Maxim MAX1857EUA47

正5.5V500mA

Overview

The MAX1857EUA47 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.

Features

Tube Package
120mV dropout voltage

Surface Mount Mounting Type

Applications

There are a lot of Maxim Integrated
MAX1857EUA47+ Linear Voltage Regulators applications.

• Battery-powered device
• Communication device
• Personal communication device
• Portable telephone
• Electronic notebook
• Camera
• Video equipment
• CPU power supply
• Switching regulator
• Multiple-power supply system