Analog Devices / Maxim Integrated MAX16936 220kHz到2.2MHz降压转换器
Maxim Integrated 带集成高边和低边MOSFET的 MAX16936 36V、220kHz到2.2MHz降压转换器采用3.5V至36V电源供电，空载时静态电流仅为28µA。开关频率通过电阻设置在220KHz至2.2MHz，也可以和外部时钟同步。MAX16936输出电压：可输出为5V/3.3V固定或1V至10V可调节输出。输入电压范围比较宽，在瞬态欠压时能够以98%的占空比工作，使MAX16936非常适合汽车和工业应用。如配合外部肖特基二极管将获得更高效率。在轻载应用中，低边MOSFET采用固定频率强制PWM (FPWM)工作模式。保护功能包括：逐周期限流以及带自动恢复的热关断。其它特性包括：电源正常指示以便电源排序，SYNCOUT引脚输出与内部振荡器180°异相时钟，便于和多个MAX16936组成级联电源。
特性
- Wide 3.5V to 36V input voltage range
- 42V Load dump protection
- Enhanced current-mode control architecture
- Fixed output voltage with ±2% accuracy (5V/3.3V) or externally resistor adjustable (1V to 10V)
- 220kHz to 2.2MHz Switching frequency with three operation modes
- 28µA Ultra-low quiescent current skip mode
- Forced fixed-frequency operation
- External frequency synchronization
- Spread-spectrum frequency modulation
- Automatic LX slew rate adjustment for optimum efficiency across operating frequency range
- 180° Out-of-phase clock output at SYNCOUT
- Low-BOM-count current-mode control architecture
- Power-good output
- Enable input compatible from 3.3V logic level to 42V
- Thermal shutdown protection
- -40°C to +125°C Automotive temperature range
- AEC-Q100 Qualified
应用
- Distributed DC power systems
- Navigation and radio head units
- Point of load applications
Typical Application Circuit
发布日期: 2013-03-13
| 更新日期: 2023-04-13