WMSIC Electronic Components

LOWPOWER LP6470B6F

ModelLP6470B6F
PackageSOT-23-6
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 24+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
LOWPOWER LP6470B6F
Type
LOWPOWER
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LOWPOWER
Electronic Component
LP6470B6F
Electronic Component
1
Package
SOT-23-6
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.024g
Electronic Component
1
Features
Electronic Component
Type
Electronic Component
Synchronous
Electronic Component
Electronic Component
BM0230633635
Operating Temperature
40℃~+85℃
Operating Voltage
3.5V~16V
Switching Frequency
600kHz
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.

LP6470B6F 产品概述

一、产品简介

LP6470B6F 是微源半导体(LOWPOWER)推出的一款高集成度降压型 DC-DC 开关稳压器,采用 SOT-23-6 小封装,面向空间受限且对效率和电流能力有要求的便携与嵌入式应用。芯片集成高侧、低侧开关管,采用同步整流拓扑,支持输入电压 3.5V ~ 16V,输出电压可调范围 0.8V ~ 12V,最大输出电流 2A,开关频率 600kHz,静态工作电流仅 450µA,工作温度范围 -40℃ ~ +85℃。

二、主要特性

  • 降压型 (同步整流) 拓扑,内置功率管,简化外部器件选择和布局;
  • 输入电压范围宽:3.5V ~ 16V,适配单节到多节电池及车载辅助电源;
  • 输出电压可调:0.8V ~ 12V,适合为核心电源和外设供电;
  • 最大输出电流 2A,可驱动中等功率负载;
  • 开关频率 600kHz,利于减小外部电感与电容体积;
  • 低静态电流 Iq = 450µA,适合注重待机能耗的系统;
  • 工作温度范围 -40℃ ~ +85℃;
  • 封装:SOT-23-6,适合批量生产与板上空间受限场合。

三、典型应用场景

  • 手持设备、便携式仪器的主/辅助稳压电源;
  • 数字系统的核心电源(MCU、FPGA 低压域);
  • 工业与车载电子(辅助供电,需注意车载瞬态抑制);
  • 网络通信设备、传感器节点等对效率与功率密度有要求的场合。

四、设计要点与外部元件建议

  • 输出调整:通过外部反馈电阻网络设定输出电压(Vout = 0.8V × (1 + Rtop/Rbot))。
  • 电感选择:建议选用饱和电流高于 2A 的功率电感,电感量根据纹波与效率权衡,可在 1µH~10µH 范围内选型并验证实际效率与电流纹波。
  • 输入电容:建议采用低 ESR 陶瓷电容(例如 10µF~47µF,耐压需 ≥ 输入最大电压),靠近芯片 VIN 与 GND 布局。
  • 输出电容:低 ESR 陶瓷或混合电容(例如 22µF~100µF),以控制输出纹波并保证瞬态响应。
  • 布局注意:开关节点(SW)走线尽可能短,输入与输出电容、功率电感靠近芯片布局,强化功率回路的地环路,利于 EMI 控制与热散。
  • 热设计:SOT-23-6 封装热阻相对较高,大电流长时间工作时需注意 PCB 铜箔散热与接地平面扩展。

五、可靠性与使用建议

  • 启动与保护:器件具备基本的电源管理特性(如可调输出与同步整流带来的内在保护优势),设计时应关注输入瞬态、过流与过温工况的系统级防护;
  • 电磁兼容:由于 600kHz 的开关频率,做好输入滤波与开关节点的屏蔽、布局优化,可有效降低 EMI。
  • 封装与焊接:SOT-23-6 小封装利于自动贴片生产,但要控制回流焊温度曲线与焊盘设计以保证焊接可靠性。

六、总结

LP6470B6F 在小体积封装下提供了宽输入、可调输出与 2A 的输出能力,适合对体积、功耗和效率有综合要求的产品。得益于同步整流和 600kHz 的开关频率,能在较小外部元件体积下实现较高的能量密度。设计时注意输入/输出滤波、功率回路布局和热管理,即可在手持、工业及车载等多种场景中稳定应用。若需样片、详细数据手册或典型应用电路,请联系代理或厂商获取完整规格与 PCB 参考设计。

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