MAX884 - 5V/3.3V或可调、低压差、低IQ、200mA线性稳压器，具有待机模式

MAX884是Maxim美信半导体公司的一款线性调节器产品，MAX884是5V/3.3V或可调、低压差、低IQ、200mA线性稳压器，具有待机模式，本站介绍了MAX884的封装应用图解、特点和优点、功能等，并给出了与MAX884相关的Maxim元器件型号供参考。

MAX884 - 5V/3.3V或可调、低压差、低IQ、200mA线性稳压器，具有待机模式 - 线性调节器 - 250mA LDO，任何负载和压差下耗电仅为11µA - 美信半导体

产品概述

The MAX882/MAX883/MAX884 linear regulators maximize battery life by combining ultra-low supply currents and low dropout voltages. They feature 200mA output current capability at up to +125°C junction temperature and come in a 1.5W SOIC package. The 1.5W package (compared to 0.47W for standard SOIC packages) allows a wider operating range for the input voltage and output current. The MAX882/MAX883/MAX884 use a p-channel MOSFET pass transistor to maintain a low 11µA (15µA max) supply current from no-load to the full 200mA output. Unlike earlier bipolar regulators, there are no PNP base current losses that increase with output current. In dropout, the MOSFET does not suffer from excessive base currents that occur when PNP transistors go into saturation. Typical dropout voltages are 220mV at 5V and 200mA, or 320mV at 3.3V and 200mA.

The MAX882 features a 7µA standby mode that disables the output but keeps the reference, low-battery comparator, and biasing circuitry alive. The MAX883/MAX884 feature a shutdown (OFF) mode that turns off all circuitry, reducing supply current to less than 1µA. All three devices include a low-battery-detection comparator, fold-back current limiting, reverse-current protection, and thermal-overload protection.

The output is preset at 3.3V for the MAX882/MAX884 and 5V for the MAX883. In addition, all devices employ Dual Mode™ operation, allowing user-adjustable outputs from 1.25V to 11V using external resistors. The input voltage supply range is 2.7V to 11.5V.

For low-dropout linear regulators with output currents up to 500mA, refer to the MAX603/MAX604 data sheet.

关键特性

以下关键特性由Maxim美信半导体提供：

Foldback Current Limiting

High-Power (1.5W) 8-Pin SO Package

Dual Mode Operation: Fixed or Adjustable Output from 1.25V to 11V

Large Input Range (2.7V to 11.5V)

Internal 1.1Ω p-Channel Pass Transistor Draws No Base Current

Low 220mV Dropout Voltage at 200mA Output Current

11µA (typ) Quiescent Current

1µA (max) Shutdown Mode or 7µA (typ) Standby Mode

Low-Battery Detection Comparator

Reverse-Current Protection

Thermal-Overload Protection

热门应用

1.25V至11V可调节的稳压器

3.3V及5V稳压器

汽车电子

高效线性稳压器

寻呼机及蜂窝电话

便携式仪表

太阳能供电仪表

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