WMSIC Electronic Components

MSKSEMI MSDB628

ModelMSDB628
PackageSOT-23-6
BrandMSKSEMI
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
MSKSEMI MSDB628
Type
MSKSEMI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
MSKSEMI
Electronic Component
MSDB628
Electronic Component
1
Package
SOT-23-6
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.041g
Electronic Component
1
Type
Electronic Component
Synchronous
Electronic Component
Electronic Component
BM0230826847
Operating Temperature
40℃~+85℃@(TA)
Operating Voltage
2.5V~24V
Switching Frequency
1.2MHz
Electronic Component
Electronic Component
Output Type
Electronic Component

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

MSDB628 产品概述

一、简介

MSDB628 是美森科(MSKSEMI)推出的一款升压型开关稳压器,采用升压拓扑、内置开关管、非同步整流设计。器件支持宽工作电压范围 2.5V~24V,开关频率 1.2MHz,静态电流仅 70µA,输出为可调类型,单通道输出,工作环境温度 -40℃~+85℃,封装为 SOT-23-6,适合体积受限且需低静耗的升压场景。

二、主要特性

  • 宽输入电压:2.5V~24V,可直接驱动多种电池与电源。
  • 高频开关:1.2MHz 允许使用更小的电感与电容,利于小型化设计。
  • 低静态电流:Iq=70µA,适合电池供电及节能场合。
  • 内置开关管:减少外部元件,简化 PCB 布局与设计工作。
  • 非同步整流:结构简单,需外接肖特基二极管作为整流器件。
  • 可调输出:通过外部分压实现所需输出电压。

三、典型应用场景

  • 便携式设备与可穿戴终端的升压供电。
  • 远端传感器、物联网节点的电源管理。
  • 需要从单节或多节电池提升电压的工业与消费类设备。
  • 低功耗待机并要求快速瞬态响应的系统。

四、外部元件与电路建议

典型外部器件包括低 DCR 高饱和电流的功率电感、低正向压降的肖特基二极管、低 ESR 陶瓷电容以及反馈分压电阻。设计要点:

  • 电感选择:饱和电流 > 峰值开关电流,尽量选低 DCR 以降低损耗。
  • 整流二极管:优先选 Vf 低、恢复快的肖特基器件以提高效率。
  • 输入/输出电容:靠近芯片放置,减少回路面积,优先多层陶瓷电容组合以降低纹波。
  • 反馈网络:通过外部分压调整输出,具体分压比按器件数据手册的参考反馈电压计算。

五、布局与热管理

SOT-23-6 封装体积小,注意散热能力有限。布局要短且粗的电流回路,尽量把电感、肖特基、输出电容紧凑放置,输入电容靠近 VIN 和 GND 引脚,增加铜箔面积有助于热量散逸。高功率条件下评估温升并适当降额使用。

六、选型注意事项

因为为非同步整流,MSDB628 在高输出电流或较大升压比时效率会受整流二极管损耗影响;若对效率有更高要求,可考虑同步整流方案。选择器件时参考完整数据手册中的开关最大电流、热阻与反馈电压参数以保证稳定工作。

七、总结

MSDB628 以其宽输入电压、低静态电流和高开关频率,适合对尺寸和待机功耗有较高要求的升压场合。合理选择电感、肖特基和电容,并注意 PCB 布局与散热,可以在便携与工业应用中获得可靠且紧凑的升压解决方案。欲获取精确参数与典型电路,请参阅厂商数据手册。

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