MAX1775 - 双输出、降压型DC-DC转换器，用于PDA/掌上电脑

MAX1775是Maxim美信半导体公司的一款DC-DC开关调节器产品，MAX1775是双输出、降压型DC-DC转换器，用于PDA/掌上电脑，本站介绍了MAX1775的封装应用图解、特点和优点、功能等，并给出了与MAX1775相关的Maxim元器件型号供参考。

MAX1775 - 双输出、降压型DC-DC转换器，用于PDA/掌上电脑 - DC-DC开关调节器 - 双输出降压转换器，用于PDA和掌上电脑 - 美信半导体

产品概述

The MAX1775 dual, step-down DC-DC converter generates both the main (+3.3V at over 2A) and core (+1.8V at up to 1.5A) supplies for a complete power solution for PDAs, subnotebooks, and other hand-held devices. The main output is adjustable from +1.25V to +5.5V. The core output is adjustable from 1V to 5V. Both switching converters operate at up to 1.25MHz for small external components and use synchronous rectifiers to achieve efficiencies up to 95%. Operation with up to 100% duty cycle provides the lowest possible dropout voltage to extend useful battery life.

The MAX1775 accepts inputs from +2.7V up to +28V, allowing use with many popular battery configurations as well as AC-DC wall adapters. Digital soft-start reduces battery current surges at power-up. Both the main and core converters have separate shutdown inputs. The MAX1775 comes in a small 16-pin QSOP package.

The MAX1775 evaluation kit is available to help reduce design time.

关键特性

以下关键特性由Maxim美信半导体提供：

Dual, High-Efficiency, Synchronous Rectified Step-Down Converter

Main Power

Adjustable from +1.25V to +5.5V

Over 2A Load Current

Up to 95% Efficiency

Core Power

Adjustable from 1V to 5V

Internal Switches

Up to 1.5A Load Current

Up to 92% Efficiency

100% (max) Duty Cycle

Up to 1.25MHz Switching Frequency

Input Voltage Range from +2.7V to +28V

170µA Quiescent Current

5µA Shutdown Current

Digital Soft-Start

Independent Shutdown Inputs

热门应用

手持式计算机

网络浏览器

PDA

POS终端

亚笔记本电脑

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