WMSIC Electronic Components

LOWPOWER LP3202AB5F

ModelLP3202AB5F
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 LP3202AB5F
Type
LOWPOWER
Minimum package
3000 编带

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LOWPOWER
Electronic Component
LP3202AB5F
Electronic Component
1
Package
SOT-23-5
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.046g
Electronic Component
1
Type
Electronic Component
Synchronous
Electronic Component
Electronic Component
BM0228979655
Operating Temperature
40℃~+85℃
Operating Voltage
2.5V~6V
Switching Frequency
1.5MHz
Electronic Component
Electronic Component
Output Voltage
610mV~6V

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

LP3202AB5F 产品概述

一、产品简介

LP3202AB5F 是 LOWPOWER(微源半导体)推出的一款高集成度降压型 DC-DC 转换器,采用降压拓扑并集成同步整流开关,封装为 SOT-23-5。器件支持可调输出、电流能力可达 2A,工作电压范围 2.5V 至 6V,输出电压可通过外部分压器在 0.61V 至 6V 之间调整,工作温度范围 -40℃ 至 +85℃,典型开关频率为 1.5MHz,静态电流仅 150µA,适合对尺寸、效率和静态功耗有较高要求的便携与嵌入式电源设计。

二、主要规格参数

  • 输出类型:可调(外部分压设置)
  • 拓扑结构:降压(同步整流)
  • 开关频率:1.5MHz(典型)
  • 工作电压 VIN:2.5V ~ 6V
  • 输出电压 VOUT:0.61V ~ 6V
  • 最大输出电流:2A(连续)
  • 静态电流 IQ:150µA(待机态)
  • 同步整流:内置,提高转换效率并降低热耗
  • 工作温度:-40℃ ~ +85℃
  • 封装:SOT-23-5
  • 输出通道数:1 路

三、核心优势

  • 高集成度:内置开关管与同步整流电路,外部器件数量少,PCB 面积小。
  • 高频开关(1.5MHz):允许使用更小的电感与输出电容,利于缩小整体方案体积。
  • 低静态电流:150µA 有利于降低待机功耗,适合电池供电应用。
  • 宽工作电压与可调输出:支持多种电源轨需求,输出可下调至 0.61V,适合核心电压供电。

四、典型应用场景

  • 手机配件、蓝牙耳机与便携式设备的电源管理
  • 工业便携仪器、手持设备
  • 单片机、FPGA、DSP 核心供电(需评估瞬态与纹波)
  • 电池供电系统、备用电源模块

五、设计与布局建议

  • 开关结点(SW)走线尽量短且避让敏感模拟信号,以减少 EMI 与环路面积。
  • 输入电容靠近 VIN 与 GND 引脚放置,采用低 ESR MLCC(例如 10µF 或更大)以抑制输入纹波。
  • 输出电容建议使用 X5R/X7R MLCC,容量 22µF~47µF(视负载与纹波要求调整),以保证瞬态响应与稳定性。
  • 电感选型:优先选用饱和电流高于 2A 的低 DCR 电感,典型值可在 0.68µH~2.2µH 范围内选择,兼顾纹波电流与体积。
  • 散热:SOT-23-5 封装需在 PCB 上预留散热铜箔与过孔(若有多层板),确保长期大电流工作时热量能有效导出。
  • 反馈网络:器件内部参考为 0.61V(610mV),输出电压依据 Vout = 0.61V × (1 + Rtop/Rbot) 设定,建议反馈电阻阻值总和适中以兼顾噪声与待机电流影响。

六、典型外部元件建议(参考)

  • 输入电容:10µF~22µF 陶瓷(X5R/X7R),耐压≥6.3V
  • 输出电容:22µF~47µF 陶瓷(X5R/X7R)或并联电解/固态以改善大电流及低频纹波
  • 电感:0.68µH~2.2µH,Isat ≥ 2.5A,DCR 尽可能低
  • 反馈电阻:按输出电压计算,建议 Rbottom 以 10kΩ 左右为起点,Rtop = Rbottom × (Vout/0.61 - 1)

总结:LP3202AB5F 以其 2A 输出能力、同步整流与 1.5MHz 高频率,在体积受限且需高效率的应用中具有明显优势。正确的布局与外部元件选择对于实现稳定、高效运行至关重要。若需针对具体电压、负载条件的参考电路或效率曲线,可进一步提供使用场景以便给出优化建议。

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