5V / 12V / 15V或可调,高效率,低IQ ,升压型DC-DC控制器 5V/12V/15V or Adjustable, High-Efficiency, Low IQ, Step-Up DC-DC Controllers
General Description
The MAX770–MAX773 step-up switching controllers provide 90% efficiency over a 10mA to 1A load. A unique current-limited pulse-frequency-modulation PFM control scheme gives these devices the benefits of pulse-width-modulation PWM converters high efficiency at heavy loads, while using less than 110µA of supply current vs. 2mA to 10mA for PWM converters.
Features
♦ 90% Efficiency for 10mA to 1A Load Currents
♦ Up to 15W Output Power
♦ 110µA Max Supply Current
♦ 5µA Max Shutdown Current
♦ 2V to 16.5V Input Range MAX770/MAX771/MAX772
♦ Internal Shunt Regulator for High Input Voltages MAX773
♦ Preset or Adjustable Output Voltages
MAX770: 5V or Adjustable
MAX771: 12V or Adjustable
MAX772: 15V or Adjustable
MAX773: 5V, 12V, 15V, or Adjustable
♦ Current-Limited PFM Control Scheme
♦ 300kHz Switching Frequency
Applications
Palmtops/Handy-Terminals
High-Efficiency DC-DC Converters
Battery-Powered Applications
Positive LCD-Bias Generators
Portable Communicators
Flash Memory Programmers
型号 | 品牌 | 下载 |
---|---|---|
MAX773ESD | Maxim Integrated 美信 | 下载 |
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