WMSIC Electronic Components

XBLW UC3844BDTR

ModelUC3844BDTR(XBLW)
PackageSOP-8
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
XBLW UC3844BDTR(XBLW)
Type
XBLW
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
XBLW
Electronic Component
UC3844BDTR(XBLW)
Electronic Component
1
Package
SOP-8
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.207g
Electronic Component
1
Features
Electronic Component
Electronic Component
BM0265621915
Operating Temperature
0℃~+70℃@(TA)
Operating Voltage
8.5V~30V
Switching Frequency
52kHz
Output Current
1A
Output Channel Count
1
Electronic Component
Electronic Component

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

UC3844BDTR(芯伯乐XBLW)开关电源PWM控制芯片产品概述

一、产品定位与核心功能

UC3844BDTR是芯伯乐(XBLW)推出的电流模式PWM控制芯片,专为中小功率开关电源设计,核心作用是通过精准的脉冲宽度调制实现电源输出电压/电流的稳定调节。支持离线式反激、正激拓扑结构,可覆盖从5W到300W的电源应用场景,是替代传统线性电源的高效解决方案,能有效降低电源损耗、缩小体积。

二、品牌与封装规格

  • 品牌背景:芯伯乐(XBLW)是国内专注电源管理芯片的厂商,产品以高可靠性、成本优势著称,广泛应用于消费电子、工业控制、车载电子等领域,其芯片性能与国际主流品牌兼容。
  • 封装形式:采用SOP-8(小外形8引脚封装),引脚布局与国际标准UC3844完全兼容,便于现有电路的直接替换。引脚功能包括:补偿端(COMP)、反馈端(FB)、电流检测端(CS)、振荡端(RT/CT)、输出端(OUT)、电源端(VCC)、地(GND)、基准电压端(VREF)。

三、关键参数与性能特点

1. 环境与可靠性参数

  • 工作温度范围:0℃~+70℃(环境温度TA),满足商业级电源产品的常温运行要求;
  • 存储温度:-55℃~+125℃,符合电子元器件标准存储条件;
  • 静电防护(ESD):人体模式(HBM)±2kV,符合行业基本防护要求。

2. 核心电气参数

  • 输入电压范围:10V~30V(典型工作电压15V);
  • 振荡频率:通过外接RT(电阻)、CT(电容)可调节(典型100kHz~500kHz);
  • 电流检测阈值:典型1V(峰值电流限制,保护功率管);
  • 内置基准电压:5V±1%(精度高,无需额外基准芯片);
  • 欠压锁定(UVLO):启动电压≈16V,关断电压≈10V(防止低电压下异常工作);
  • 软启动功能:上电时自动限制输出占空比(0→100%渐变),避免浪涌电流冲击。

3. 性能优势

  • 电流模式控制响应速度比电压模式快3~5倍,负载突变时输出稳定时间≤10ms;
  • 内置过流保护(OCP)、过温保护(OTP),提升电源系统可靠性;
  • SOP-8封装散热性能满足中小功率需求,无需额外散热器(100kHz下损耗≈0.5W)。

四、典型应用场景

UC3844BDTR的兼容性与稳定性使其适用于多种电源产品:

  1. 消费电子适配器:笔记本电脑、显示器、机顶盒、路由器的开关电源;
  2. LED驱动电源:低功率LED路灯、面板灯、球泡灯的恒流/恒压驱动;
  3. 工业控制电源:PLC模块、传感器、小型电机驱动的辅助电源;
  4. 车载电子电源:车载充电器、行车记录仪、倒车影像的12V转5V/12V电源(适配车内常温场景);
  5. 通信电源:基站小功率模块、光纤收发器的电源单元。

五、选型与替换注意事项

  1. 兼容型号:与TI(德州仪器)UC3844、ON(安森美)UC3844等国际品牌引脚兼容,可直接替换(需确认温度范围匹配);
  2. 替换要点:若原设计为工业级(-40℃+85℃),需确认应用场景温度是否在0℃+70℃范围内,否则需更换工业级版本;
  3. 电路优化:RT/CT参数需与原设计一致,避免振荡频率偏移;CS端需串联10Ω~100Ω电阻,配合滤波电容实现电流检测稳定。

六、总结

UC3844BDTR(芯伯乐XBLW)作为一款高性价比的电流模式PWM控制器,凭借兼容国际标准、稳定的性能参数、宽应用场景覆盖,成为中小功率开关电源设计的优选方案。其SOP-8封装便于焊接与替换,内置的保护功能提升了电源系统的可靠性,适合对成本敏感且需要稳定性能的电源产品设计。

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