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UMW MC34063ADR
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- UMW MC34063ADR
- Type
- UMW
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- UMW
- Electronic Component
- MC34063ADR
- Electronic Component
- 1
- Package
- SOP-8
- Electronic Component
- DC-DC Power Supply IC
- Electronic Component
- 0g
- Electronic Component
- 1
- Synchronous
- Electronic Component
- Electronic Component
- BM0227698814
- Operating Temperature
- 0℃~+70℃@(TA)
- Operating Voltage
- 3V~32V
- Switching Frequency
- 24kHz~42kHz
- Electronic Component
- Electronic Component
- Output Current
- 1.2A
- 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.
MC34063ADR 产品概述
一、产品简介
MC34063ADR（UMW 友台半导体）是一款通用型可调 DC-DC 开关稳压器，支持降压、升压及反相三种拓扑，输入电压范围宽（3V ~ 32V），输出电压可调（1.25V ~ 32V）。器件内置功率开关管，非同步整流，单通道输出，适合中低功率电源转换应用。典型输出电流为 1.2A（受散热与磁芯饱和限制），静态电流约 4mA，工作温度范围 0℃ ~ +70℃（TA），封装为 SOP-8。
二、主要特性
- 输入电压：3V ~ 32V，适用多种电源场景（单节锂电、12V/24V 总线等）。
- 输出范围：1.25V ~ 32V 可调，基准电压 1.25V，采用外部分压器设定输出电压。
- 输出电流：典型 1.2A（脉冲峰值能力更高），实际可用电流受电感、散热及元件选择影响。
- 开关频率：可通过定时电容设置，范围约 24kHz ~ 42kHz，频率与效率、外部元件体积相关。
- 同步整流：否，建议使用低压降肖特基二极管以提高效率。
- 内置保护：具备开关限流与热关断功能，提升系统可靠性。
- 封装：SOP-8，适合中等密度 PCB 装配。
三、典型应用
- 可充电电池供电系统的升降压稳压模块。
- 仪表、通信终端及工业控制中的中低功率稳压。
- LED 驱动、小型电源适配器及后端点稳压。
- 需要廉价、易设计的开关电源场合。
四、设计与选型要点
- 拓扑选择：根据输入/输出电压关系选择降压、升压或反相配置；MC34063 常见应用电路资料丰富，便于快速验证。
- 外部元件：需外接功率电感、肖特基整流二极管、输出滤波电容、定时电容和分压电阻。电感应有足够的电流承受能力并避免在工作电流下饱和。
- 频率与元件体积：较低开关频率（24kHz 附近）利于降低开关损耗但电感/电容体积较大；提高频率可缩小外部元件但开关损耗与 EMI 增加。
- 效率考虑：由于为非同步整流设计，建议选用低正向压降的肖特基二极管并优化开关节点布局以降低损耗。
- 热管理与布局：保持开关回路短且粗，接地回流明确，SOP-8 封装需注意散热路径并在 PCB 上增加铜铸面积或过孔以辅助散热。
- 输出电压设置：利用基准 1.25V 与外部分压器设定 Vout（Vout = 1.25V × (1 + R1/R2)），并注意反馈回路的稳定性与补偿。
五、封装与环境
MC34063ADR 提供 SOP-8 封装，便于表面贴装生产。器件工业级工作温度 0℃ ~ +70℃（TA），在高温或散热受限场合应评估降额使用或采取散热措施。
总结：MC34063ADR 以结构简单、外部元件易购为优势，适合对成本和开发周期敏感的中低功率电源项目。在实际应用中，合理选择电感、整流二极管与 PCB 布局是获得良好性能的关键。
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