回到顶部

数码相机升压型电源

用于数码相机的完备电源方案,1节Li+电池或2至3节AA电池供电时可提供5路输出

产品详情

主要特征

简化框图

Technical Docs

数据资料 数码相机升压型电源 Jan 03, 2001

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

采样:
选择上方“样片”按钮将重定向至第三方ADI样片网站。登录后,所选部件将转移到您在此网站上的购物车。如果您之前从未使用过此网站,请创建一个新帐户。有关此样片网站的任何问题,请联系SampleSupport@analog.com

主要特征

  • +0.7V to +5.5V Input Voltage Range
  • Main DC-DC Converter
    • 95% Efficiency
    • +2.7V to +5.5V Adjustable Output Voltage
    • 1.5A Load Current
  • Uncommitted Gain Block for Linear Regulator
  • Three Independent Auxiliary Step-Up Controllers
    • Adjustable Maximum Duty Cycle
  • Oscillator and Reference Outputs to Drive External Slave Controllers (MAX1801)
  • Power-Ready Output
  • Up to 1MHz Switching Frequency
  • 1µA Supply Current in Shutdown Mode
  • Internal Soft-Start Control
  • Overload Protection for all DC-DC Converters
  • Compact 32-Pin TQFP Package (5mm x 5mm body)

应用/用途

  • 数码相机
  • 数字摄像机
  • DVD播放器
  • 手持式设备
  • 网络浏览器
  • PDA

描述

The MAX1800 provides a complete power-supply solution for digital still cameras and video cameras. The device integrates a high-efficiency main step-up DC-DC converter, three auxiliary step-up controllers, and an uncommitted gain block that drives an external P-channel MOSFET for a linear regulator. The MAX1800 is targeted for applications that use either two or three primary cells or a single lithium-ion (Li+) battery.

The main DC-DC converter accepts inputs from +0.7V to +5.5V and regulates a resistor-adjustable output from 2.7V to 5.5V. It uses an internal synchronous rectifier to regulate the output with 95% efficiency. An adjustable operating frequency facilitates designs for optimum size, cost, and efficiency.

The auxiliary step-up controllers can be used to power a digital camera's CCD, LCD, and backlight. The MAX1800 also features expandability by supplying power, oscillator signal, and reference to the MAX1801, a low-cost slave DC-DC controller that supports step-up, SEPIC, and fly-back configurations.

The MAX1800 is available in a space-saving 32-pin TQFP package (5mm x 5mm body), and the MAX1801 is available in an 8-pin SOT package. An evaluation kit (MAX1800EVKIT) featuring both devices is available to expedite designs.

简化框图

MAX1800:典型工作电路 MAX1800:典型工作电路 Zoom icon

Technical Docs

数据资料 数码相机升压型电源 Jan 03, 2001

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

采样:
选择上方“样片”按钮将重定向至第三方ADI样片网站。登录后,所选部件将转移到您在此网站上的购物车。如果您之前从未使用过此网站,请创建一个新帐户。有关此样片网站的任何问题,请联系SampleSupport@analog.com