WMSIC Electronic Components

XBLW TL494CDTR

ModelTL494CDTR(XBLW)
PackageSOP-16
BrandXBLW
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
XBLW TL494CDTR(XBLW)
Type
XBLW
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
XBLW
Electronic Component
TL494CDTR(XBLW)
Electronic Component
1
Package
SOP-16
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.309g
Electronic Component
1
Features
Built-in LDORegulator
Electronic Component
BM0265621948
Operating Temperature
0℃~+70℃@(TA)
Operating Voltage
7V~40V
Switching Frequency
1kHz~200kHz
Output Voltage
5V
Output Current
200mA
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.

TL494CDTR(XBLW) 高性能双路降压开关电源控制器产品概述

一、产品定位与核心优势

TL494CDTR是芯伯乐(XBLW)针对小功率多通道电源需求优化的经典TL494架构升级控制器,聚焦宽电压适应性、双路独立输出、灵活拓扑配置三大核心方向,可覆盖工业控制、消费电子、汽车辅助电源等多场景。其核心优势包括:

  • 兼容传统TL494引脚定义,现有设计可直接替换;
  • 7V~40V宽输入覆盖主流直流供电系统;
  • 2路固定5V/200mA输出满足双路小功率负载需求;
  • 1kHz~200kHz宽频率调节适配不同EMC与体积要求。

二、关键技术参数详解

1. 输入输出性能

  • 输入电压:7V~40V,覆盖12V/24V/36V等工业/汽车主流电源(如PLC、车载蓄电池、通信备用电源),无需额外预降压;
  • 输出特性:2路独立固定5V输出,每路最大200mA,总功率达2W,满足传感器、MCU、显示模组等双路负载供电;
  • 输出精度:内置误差放大器保障输出精度±1%(典型值),避免负载波动导致的电压漂移。

2. 开关频率调节

内置振荡器支持1kHz~200kHz宽范围调节,通过外部RT/CT电阻电容灵活设置:

  • 低频段(1kHz~10kHz):适合EMC要求低、负载电流波动大的场景(如小型电池充电);
  • 中高频段(10kHz~200kHz):可缩小电感电容体积,适配紧凑PCB设计(如便携设备电源),兼顾效率与EMC性能。

3. 环境与封装

  • 工作温度:0℃~+70℃(环境温度TA),满足常规室内工业环境及消费电子温度要求;
  • 封装形式:SOP-16贴片封装(尺寸≈10mm×6mm),兼容自动化贴装,适合高密度PCB布局。

三、拓扑结构与电路设计

TL494CDTR采用降压式拓扑+推挽输出架构,配合外置开关管设计实现高效稳定转换:

  1. 推挽拓扑优势:
    • 外置N沟道MOS管(如IRF540),避免芯片内部开关损耗,整体效率达85%~90%;
    • 双开关管交替导通减少输出纹波,提升电压稳定性;
  2. 降压拓扑保障:
    • 固定5V输出无需额外反馈网络,简化电路设计;
    • 内置软启动功能(可选),抑制上电浪涌电流,保护负载与开关管。

四、典型应用场景

TL494CDTR的宽电压、双路输出特性适配多领域:

  1. 工业控制电源:为PLC、传感器节点、小型执行器提供12V转5V双路供电;
  2. 消费电子充电器:多口USB充电器的辅助电源模块(5V/200mA×2,为控制芯片供电);
  3. 汽车辅助电源:12V蓄电池转5V,为车载显示屏、行车记录仪提供双路稳定供电;
  4. LED驱动电源:小功率LED背光模组的双路恒压供电(5V/200mA×2);
  5. 通信设备:基站备用电源的小功率辅助模块,为监控电路供电。

五、可靠性与兼容性

  1. 可靠性设计:
    • 外置开关管降低芯片热应力,延长使用寿命;
    • 可选过流保护:通过电流检测电阻实现负载过流时关断输出,保护负载与电源;
  2. 兼容性:
    • 引脚与经典TL494完全兼容,现有设计可直接替换,无需修改PCB;
    • 适配MOS管、IGBT等外置开关管,用户可根据功率需求灵活选型。

总结

TL494CDTR(XBLW)凭借宽电压输入、双路固定输出、灵活频率调节及SOP-16封装优势,成为小功率多通道电源设计的高性价比选择,适用于工业、消费电子、汽车等多领域,可有效简化电路设计、降低成本。

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