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Slkor MC34063S
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Slkor MC34063S
- Type
- SLKOR
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- SLKOR
- Electronic Component
- MC34063S
- Electronic Component
- 1
- Package
- SOP-8
- Electronic Component
- DC-DC Power Supply IC
- Electronic Component
- 0.1g
- Electronic Component
- 1
- Features
- Electronic Component
- Synchronous
- Electronic Component
- Electronic Component
- BM0230012700
- Operating Temperature
- 0℃~+70℃
- Operating Voltage
- 3V~36V
- Switching Frequency
- 100kHz
- Output Current
- 1.2A
- Output Channel Count
- 1
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MC34063S 产品概述
一、产品简介
MC34063S 是一款通用型 DC-DC 开关稳压器芯片，适用于降压、升压与反相三种拓扑。该器件内置开关管，工作电压范围宽（3V～36V），可实现输出电压 1.24V～40V 的调整，典型开关频率约 100kHz，最大输出电流可达 1.2A（典型）。因不支持同步整流，需外接肖特基或快恢复二极管作为续流元件。封装为 SOP-8，品牌 Slkor（萨科微）提供的型号便于在多种便携与工业电源设计中替换使用。
二、主要特性
- 功能：降压（Buck）、升压（Boost）、反相（Inverting）三合一拓扑支持。
- 工作电压：宽电源输入 3V～36V，适配电池与车载电源等应用。
- 输出范围：可调输出 1.24V～40V，配合外部电阻可灵活设定。
- 开关频率：约 100kHz，平衡体积与效率。
- 输出电流：典型 1.2A，短时峰值更高；内置开关晶体管，简化外围。
- 同步整流：否（需外接二极管），简化芯片但对效率与散热有影响。
- 封装：SOP-8，便于手工焊接与自动贴装。
三、电气参数与引脚功能
MC34063S 集成基准电压、振荡器、比较器、占空比限制与内部开关管。关键参数包括基准电压约 1.25V（用于电压反馈）、振荡频率（可通过外部电容微调）和开关峰值电流限制。典型引脚有输入电源、开关输出、基准/反馈、振荡电容、开关端等，按数据手册连接外部电感、电容与续流二极管即可实现目标拓扑。
四、典型应用与参考电路
- 降压：用于将 12V 降至 5V 或 3.3V 的车载或工业电源；需外接电感、肖特基二极管、输出电容及反馈电阻。
- 升压：将 3.3V 提升到 12V、9V 等小功率驱动场景（传感器、LCD 背光）。
- 反相：提供小电流负电源用于模拟前端或偏置场景。
建议依照参考设计计算电感值与输出电容，以满足纹波与瞬态要求。
五、设计注意事项与布局建议
- 由于为非同步整流架构，应优先选用低正向压降的肖特基二极管以提高效率与降低发热。
- 布局上将电感、续流二极管与输入/输出电容尽量靠近芯片开关引脚，缩短高电流回路，减少 EMI。
- 若工作近峰值电流，注意散热与封装温升，必要时使用散热铜箔或降额设计。
- 振荡定时电容与补偿网络按手册值选择，保证环路稳定与快速响应。
六、封装与选型建议
MC34063S（SOP-8）适合中低功率开关电源替换与设计学习。选型时关注输入电压范围、输出电流需求及效率目标；若对效率与体积有更高要求，可考虑支持同步整流的替代方案。购买时核对 Slkor（萨科微）提供的完整数据手册与典型应用电路，以确保匹配具体应用。
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