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Maxim产品 - MAX1692介绍

MAX1692 - 低噪声、5.5V输入、PWM降压型稳压器

MAX1692是Maxim美信半导体公司的一款DC-DC开关调节器产品，MAX1692是低噪声、5.5V输入、PWM降压型稳压器，本站介绍了MAX1692的封装应用图解、特点和优点、功能等，并给出了与MAX1692相关的Maxim元器件型号供参考。

MAX1692 - 低噪声、5.5V输入、PWM降压型稳压器 - DC-DC开关调节器 - 微小的开关控制器，提供600mA驱动，性能指标比LDO提高10倍 - 美信半导体

产品概述

The MAX1692 is a low-noise, pulse-width-modulated (PWM), DC-DC step-downconverter. It powers logic and transmitters in small wireless systems such as cellular phones,communicating PDAs, and handy-terminals. The device features an internal synchronous rectifier for highefficiency; it requires no external Schottky diode. Excellent noise characteristics and fixed-frequencyoperation provide easy post-filtering. The MAX1692 is ideally suited for Li-Ion battery applications. It isalso useful for +3V or +5V fixed input applications.

The device operates in one of four modes. Forced PWM mode operates at a fixed frequency regardless ofthe load. Synchronizable PWM mode allows an external switching frequency to control and minimizeharmonics. Idle Mode™ (PWM/PFM) extends battery life by switching to a PFM pulse-skipping mode duringlight loads. Shutdown mode places the device in standby, reducing quiescent supply current to under0.1µA.

The MAX1692 can deliver over 600mA. The output voltage can be adjusted from 1.25V to VIN with theinput range of +2.7V to +5.5V. Other features of the MAX1692 include high efficiency, low dropout voltage,and a 1.2%-accurate 1.25V reference. It is available in a space-saving 10-pin µMAX package with aheight of only 1.11mm.

关键特性
  • 以下关键特性由Maxim美信半导体提供：
  • +2.7V to +5.5V Input Range
  • Adjustable Output from 1.25V to VIN
  • 600mA Guaranteed Output Current
  • 95% Efficiency
  • No Schottky Diode Required
  • 85µA Quiescent Current
  • 100% Duty Cycle in Dropout
  • 750kHz Fixed-Frequency PWM Operation
  • Synchronizable Switching Frequency
  • Accurate Reference: 1.25V (±1.2%)
  • Small 10-Pin µMAX Package
    • 热门应用
  • 电池供电设备(1节Li+或3节NiMH/NiCd)
  • 蜂窝电话
  • 无绳电话
  • CPU I/O电源
  • 笔记本电脑芯片组电源
  • PDA与手持终端
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