耗,低输出电压场景效率提升明显;
  • 输出可调:FB引脚外接分压电阻,通过公式Vout = 0.8V × (1 + Rtop/Rbottom)精确设置输出,灵活适配多负载;
  • 高集成度:集成软启动、过流/过温保护(行业常见设计,适配可靠性需求),减少外部故障点;
  • 小封装适配:VFQFPN-8L(4×4mm)封装,引脚紧凑、散热优异,适合便携设备、小型工业控制器等空间受限场景。

四、典型应用场景

ST1S41PUR的特性使其适用于多领域:

  • 工业控制:PLC模块、传感器节点,适配12V/24V电源,-40℃~+150℃结温适应现场高低温;
  • 消费电子:便携医疗设备、智能家居终端,兼容锂电池供电,低Iq延长待机;
  • 通信设备:小型基站、无线AP,4A输出满足射频/基带芯片供电,小封装适配紧凑机箱;
  • 车载电子:车载显示屏、传感器模块(宽温特性支持车载环境)。

五、可靠性与环境适应性

ST1S41PUR的结温范围(TJ)-40℃~+150℃,可在极端温度下稳定工作(额定功率内无需额外散热);内置同步整流与开关管减少外部元件,进一步提升长期可靠性,适合工业、车载等对稳定性要求苛刻的场景。

综上,ST1S41PUR凭借宽电压覆盖、高集成度、小封装与宽温特性,成为中功率DC-DC转换的优选方案,可有效简化设计、降低成本并提升系统可靠性。

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