MAX1626 - 5V/3.3V或可调、100%占空比、高效率、降压型DC-DC控制器

MAX1626是Maxim美信半导体公司的一款DC-DC开关调节器产品，MAX1626是5V/3.3V或可调、100%占空比、高效率、降压型DC-DC控制器，本站介绍了MAX1626的封装应用图解、特点和优点、功能等，并给出了与MAX1626相关的Maxim元器件型号供参考。

MAX1626 - 5V/3.3V或可调、100%占空比、高效率、降压型DC-DC控制器 - DC-DC开关调节器 - 高效、低成本、降压控制器，非常适合1.5V CPU I/O供电 - 美信半导体

产品概述

The MAX1626/MAX1627 step-down DC-DC controllers operate over a 2.6V to 16.5V input voltage range. The controllers deliver load current from 1mA to more than 2A. The MAX1626 has pin-selectable 3.3V and 5V outputs. The MAX1627 supports adjustable outputs from 1.3V to 16V.

A unique current-limited, pulse-frequency-modulation (PFM) control scheme operates up to 100% duty cycle, resulting in very low dropout voltage. This control scheme eliminates minimum load requirements and reduces supply current under light loads to 90µA (versus 2mA to 10mA for common pulse-width modulation controllers).

The devices are available in a 8-pin SOIC package (-40°C to +85°C) and dice (0°C to +70°C).

关键特性

以下关键特性由Maxim美信半导体提供：

Reduce External Components and Total Cost

300KHz PWM Switching Reduces Component Size

Tiny Surface-Mount Inductor

Reduce Power Dissipation

> 90% Efficiency from 3mA to 2A Loads

Low Dropout Voltage

100% Maximum Duty Cycle

Reduce Number of DC-DC Controllers to Stock

Wide 2.6V to 16.5V Input Voltage Options

Selectable 3.3V and 5V or Adjustable 1.3V to 16VOutput Voltage Options

Reduce System Power Consumption

90µA Max Quiescent Current

1µA Max Shutdown Current

Operates Reliably in Adverse Environment

Soft-Start Limits Startup Current

Current-Limited Control Scheme

Increase Design Flexibility

External P-Channel MOSFET Allows Output Powerof > 12.5W

热门应用

5V至3.3V绿色PC应用

电池供电应用

手持式计算机

高效降压转换器

低成本笔记本电脑电源

元件数最少的DC-DC转换器

PCMCIA电源

PDA及其它手持设备

便携式终端

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