WMSIC Electronic Components

LOWPOWER LP3201AB5F

ModelLP3201AB5F
PackageSOT-23-5
BrandLOWPOWER
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
LOWPOWER LP3201AB5F
Type
LOWPOWER
Minimum package
3000 个

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LOWPOWER
Electronic Component
LP3201AB5F
Electronic Component
1
Package
SOT-23-5
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.039g
Electronic Component
1
Type
Electronic Component
Synchronous
Electronic Component
Electronic Component
BM0229970697
Operating Temperature
40℃~+85℃
Operating Voltage
2.5V~5.5V
Switching Frequency
1.5MHz
Electronic Component
Electronic Component
Output Voltage
610mV~5.5V

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

LP3201AB5F 产品概述

一、产品简介

LP3201AB5F 是微源半导体(LOWPOWER)推出的一款同步整流降压型 DC-DC 转换器,采用 SOT-23-5 小封装,输入电压范围宽(2.5V ~ 5.5V),输出电压可通过外部反馈电阻调整,典型最低输出约为 0.61V,最高可调至 5.5V。器件集成开关管,工作频率高达 1.5MHz,静态电流仅 60µA,适合对体积和待机功耗有严格要求的便携和电池供电系统。

二、主要技术参数

  • 输出类型:可调(外部分压设置)
  • 输入电压:2.5V ~ 5.5V
  • 输出电压范围:0.61V ~ 5.5V
  • 开关频率:1.5MHz(固定)
  • 同步整流:是(集成同步 MOSFET)
  • 开关管:内置
  • 静态电流(Iq):60µA
  • 连续输出电流:标称 1A(用于持续供电);有资料描述短时能力可达 2A,但最终以厂家数据手册为准
  • 工作温度:-40℃ ~ +85℃
  • 封装:SOT-23-5
  • 拓扑结构:降压型(Buck)

三、产品优势

  • 小体积封装(SOT-23-5),适合集成到空间受限的移动终端和模块化电源板上。
  • 1.5MHz 高开关频率,有利于使用小体积电感、电容,降低 BOM 体积与成本。
  • 同步整流设计极大提升轻载与中载时的转换效率,延长电池使用时间。
  • 低静态电流(60µA)适合需要长期待机或待机耗电敏感的应用场景。
  • 宽输入/输出调节范围,可为多种数字芯片、传感器和外围电路提供稳定电源。

四、典型应用

  • 可穿戴设备、手持终端、蓝牙耳机等便携式电子产品
  • 物联网节点、传感器供电模块
  • 单片机(MCU)及外围模组电源
  • 便携式仪器、低功耗消费类电子产品

五、参考选型与设计建议

  • 电感:1MHz+ 频率下,常选用 1.0µH ~ 4.7µH 的高饱和电流磁芯电感,确保在额定电流下不饱和并兼顾效率与纹波。
  • 输入/输出电容:建议在靠近芯片 VIN、VOUT 引脚放置低 ESR 固态或陶瓷电容,以降低换相噪声与输出纹波。典型值依负载与稳定性要求选择。
  • 反馈网络:使用高精度电阻设定输出电压,注意反馈节点走线短且靠近芯片,避免受噪声影响。
  • 布局:开关管、二极管(如外部需要)、电感与电容之间走线应尽量短,回流路径压降与辐射敏感区域减小,有利于 EMI 控制与热管理。
  • 热管理:SOT-23-5 封装散热能力有限,若长期大电流工作,应评估 PCB 散热、铜箔面积和布局以避免过热。

六、选型注意事项

  • 对于持续 2A 输出的需求,请以厂商发布的正式数据手册为准,确认器件的连续输出电流与热稳定特性;文档中参数有时会出现短时和连续能力的区别。
  • 评估系统效率与功耗:在轻载与待机场景下,低静态电流是关键;在重载场景下,查看效率曲线与热性能以保证稳定运行。
  • EMI 与滤波:高开关频率有利于被动元件小型化,但也需要更注重滤波与 PCB 层间布局以满足 EMC 要求。

七、结语

LP3201AB5F 以其小封装、低静态电流与同步整流优势,适合对体积与功耗敏感的便携与物联网应用。实际设计时,请参考并遵循厂商完整数据手册与评估板参考设计,结合负载、电感与滤波器选择,确保系统稳定与可靠。

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