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Maxim产品 - MAX6349介绍

MAX6349 - 150mA、SOT23封装、低压差线性稳压器，内置微处理器复位电路

MAX6349是Maxim美信半导体公司的一款线性调节器产品，MAX6349是150mA、SOT23封装、低压差线性稳压器，内置微处理器复位电路，本站介绍了MAX6349的封装应用图解、特点和优点、功能等，并给出了与MAX6349相关的Maxim元器件型号供参考。

MAX6349 - 150mA、SOT23封装、低压差线性稳压器，内置微处理器复位电路 - 线性调节器 - 完备的LDO和µP监控复位电路，采用SOT23封装 - 美信半导体

产品概述

The MAX6329/MAX6349 are low-dropout, micropower linear voltage regulators with integrated microprocessor reset circuits. Each is available with preset +3.3V, +2.5V, +1.8V, or adjustable output voltages and can deliver up to 150mA load current. Employing internal P-channel MOSFET pass transistors, the devices consume only 25µA supply current, independent of the device load. The low supply current, low dropout voltage, and integrated reset functionality make these devices ideal for battery powered portable equipment.

The MAX6329/MAX6349 include an internal reset circuit that indicates when the regulator output drops below standard microprocessor supply tolerances (-5% or -10%). The reset output remains asserted for 100ms (min) after the regulator output exceeds the selected reset threshold, ensuring that supply voltages and clock oscillators have stabilized before processor activity is enabled. Reset outputs are available in push-pull (active-low or -high) and open-drain (active-low) options. The internal reset circuit replaces external microprocessor supervisors or RC-based reset time delays.

The MAX6329/MAX6349 are optimized for use with a 1µF (min) output capacitor. The regulator output voltage is adjustable with an external resistor-divider network at SET (reset threshold voltages track the desired output voltage). Each device includes thermal shutdown protection, output short-circuit protection, and reverse leakage protection. The MAX6329 includes a shutdown feature to reduce regulator current below 1µA (max) and the MAX6349 offers a manual reset input to assert a microprocessor reset while the regulator output is within specification.

关键特性
  • 以下关键特性由Maxim美信半导体提供：
  • Preset +3.3V/+2.5V/+1.8V or Adjustable Regulator Output
  • ±3.0% Regulator Accuracy Over the Specifed Operating Range
  • 25µA Supply Current
  • Low 180mV Dropout at 100mA Load
  • Small Output Capacitor (1µF min ceramic or tantalum)
  • Zero Reverse Leakage Current
  • Thermal and Short-Circuit Protection
  • Integrated Microprocessor Reset Circuit with 100ms (min) Timeout
  • Open-Drain and Push-Pull Reset Outputs
  • Regulator Shutdown Input (MAX6329) or Manual Reset Input (MAX6349)
  • 6-Pin SOT23 Package
    • 热门应用
  • 音频系统
  • 无绳电话
  • 电子规划器
  • 全球定位系统(GPS)
  • 手持式仪表(PDA、掌上电脑)
  • 调制解调器
  • 掌上电脑
  • PCMCIA卡
  • USB设备
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