Microchip Technology MCP1665 PFM/PWM升压转换器
Microchip MCP1665 PFM/PWM升压转换器设计用于为电池供电型应用提供节省空间的高电压升压电源解决方案。MCP1665转换器具有36V、100mΩ集成开关、受控启动电压、内部补偿、可调输出电压以及脉冲频率调制/脉冲宽度调制 (PFM/PWM）模式。该转换器具有欠压闭锁 (UVLO) 功能，可避免电池供电型应用在具有低输入或放电电池的情况下启动和运行。典型的3.6A逐周期电感器峰值电流限制操作可保护集成开关。当反馈电阻意外断开时，输出过压保护和开路负载保护将会通过使反馈引脚短路来关闭开关。借助MCP1665转换器，可以在较小的PCB面积内创建典型升压、单端初级电感转换器 (SEPIC) 或反激式直流-直流转换器。MCP1665转换器适合用于便携式应用的LCD偏置电源、相机手机闪光灯、单节锂离子电池至5V、12V或24V转换器、手电筒以及照明应用。
The Microchip Technology MCP1665 PFM/PWM Step-up Converter is housed in a compact 2mm x 2mm VQFN-10 package, ideal for space-constrained applications.
特性
- 36V, 100mΩ integrated switch
- Up to 92% efficiency
- Up to 32V output voltage range
- 2.9V to 5V input voltage range
- 1.2VFB feedback voltage reference
- Inrush current limiting and internal soft-start
- Cycle-by-cycle current limiting
- Internal compensation
- Output Overvoltage Protection (OVP) and Open-Load Protection (OLP) for constant current configuration
- Thermal shutdown
- Easily configurable for Single-Ended Primary-Inductor Converter (SEPIC) or flyback topologies
应用
- Three-cell alkaline, lithium, and NiMH/NiCd portable products
- Single-cell Li-ion to 5V, 12V, or 24V converters
- LCD bias supply for portable applications
- Camera phone flash
- Flashlight
- Battery-powered LEDs
- Lighting applications
- Portable medical equipment
- Hand-held instruments
Development Tools
Microchip Technology MCP1665升压转换器评估板
提供了用于评估MCP1665升压转换器特性的平台。
Block Diagram
发布日期: 2017-12-15
| 更新日期: 2022-04-11