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
