WMSIC Electronic Components

ADI/LINEAR LT3494EDDB#TRPBF LT3494EDDB

ModelLT3494EDDB#TRPBF
PackageDFN-8(2x3)
BrandADI/LINEAR
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
ADI(Analog Devices) / LINEAR LT3494EDDB#TRPBF
Type
ADI/LINEAR
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ADI(Analog Devices) / LINEAR
Electronic Component
LT3494EDDB#TRPBF
Electronic Component
1
Package
DFN-8(2x3)
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.262g
Electronic Component
1
Features
Dynamic Voltage; Load
Type
Electronic Component
Synchronous
Electronic Component
Electronic Component
BM0264971242
Operating Temperature
40℃~+85℃@(TA)
Operating Voltage
2.3V~16V
Electronic Component
Electronic Component
Output Voltage
2.3V~40V

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

LT3494EDDB#TRPBF DC-DC升压电源芯片产品概述

LT3494EDDB#TRPBF是亚德诺半导体(ADI)旗下Linear产品线推出的高集成度升压型DC-DC电源芯片,针对电池供电设备、工业控制及空间受限场景优化,以低静态电流、宽输入输出范围、可调输出为核心优势,可满足多样化的电压转换需求。

一、产品核心定位与典型应用

该芯片聚焦低功耗便携设备与工业级场景,典型应用包括:

  1. 电池供电类:血糖仪、血压计等便携医疗设备,智能穿戴(如运动手环辅助供电),无线传感器节点;
  2. 工业控制类:工业传感器模块、PLC辅助电源、车载电子(如仪表盘背光驱动);
  3. 其他场景:LED驱动(可调输出适配不同LED串)、射频模块供电(24V/30V等中高压需求)。

二、关键电气参数解析

LT3494的核心参数覆盖了低功耗与宽范围的核心需求:

  • 输入电压范围:2.3V~16V,兼容单节锂电池(3.7V)、2节AA电池(3V)、锂亚电池(3.6V),甚至更高电压直流电源,适配多种供电来源;
  • 输出电压范围:2.3V~40V(可调),从低电压(如传感器3.3V)到中高压(如LED串12V/24V)均能覆盖,无需更换芯片即可满足不同负载需求;
  • 静态电流(Iq):仅65μA,远低于同类异步升压芯片平均水平,是电池供电设备延长待机时间的关键(如纽扣电池供电传感器可待机数月);
  • 工作温度:-40℃~+85℃(环境温度TA),符合工业级温度标准,可在户外、车载等恶劣环境下稳定工作;
  • 内置开关管:无需外置MOSFET,简化电路设计,降低物料成本与PCB空间占用。

三、拓扑结构与效率特点

LT3494采用升压式异步整流拓扑(同步整流:否),针对轻载场景优化:

  • 轻载时(如待机状态),低静态电流成为核心优势,待机功耗比同类芯片降低80%以上;
  • 中载时(如设备工作状态),效率维持在85%~90%(典型值),满足多数设备功率需求;
  • 内置软启动功能,有效抑制上电浪涌电流,保护电池与负载。

四、封装与引脚配置

采用DFN-8(2mm×3mm)封装,具有以下特点:

  • 尺寸极小:仅2mm×3mm,厚度约0.75mm,适合便携设备、小型模块紧凑布局;
  • 引脚数少:8引脚设计,关键引脚包括VIN(输入)、GND(地)、SW(开关节点)、FB(反馈)、EN(使能)等,电路设计简单,无需复杂外围;
  • 散热性能:DFN封装热阻低,可通过PCB铜箔有效散热,满足小功率升压需求。

五、输出电压可调性设计

LT3494输出电压通过外部电阻分压网络实现可调,核心原理为:

  • FB引脚参考电压为0.8V(典型值),输出电压公式:( V_{OUT} = 0.8V \times (1 + \frac{R_{TOP}}{R_{BOTTOM}}) );
  • 只需选择合适的上拉电阻(R_TOP)与下拉电阻(R_BOTTOM),即可设置2.3V~40V之间任意输出电压,灵活性极高。

六、品牌与可靠性优势

作为ADI旗下Linear产品线产品,LT3494具有:

  • 高可靠性:经过严格工业级测试,可长期稳定工作;
  • 技术支持:配套完善datasheet与应用笔记,方便工程师快速设计;
  • 量产稳定性:采用成熟制造工艺,批次一致性好,适合大规模量产。

总结

LT3494EDDB#TRPBF以低静态电流(65μA)、宽输入输出范围(2.3V16V输入/2.3V40V输出)、可调输出、小封装DFN-8为核心优势,完美适配电池供电设备低功耗需求与工业场景宽温要求,是便携医疗、工业传感器、车载电子等领域的理想升压电源解决方案。

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