WMSIC Electronic Components

LOWPOWER LP6498AB6F

ModelLP6498AB6F
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
LOWPOWER LP6498AB6F
Type
LOWPOWER
Minimum package
3000 编带

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LOWPOWER
Electronic Component
LP6498AB6F
Electronic Component
1
Package
SOT-23-6
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.025g
Electronic Component
1
Type
Electronic Component
Synchronous
Electronic Component
Electronic Component
BM0229362027
Operating Temperature
20℃~+85℃@(TA)
Operating Voltage
4.5V~30V
Switching Frequency
600kHz
Electronic Component
Electronic Component
Output Voltage
800mV~12V

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

LP6498AB6F 产品概述

一、产品简介

LP6498AB6F 是微源半导体(LOWPOWER)推出的一款降压型同步整流 DC-DC 转换器,采用降压拓扑并集成功率开关,工作电压范围宽(4.5V~30V),可将输入电压高效降至 0.8V~12V 的可调输出。器件采用 SOT-23-6 小封装,适合空间受限的应用场合。

二、主要性能指标

  • 功能类型:降压型(Buck)
  • 输入电压范围:4.5V ~ 30V
  • 输出电压范围:0.8V ~ 12V(可调)
  • 输出电流:最大 1.2A
  • 开关频率:600kHz
  • 静态电流(Iq):8mA
  • 同步整流:内置(同步 MOSFET)
  • 开关管:内置
  • 工作温度:-20℃ ~ +85℃(TA)
  • 输出通道数:1 通道

三、封装与引脚

器件采用 SOT-23-6 封装,体积小、引脚数适中,便于在小型 PCB 上布局。典型应用中应注意开关结点和功率回流路径的走线最短并加大铜箔面积以利散热。

四、应用场景

  • 移动与便携设备的点对点电源
  • 车载电子、工业控制的中低压降压电源(符合输入电压条件)
  • USB 供电或从高压母线降压到 MCU、传感器供电
  • 板载点负载(POL)转换场合

五、设计与选型建议

  • 反馈:输出可调,参考器件内部参考电压 0.8V,通过外部分压电阻设定输出电压。
  • 电感选择:根据输出电流和允许电流纹波选择合适电感,电感饱和电流需高于最大输出电流。
  • 电容选择:输入侧建议采用低 ESR 陶瓷电容以抑制开关噪声;输出侧采用多片并联陶瓷电容以降低输出纹波。
  • 布局要点:VIN 与地、器件 GND、输入电容应靠近器件引脚;开关节点(SW)走线短且远离敏感信号;增加散热铜箔以提高功率处理能力。

六、热管理与保护(设计注意)

SOT-23-6 封装散热能力有限,持续大电流工况下需关注结温升高。推荐在 PCB 布局中增加散热铜区并保证良好空气对流。器件常见应用中会配合必要的过流、短路检测与热关断策略,具体保护机制请参阅最新数据手册以确认详细行为。

七、典型应用电路说明

典型应用电路由 VIN、输入滤波电容、LP6498AB6F 芯片、外接电感、输出滤波电容与分压反馈网络组成。外部元件需按数据手册推荐值和PCB工艺调整,保证稳定性与效率。

总结:LP6498AB6F 以其宽输入电压、可调输出范围、内置同步整流与小型封装,适合多种中低功率降压场景。选型与布局时重点关注外部电感、电容的规格与 PCB 热管理,以获得最佳性能。有关更详细参数与典型波形,请参考产品数据手册。

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