MAX1857 - 500mA、具有纹波抑制的LDO，µMAX封装

MAX1857是Maxim美信半导体公司的一款线性调节器产品，MAX1857是500mA、具有纹波抑制的LDO，µMAX封装，本站介绍了MAX1857的封装应用图解、特点和优点、功能等，并给出了与MAX1857相关的Maxim元器件型号供参考。

MAX1857 - 500mA、具有纹波抑制的LDO，µMAX封装 - 线性调节器 - 0.5A、低压差、具有纹波滤波的LDO，采用8引脚µMAX封装 - 美信半导体

产品概述

The MAX1857 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 4.75V or can be adjusted from 1.25V to 5.0V with an external resistive divider.

An internal PMOS pass transistor allows the low 135µA 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 with a 4.5ms timeout period that indicates when the output is out of regulation, a 0.1µA shutdown mode, short-circuit protection, and thermal shutdown protection. The device is available in a miniature 8-pin µMAX package. For higher power applications, refer to the MAX1792 and MAX1793 data sheets.

关键特性

以下关键特性由Maxim美信半导体提供：

Guaranteed 500mA Output Current

Low 120mV Dropout at 500mA

Up to ±1% Output Voltage Accuracy

Preset at 4.75V

Adjustable from 1.25V to 5.0V

Reset Output with 4.5ms Timeout Period

Low 135µA Ground Current

0.1µA Shutdown Current

Thermal Overload Protection

Output Current Limit

Tiny µMAX Package

热门应用

蜂窝电话/无绳电话

坞站

笔记本电脑

掌上电脑

PDA

USB集线器

无线基站

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