LT1573

LT1573低压差稳压器驱动程序

特点

• Low Cost Solution for High Current, Low Dropout Regulators 大电流，低压降稳压器的低成本解决方案
• Fast Transient Response Needs Much Less Bulk Capacitance快速瞬态响应需要少得多的大容量电容
• Latching Overload Protection Minimizes Heat Sink Size锁定过载保护，最大限度地减少散热片尺寸
• Precision Output Voltage (1%)精密的输出电压（1％）
• Single Supply Operation: V _IN = 2.8V to 10V单电源供电_：VIN = 2.8V到10V
• Small Surface Mount Package小型表面贴装封装
• Capable of Very Low Dropout Voltage (<0.2V)能力非常低的压差电压（<0.2V）
• Fixed or Adjustable Outputs固定或可调输出
• Shutdown关闭
• 描述 The LT®1573 is a regulator driver IC designed to provide a low cost solution for applications requiring high current, low dropout and fast transient response. LT®1573是一种稳压器驱动IC设计需要大电流，低压差和快速瞬态响应的应用程​​序提供一个低成本的解决方案。 When combined with an external PNP power transistor, this device provides load current up to 5A with dropout voltages as low as 0.35V.当与外部PNP功率晶体管相结合，该设备提供负载电流高达5A的压降电压高达0.35V低。 The LT1573 circuitry is designed for extremely fast transient response. LT1573电路的设计速度极快的瞬态响应。 This greatly reduces bulk storage capacitance when the regulator is used in applications with fast, high current load transients.这大大减少了大量的存储容量时，稳压器​​，具有快速，高电流负载瞬变的应用中使用。 To keep cost and complexity low, the LT1573 uses a new time-delayed latching overcurrent protection technique that requires no external current sense resistor.为了保持低的成本和复杂性，LT1573使用一个新的时间延迟闭锁过电流保护技术，不需要外部的电流检测电阻。 Base drive is limited for instantaneous protection, and a time-delayed latch protects the regulator from continuous short circuits.相应的驱动器瞬时保护是有限的，时间延迟闩锁连续短路保护稳压器。 The LT1573 is available as an adjustable regulator with an output range of 1.27V to 6.8V and with fixed output voltages of 2.5V, 2.8V and 3.3V. LT1573是可作为一个具有1.27V的输出范围可调稳压6.8V，2.5V，2.8V和3.3V固定输出电压。 Output accuracy is better than 1% to meet the critical regulation requirement of fast microprocessors.输出精度优于1％，以满足快速微处理器的关键调控要求。 A special 8-pin, fused-lead surface mount package is used to minimize regulator footprint and provide adequate heat sinking.使用一种特殊的8针，熔铅表面贴装封装，以尽量减少调节的足迹，并提供足够的散热。
   
• 应用
  • 3.3V to 2.5V Regulator 3.3V至2.5V稳压器
  • Microprocessor Power Source微处理器电源
  • Post Regulator for Switching Supplies我的开关电源的稳压器
  • High Efficiency Linear Regulators高效率线性稳压器
  • Ultralow Dropout Regulators超低压差稳压器
  • Low Voltage Linear Regulators低电压线性稳压器