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±1ï¼
• 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 Package16引线SSOP封è£
• 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_INto low V_OUTapplications.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