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XBLW UC3842AN
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- XBLW UC3842AN(XBLW)
- Type
- XBLW
- Minimum package
- 50 管
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- XBLW
- Electronic Component
- UC3842AN(XBLW)
- Electronic Component
- 1
- Package
- DIP-8
- Electronic Component
- AC-DC Controllers and Regulators
- Electronic Component
- 0.73g
- Electronic Component
- 1
- Features
- (UVP)
- Electronic Component
- BM0265621917
- Electronic Component
- PWM
- Operating Temperature
- 0℃~+70℃
- Operating Voltage
- 30V
- Switching Frequency
- 500kHz
- Electronic Component
- Electronic Component
- Isolation
- Isolated
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
UC3842AN（XBLW芯伯乐）开关电源控制器产品概述
一、产品定位与核心特性
UC3842AN是XBLW（芯伯乐）针对中小功率开关电源推出的反激式拓扑优化PWM控制器，聚焦商业级环境下的稳定供电需求，整合高频调制、欠压保护、宽电压适配等核心功能，具备「高频高效、低耗散热、强驱动能力」三大核心优势，可简化电源电路设计并降低BOM成本。
二、关键电气参数详解
该控制器的参数针对反激拓扑做了针对性匹配，核心指标如下：
- 工作电压：额定30V，兼容10V~30V宽输入范围，适配不同供电系统的电压波动（如电网波动、电池供电）；
- 开关频率：固定500kHz高频设计，相比传统200kHz控制器可缩小变压器、电感体积30%以上，显著降低电源模块尺寸；
- 输出电流：最大1A峰值驱动电流，可直接驱动中小功率N沟道MOSFET（如IRF540、2N60等），无需额外驱动级；
- 耗散功率：典型1W低功耗，减少自身发热，无需额外散热片即可满足0℃~70℃工作温度；
- 最大占空比：96%高占空比，反激拓扑中可实现5V~24V宽输出电压范围，适配多类负载；
- 工作模式：固定频率PWM调制，输出纹波低、负载响应快，保证电源稳定性。
三、典型应用场景
UC3842AN的参数特性使其在以下场景表现突出：
- 中小功率适配器：如手机充电器、小型路由器电源（10W~20W输出），高频设计缩小体积；
- LED驱动电源：反激拓扑适配恒流/恒压需求，96%占空比支持宽电压输出，低纹波提升LED发光稳定性；
- 工业控制电源：0℃~70℃工作温度满足室内工业环境，欠压保护防止输入异常损坏设备；
- 小型电源模块：DIP-8封装便于集成，适合批量生产的标准化电源设计。
四、保护功能与可靠性设计
该控制器内置欠压保护（UVP） 核心功能：当输入电压低于16V阈值时，自动停止PWM输出，避免MOSFET过流、变压器饱和等故障；同时，1W低耗散功率配合DIP-8封装的散热面积，可保证长时间满负荷工作的可靠性（满负荷工况下可搭配小型散热片进一步提升）。
五、封装与生产适配
采用DIP-8通孔封装，具备以下优势：
- 兼容手工/批量生产：通孔设计便于原型开发的手工焊接，也适配自动化贴装产线；
- 安装灵活：直接插装PCB板，无需特殊焊接工艺，降低生产门槛；
- 散热可靠：引脚与PCB连接面积大，可有效传导热量，满足商业级散热需求。
总结
UC3842AN（XBLW芯伯乐）作为反激拓扑优化的PWM控制器，凭借高频高效、强驱动、宽电压适配、欠压保护等特性，成为中小功率开关电源的优选方案。其DIP-8封装的易用性与低耗散热的可靠性，可覆盖适配器、LED驱动、工业控制等多类场景，满足商业级环境下的稳定工作需求。
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