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LM4140ACMX-4.1
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LM4140ACMX-4.1

  • 所属类别：低压降线性稳压器
  • 产品名称：36V，3A同步降压稳压器频率
  • 厂商：NSC
  • 生产批号：10+
  • 封装：TSSOP
  • 库存状态：有库存
  • 库存量：9850
  • 最低订购量：1
  • 详细资料：点击查找LM4140ACMX-4.1的pdf资料
  • 点击询价
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  • Product Introduction

特点

  • 4.5V至36V输入电压范围
  • 3A输出电流，5.2A峰值电流
  • 130mΩ/110MΩ集成功率MOSFET
  • 94％的峰值效率同步整流
  • 1.5％反馈电压精度
  • 电流模式控制，可选补偿
  • 从250kHz至1.5MHz振荡器同步
  • 可调输出电压低至0.8V
  • 与预偏置负载兼容
  • 可编程软启动与外部电容
  • 精密使能引脚带迟滞
  • OVP，UVLO输入和PGOOD输出
  • 内部保护与峰值电流限制，热停机和重新启动
  • 精确的电流限制最大限度地降低电感器的尺寸
  • 非线性电流模式斜坡补偿
  • eTSSOP - 20裸露焊盘的封装

说明

LM20333是一个全功能的同步降压稳压器能够提供高达3A的负载电流。 外部电流模式控制环路补偿，只有两部分组成，同时提供高性能和易用性。 该装置是优化工作的4.5V至36V输入电压范围，使其适合高电压系统。

该器件具有内部过电压保护（OVP）和过电流保护（OCP）电路，提高了系统的可靠性。 一个高精度使能引脚和集成欠压锁定允许对设备之交，严格控制和测序。 既是一个固定的内部和外部可调的软启动电路限制启动时的浪涌电流。 可能与集成的电源良好（PGOOD）电路故障检测和电源排序。

LM20333是在多轨电源架构设计工作。 器件的输出电压可配置为跟踪一个较高的电压轨，使用SS / TRK针。 如果LM20333的输出预偏置启动时，它不会吸收电流拉输出低，直到内部软启动斜坡超过电压反馈引 脚。

LM20333的开关频率可以同步至一个外部时钟使用SYNC引脚。 SYNC引脚同步输入信号范围从250 kHz至1.5 MHz。

LM20333是裸露焊盘的20引脚eTSSOP封装，可以焊接到PCB提供，省去了笨重的散热器需要。


应用

  • 设计简单，负载调节，高效率的角度，从一个4.5V至36V总线
  • 高性能DSP的FPGA，ASIC和微处理器
  • 通讯基础设施，汽车

The ICs associated with LM4140ACMX-4.1 include:


Model Manufacturers lot number encapsulation illustrate
LM4140ACMX-2.5 NSC 09+ SOP Voltage reference for low dropout voltage with precision micropower
LM4140ACMX-4.1 NSC 10+ TSSOP 36V, 3A synchronous step-down regulator frequency

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NSC brand product recommendation


Model Manufacturers lot number encapsulation illustrate
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