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Maxim产品 - MAX764介绍

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

MAX764是Maxim美信半导体公司的一款DC-DC开关调节器产品，MAX764是-5V/-12V/-15V或可调、高效率、低IQ、DC-DC反相器，本站介绍了MAX764的封装应用图解、特点和优点、功能等，并给出了与MAX764相关的Maxim元器件型号供参考。

MAX764 - -5V/-12V/-15V或可调、高效率、低IQ、DC-DC反相器 - DC-DC开关调节器 - 内置功率MOSFET，减少元件数并节省空间 - 美信半导体

产品概述

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
  • 以下关键特性由Maxim美信半导体提供：
  • 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
    • 热门应用
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