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Maxim产品 - MAX1709介绍

MAX1709 - 4A、低噪声、高频、升压型DC-DC转换器

MAX1709是Maxim美信半导体公司的一款DC-DC开关调节器产品，MAX1709是4A、低噪声、高频、升压型DC-DC转换器，本站介绍了MAX1709的封装应用图解、特点和优点、功能等，并给出了与MAX1709相关的Maxim元器件型号供参考。

MAX1709 - 4A、低噪声、高频、升压型DC-DC转换器 - DC-DC开关调节器 - 3V至5V升压型DC-DC，可提供4A输出，内置开关 - 美信半导体

产品概述

The MAX1709 sets a new standard of space savings for high-power, step-up DC-DC conversion. It delivers up to 20W at a fixed (3.3V or 5V) or adjustable (2.5V to 5.5V) output, using an on-chip power MOSFET from a +0.7V to +5V supply.

Fixed-frequency PWM operation ensures that the switching noise spectrum is constrained to the 600kHz fundamental and its harmonics, allowing easy postfiltering for noise reduction. External clock synchronization capability allows for even tighter noise spectrum control. Quiescent power consumption is less than 1mW to extend operating time in battery-powered systems.

Two control inputs (ONA, active-low ONB) allow simple push-on, push-off control through a single momentary pushbutton switch, as well as conventional on/off logic control. The MAX1709 also features programmable soft-start and current limit for design flexibility and optimum performance with batteries.

The MAX1709 is supplied in both a high-power TSSOP package, which allows a 10ARMS switch current and a 4A output, and a narrow SO package, which supplies a 2.4A output with a switch rated at 6ARMS. Although thenarrow SO device has a lower RMS switch rating, it has the same peak switch current rating as the TSSOP device, and so can supply 4A loads intermittently. If loads of 2A or less are required, refer to the MAX1708.

关键特性
  • 以下关键特性由Maxim美信半导体提供：
  • Integration Reduces External Component Count to Save Space
  • On-Chip 10A Power MOSFET
  • 5V, 4A Output from a 3.3V Input
  • Fixed 3.3V or 5V Output Voltage or Adjustable (2.5V to 5.5V)
  • Input Voltage Range Down to 0.7V
  • ConstantFrequencyReducesPost-Filtering
  • Low-Noise, Constant-Frequency Operation (600kHz)
  • Synchronizable Switching Frequency (350kHz to 1000kHz)
  • Lower Power Consumption Extends Battery Life
  • 1mW Quiescent Power
    • 热门应用
  • 手持通信装置的3.6V或5V RF PA
  • 本地2.5V至3.3V或5V转换器
  • 本地3.3V至5V转换器
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