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ISL85402
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ISL85402

  • 所属类别：稳压器
  • 产品名称：2.5A稳压器，集成高边MOSFET同步降压或升压降压转换器
  • 厂商：intersil
  • 生产批号：12+
  • 封装：sop
  • 库存状态：有库存
  • 库存量：5000
  • 最低订购量：1
  • 详细资料：点击查找ISL85402的pdf资料
  • 点击询价
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  • Product Introduction

 Key features:

 
超宽输入电压范围：3V至36V
可选的模式操作
强制PWM模式
可选择烤瓷可编程PFM / PWM的边界
300μAIC静态电流（烤瓷，空载）;180μA输入静态电流（无负载，烤瓷V OUT连接到AUXVCC）
小于3μA待机输入电流（IC的残疾人士）
业务拓扑
同步降压
非同步降压
两个阶段的升压降压
从200kHz至2.2MHz的可编程频率和频率同步能力
±1％严格的电压调节精度
可靠的过流保护
温度补偿电流检测
逐周期电流限制，频率折返
打嗝模式的最坏情况下的短路条件
20 LD的4x4 QFN封装
无铅（符合RoHS）
描述
 
ISL85402是一个125mΩ的高边MOSFET和低侧驱动器集成的同步降压控制器。ISL85402支持3V至36V的宽输入电压范围。关于输出电流能力从热的角度，ISL85402通常可以支持连续负载2.5A，5V 输出，五至五条件下，500kHz的范围为8V至30V，+85°C环境温度与静止的空气中。对于任何特定的应用程序，实际的最大输出电流取决于模具温度消散在IC的电源，这是关系到输入电压，输出电压，占空比，开关频率，电路板布局和环境温度不超过+125°C的等参考输出当前第13页的详细信息。ISL85402具有强制PWM模式和PFM模式下的操作模式灵活的选择。在PFM模式下，静态输入电流为180μA（AUXVCC连接到V低）。PFM和PWM之间的负载边界可以编程，涵盖了广泛的应用。低侧驱动器，可以用来驱动外部低边MOSFET用于同步降压，或留下一个标准的非同步降压闲置。低侧驱动器也可以用来驱动作为预调节器，这极大地扩展了作业的输入电压范围3V或更低（参考典型应用电路图III相同的IC控制降压升压转换器-升压降压转换器）。ISL85402提供了最强大的电流保护。它采用逐周期电流限制峰值电流模式控制。它与频率折返电流限制条件下实施;打嗝过流保护模式，除此之外，还实施苛刻的短期条件下保证可靠运行。ISL85402具有对各种故障的全面保护，包括过压和过温保护等

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