LT1581

LT1581非常低压差稳压器

特点

• Low Dropout, 430mV at 10A Output Current 低压差430mV在10A输出电流
• Fast Transient Response 快速瞬态响应
• Remote Sense 遥感
• 1mV Load Regulation 1mV的负荷调节
• Fixed 2.5V Output and Adjustable Output 2.5V固定输出和可调输出
• No Supply Sequencing Problems in无电源排序的问题
  Dual Supply Mode双电源模式
• 描述 The LT®1581 is a 10A low dropout regulator designed to power the new generation of microprocessors. LT®1581是10A的低压差稳压器设计的新一代微处理器供电。 The dropout voltage of this device is 100mV at light loads rising to just 430mV at 10A.此设备在轻负载10A上升只是430mV 100mV的压降。 To achieve this dropout a second low current input voltage 1V greater than the output voltage is required.要实现这个差第二个低电流输入电压高于输出电压的1V是必需的。 The device can also be used as a single supply device where dropout is comparable to an LT1584.该装置还可以被用来作为一个单独的电源装置，相当于一个LT1584辍学。 Several other new features have been added to the LT1581.其他一些新的功能已被添加到LT1581。 A remote SENSE pin is brought out.带出了一个偏远的SENSE引脚。 This feature virtually eliminates output voltage variations due to load changes.此功能几乎消除了由于负载变化，输出电压变化。 Typical load regulation for a load current step of 100mA to 10A, measured at the SENSE pin, is less than 1mV. 100mA至10A负载电流的步骤，在SENSE引脚测量，典型负载调节小于1mV的少。 The LT1581 has fast transient response, equal to the LT1584. LT1581具有快速瞬态响应，平等的LT1584。 On fixed voltage devices, the ADJUST pin is brought out.在固定电压设备，调整脚带出。 A small capacitor on the ADJUST pin further improves transient response.调节引脚上的一个小电容，进一步改善瞬态响应。 This device is ideal for generating processor supplies of 2V to 3V on motherboards where both 5V and 3.3V supplies are available.这个装置是理想的产生2V处理器供应为3V，5V和3.3V电源提供的主板上的。
• 应用
  • Microprocessor Supplies微处理器供应
  • Post Regulators for Switching Supplies发布开关电源的稳压器
  • High Current Regulators高电流稳压器
  • 5V to 3.XXV for Pentium® Processors Operating 5V至3.XXV奔腾®处理器工作
    at 90MHz to 166MHz and Beyond在90MHz到166MHz的跨越
  • 3.3V to 2.9V for Portable Pentium Processor 3.3V至2.9V便携式奔腾处理器
  • Power PC™ Series Power Supplies电源PC™系列电源