Analog Devices / Maxim Integrated MAX16935/MAX16939 降压转换器
Maxim MAX16935/MAX16939 3.5A 降压转换器预装有集成高侧和低侧 MOSFET，设计用于配合外部肖特基二极管工作，以提高效率。 低侧 MOSFET 可在轻载应用下进行固定频率强制 PWM (FPWM) 工作。 该器件采用 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。 该器件输出电压包括 3.3V/5V 固定电压或 1V 至 10V 可调电压。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，使这两款器件非常适合汽车和工业应用。
The Analog Devices MAX16935 and MAX16939 Step-Down Converters are available in 16-pin TQFN-EP and TSSOP-EP packages and are AEC-Q100 qualified for use in automotive applications.
特性
- Integration and High-Switching Frequency Saves Space
- Integrated 3.5A High-Side Switch
- Low-BOM-Count Current-Mode Control Architecture
- Fixed Output Voltage with ±2% Accuracy or Externally Resistor Adjustable (1V to 10V)
- 220kHz to 2.2MHz Switching Frequency with Three Operation Modes (Skip Mode, Forced Fixed-Frequency Operation, and External Frequency Synchronization)
- Automatic LX Slew-Rate Adjustment for Optimum Efficiency Across Operating Frequency Range
- 180° Out-of-Phase Clock Output at SYNCOUT Enables Cascaded Power Supplies for Increased Power Output
- Spread-Spectrum Frequency Modulation Reduces EMI Emissions
- Wide Input Voltage Range Supports Automotive Applications
- 3.5V to 36V Input Voltage Range
- Enable Input Compatible from 3.3V Logic Level to 42V
- Robust Performance Supports Wide Range of Automotive Applications
- -40°C to +125°C Automotive Temperature Range
- Thermal-Shutdown Protection
- AEC-Q100 Qualified
- Power-Good Output Allows Power-Supply Sequencing
- Tight Overvoltage Protection Provides Smaller Overshoot Voltages (MAX16939)
应用
- Distributed DC Power Systems
- Navigation and Radio Head Units
- Point-of-Load Applications
Typical Application Circuit
发布日期: 2016-09-21
| 更新日期: 2023-04-21