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500mA、低压差线性稳压器,UCSP封装

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主要特征

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主要特征

  • Guaranteed 500mA Output Current
  • Low 90mV Dropout at 500mA
  • ±1% Initial Output Accuracy
  • Preset Output at 1.5V, 1.8V, 2V, 2.5V, 3.3V, 5V
  • Adjustable Output from 1.25V to 5V
  • Power-OK Output
  • Low 125µA Ground Current
  • 0.1µA Shutdown Current
  • Thermal Overload Protection
  • Output Current Limit
  • Tiny 840mW 6-Pin UCSP Package

应用/用途

  • 基站
  • 蜂窝与无绳电话
  • 坞站
  • 笔记本电脑
  • 掌上电脑
  • 个人数字助理(PDA)
  • USB集线器

描述

The MAX1819 low-dropout linear regulator operates from a 2.5V to 5.5V supply and delivers a guaranteed 500mA load current with low 120mV dropout. The high-accuracy (±1%) output voltage is preset at an internally trimmed voltage (see the Selector Guide in the full data sheet) or can be adjusted from 1.25V to 5V with an external resistive-divider.

An internal PMOS pass transistor allows the low 125µA supply current to remain independent of load, making this device ideal for portable battery-operated equipment such as personal digital assistants (PDAs), cellular phones, cordless phones, base stations, and notebook computers.

Other features include an active-low, open-drain reset output that indicates when the output is out of regulation, a 0.1µA shutdown, short-circuit protection, and thermal shutdown protection. The device is available in a miniature 6-pin UCSP™ package.

简化框图

MAX1819:典型工作电路 MAX1819:典型工作电路 Zoom icon

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心