LTC3411AEDD-PBF

LTC3411AEDD-PBF

  • 厂商:

    LINER

  • 封装:

  • 描述:

    LTC3411AEDD-PBF - 1.25A, 4MHz, Synchronous Step-Down DC/DC Converter - Linear Technology

  • 详情介绍
  • 数据手册
  • 价格&库存
LTC3411AEDD-PBF 数据手册
LTC3411A 1.25A, 4MHz, Synchronous Step-Down DC/DC Converter FEATURES ■ ■ ■ ■ ■ DESCRIPTION The LTC®3411A is a constant frequency, synchronous step-down DC/DC converter. Intended for medium power applications, it operates from a 2.5V to 5.5V input voltage range and has a user configurable operating frequency up to 4MHz, allowing the use of tiny, low cost capacitors and inductors 1mm or less in height. The output voltage is adjustable from 0.8V to 5.5V. Internal synchronous power switches provide high efficiency. The LTC3411A’s current mode architecture and external compensation allow the transient response to be optimized over a wide range of loads and output capacitors. The LTC3411A can be configured for automatic power saving Burst Mode operation (IQ = 40μA) to reduce gate charge losses when the load current drops below the level required for continuous operation. For reduced noise and RF interference, the SYNC/MODE pin can be configured to skip pulses or provide forced continuous operation. To further maximize battery life, the P-channel MOSFET is turned on continuously in dropout (100% duty cycle). In shutdown, the device draws
LTC3411AEDD-PBF
1. 物料型号: - LTC3411A

2. 器件简介: - LTC3411A是一款由Linear Technology生产的同步降压DC/DC转换器,适用于中等功率应用。它支持从2.5V到5.5V的输入电压范围,并可提供高达1.25A的输出电流。该器件具有高达4MHz的可配置工作频率,允许使用更小、成本更低的电容器和电感器。

3. 引脚分配: - SHDN/RT (Pin 1):组合关闭和定时电阻引脚。 - SYNC/MODE (Pin 2):模式选择和振荡器同步引脚。 - SGND (Pin 3):信号地引脚。 - SW (Pin 4):开关节点连接至电感器。 - PGND (Pin 5):主电源地引脚。 - PVIN (Pin 6):主电源引脚。 - SVIN (Pin 7):信号电源引脚。 - PGOOD (Pin 8):电源好引脚。 - VFB (Pin 9):接收来自外部电阻分压器的反馈电压。 - ITH (Pin 10):错误放大器补偿点。 - Exposed Pad (Pin 11):暴露的垫,必须焊接到PCB上的电气地。

4. 参数特性: - 输入电压范围:2.5V至5.5V - 输出电压可调范围:0.8V至5.5V - 工作频率:高达4MHz - 效率:高达96% - 低关闭电流:<1μA - 支持预偏置输出

5. 功能详解: - LTC3411A采用恒定频率、电流模式架构。它具有突发模式操作、脉冲跳跃模式和强制连续模式等可配置的低电流操作模式。此外,该器件还具有软启动功能,以防止启动时的浪涌电流。

6. 应用信息: - 适用于笔记本电脑、数码相机、手机和手持设备等应用场景。 - 可以作为板上安装的电源供应。

7. 封装信息: - LTC3411A提供10引脚的3mm×3mm DFN封装和10引脚的MSOP封装,两种封装的工作温度范围均为-40°C至125°C。
LTC3411AEDD-PBF 价格&库存

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