LT3150

• 产品介绍

LT3150快速瞬态响应，低输入电压，非常低压差线性稳压控制器

特点

• Fast Transient Response Optimized with Ceramic Output Capacitors 与陶瓷输出电容器优化的快速瞬态响应
• FET R _DS(ON) Defines Dropout Voltage 场效应管的R _{DS（ON）的}定义电压差
• ±1% Reference Tolerance Over Temperature 参考过温度公差±1％
• Multifunction LDO Shutdown Pin with Latchoff多功能LDO关断引脚与闭锁
• Fixed Frequency 1.4MHz Boost Converter Generates MOSFET Gate Drive固定频率1.4MHz的升压转换器产生MOSFET栅极驱动
• Internally Compensated Current Mode PWM内部补偿电流模式PWM
• Boost Converter Uses Tiny Capacitors and Inductor升压转换器采用微型电容器和电感器
• Independent Boost Converter Shutdown Control Permits LDO Output Voltage Supply Sequencing独立的升压转换器关断控制，允许LDO输出电压电源排序
• 16-Lead SSOP Package 16引线SSOP封装
• 描述

  The LT®3150 drives a low cost external N-channel MOSFET as a source follower to produce a fast transient response, very low dropout voltage linear regulator. LT®3150驱动器的低成本外部N沟道MOSFET的源跟随器产生一个快速的瞬态响应，非常低压差线性稳压器。 Selection of the N-channel MOSFET R _DS(ON) allows dropout voltages below 300mV for low V _IN to low V _OUT applications.选择的N沟道MOSFET的R _{DS（ON），}可以应用到低V低V _OUT电压低于300mV的压差。

  The LT3150 includes a fixed frequency boost regulator that generates gate drive for the N-channel MOSFET. LT3150包含一个固定频率的升压稳压器，生成N沟道MOSFET栅极驱动。 The internally compensated current mode PWM architecture combined with the 1.4MHz switching frequency permits the use of tiny, low cost capacitors and inductors. 1.4MHz的开关频率相结合，内部补偿的电流模式PWM架构允许使用纤巧，低成本电容器和电感器。

  The LT3150's transient load performance is optimized with ceramic output capacitors. LT3150的瞬态负载性能进行了优化与陶瓷输出电容器。 A precision 1.21V reference accommodates low voltage supplies.一个精确的1.21V参考适应低电压电源。

  Protection includes a high side current limit amplifier that activates a fault timer circuit.保护包括高侧电流限制放大器，激活故障定时器电路。 A multifunction shutdown pin provides either current limit time-out with latchoff, overvoltage protection or thermal shutdown.闭锁，过压保护或热关断任何一个多功能的停机引脚提供电流限制超时。 Independent shutdown control of the boost converter provides on/off and sequencing control of the LDO output voltage.独立的关断控制的升压转换器提供/关闭和测序LDO的输出电压控制。

• 应用

  • Microprocessor, ASIC and I/O Supplies微处理器，ASIC和I / O用品
  • Very Low Dropout Input-to-Output Conversion非常低的压差输入输出转换
  • Logic Termination Supplies逻辑端接电源