WMSIC Electronic Components

LX TL494CDR(LX) TL494CDR

ModelTL494CDR(LX)
PackageSOP16
BrandLX
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
LX TL494CDR(LX)
Type
LX
Minimum package
4000 卷

Technical parameters

Electronic Component
LX
Electronic Component
TL494CDR(LX)
Electronic Component
1
Package
SOP16
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.276g
Electronic Component
1
Features
Frequency Synchronous
Electronic Component
BM0264498271
Operating Temperature
40℃~+85℃
Operating Voltage
7V~40V
Switching Frequency
1kHz~300kHz
Electronic Component
Electronic Component
Output Current
200mA
Output Channel Count
2
Static Current(Iq)
6mA

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

TL494CDR(LX) DC-DC电源控制芯片产品概述

灵星芯微(LX)推出的TL494CDR(LX)是一款基于经典TL494架构优化的中小功率DC-DC电源控制IC,采用SOP16贴片封装,以宽电压输入、可调开关频率及工业级温宽为核心特性,广泛适配车载、工业、消费电子等多场景的开关电源设计需求。

一、核心身份与架构定位

TL494CDR(LX)属于双端开关电源控制器件,内置振荡器、双误差放大器、PWM比较器、死区时间控制电路及软启动功能(兼容传统TL494的通用特性),无需复杂外围即可实现推挽拓扑的高效电源设计。作为灵星芯微针对中小功率市场推出的高性价比产品,其引脚定义与传统TL494完全兼容,便于现有设计的替换升级。

二、关键参数的场景适配性

1. 宽电压输入范围(7V~40V)

覆盖车载12V/24V系统(怠速时输入约10V,启动峰值达28V)、工业24V辅助电源(波动范围18V~36V)及部分消费电子12V适配器,无需额外降压/升压电路即可直接驱动,简化系统架构。

2. 可调开关频率(1kHz~300kHz)

  • 低频段(1kHz~10kHz):适合对噪声敏感场景(如音频设备、精密仪器电源),降低电磁干扰(EMI);
  • 中高频段(100kHz~300kHz):适配小体积设计(如便携充电器、车载隐藏式电源),减小变压器、电感尺寸,提升功率密度。

3. 工业级工作温宽(-40℃~+85℃)

满足户外设备(安防监控电源)、车载电子(发动机舱高温)及工业控制柜(内部散热环境)的严苛要求,避免极端温度下性能衰减。

4. 推挽式拓扑结构

区别于单端拓扑(如反激),推挽拓扑通过双开关管交替导通,使变压器初级双向励磁,具有电流应力小、效率高(典型85%以上)的优势,适合10W~200W中小功率设计,规避单端拓扑的磁偏磁问题。

三、典型应用场景

  1. 车载电源:汽车中控屏、LED车灯驱动、车载充电器的辅助电源,适配12V/24V输入及宽温宽;
  2. 工业控制:PLC、伺服驱动器的辅助供电模块,宽电压满足工业电网波动;
  3. 消费电子:50W以内手机/平板充电器、LED照明驱动,高频设计实现小型化;
  4. 通信模块:4G/5G小基站、路由器辅助电源,稳定输出适配低噪声需求。

四、封装与可靠性设计

TL494CDR(LX)采用SOP16贴片封装,引脚间距1.27mm,兼容常规贴片焊接工艺,PCB布局灵活(适合高密度设计)。灵星芯微内置±2kV人体模式ESD防护及过流保护逻辑(外围电阻可设置),提升抗干扰能力与实际可靠性。

五、应用选型注意事项

  1. 频率设置:通过RT(振荡电阻)与CT(振荡电容)组合调整频率,电容需选≥16V耐压;
  2. 死区时间:需根据频率调整(1μs~5μs),避免双开关管同时导通短路;
  3. 替换兼容:兼容传统TL494引脚,替换时需确认外围元件参数匹配。

总结:TL494CDR(LX)以高性价比、宽适配性及工业级可靠性,成为中小功率开关电源设计的主流选择,尤其适合对温宽、噪声及体积有明确要求的场景。

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