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MAX764：-5V/-12V/-15V或可调、高效率、低IQ、DC-DC反相器

内置功率MOSFET，减少元件数并节省空间

The MAX764/MAX765/MAX766 inverting switching regulators are highly efficient over a wide range of load currents, delivering up to 1.5W. A unique, current-limited, pulse-frequency-modulated (PFM) control scheme combines the benefits of traditional PFM converters with the benefits of pulse-width-modulated (PWM) converters. Like PWM converters, the MAX764/MAX765/MAX766 are highly efficient at heavy loads. Yet because they are PFM devices, they use less than 120µA of supply current (vs. 2mA to 10mA for a PWM device). The input voltage range is 3V to 16V. The output voltage is preset at -5V (MAX764), -12V (MAX765), or -15V (MAX766); it can also be adjusted from -1V to -16V using two external resistors (Dual Mode™). The maximum operating VIN - VOUT differential is 20V. These devices use miniature external components; their high switching frequencies (up to 300kHz) allow for less than 5mm diameter surface-mount magnetics. A standard 47µH inductor is ideal for most applications, so no magnetics design is necessary. An internal power MOSFET makes the MAX764/MAX765/ MAX766 ideal for minimum component count, low- and medium-power applications. For increased output drive capability or higher output voltages, use the MAX774/MAX775/MAX776 or MAX1774, which drive an external power P-channel MOSFET for loads up to 5W.

关键特性 High Efficiency for a Wide Range of Load Currents 250mA Output Current 120µA Max Supply Current 5µA Max Shutdown Current 3V to 16V Input Voltage Range -5V (MAX764), -12V (MAX765), -15V (MAX766), or Adjustable Output from -1V to -16V Current-Limited PFM Control Scheme 300kHz Switching Frequency Internal, P-Channel Power MOSFET

MAX764、MAX765、MAX766：典型工作电路 应用 电池供电应用 LAN适配器 LCD偏置发生器 便携式仪表 远端数据采集系统

数据手册DataSheet

关键参数

开发工具

• MAX764EVKIT

质量和环境数据

• MAX764.pdf

相关产品

• MAX1774：双路、高效率、降压型转换器，带有备用电池切换开关
• MAX774：-5V/-12V/-15V或可调、高效率、低IQ、反相、DC-DC控制器

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