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MAX1818：500mA、低压差线性稳压器，SOT23封装

The MAX1818 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 voltage (see Selector Guide in the full data sheet) or can be adjusted from 1.25V to 5.0V with an external resistive divider. An internal PMOS pass transistor allows the low 125µA 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 that indicates when the output is out of regulation, a 0.1µA shutdown, short-circuit protection, and thermal shutdown protection. The device is available in a miniature 800mW 6-pin SOT23 package.

关键特性 Guaranteed 500mA Output Current Low 120mV Dropout at 500mA ±1% Output Voltage Accuracy Preset at 1.5V, 1.8V, 2.0V, 2.5V, 3.3V, 5V Adjustable from 1.25V to 5.0V Power OK Output Low 125µA Ground Current 0.1µA Shutdown Current Thermal Overload Protection Output Current Limit Tiny 800mW 6-Pin SOT23 Package

MAX1818：典型工作电路 应用 蜂窝电话/无绳电话 坞站 笔记本电脑 掌上电脑 PDA及其它手持设备 USB集线器 无线基站

数据手册DataSheet

关键参数

开发工具

• MAX1818EVKIT

技术资料

• Using a Linear Regulator to Produce a Constant Current Source

质量和环境数据

• MAX1818.pdf

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