LTC3565IMSE-PBF

LTC3565IMSE-PBF

  • 厂商:

    LINER

  • 封装:

  • 描述:

    LTC3565IMSE-PBF - 1.25A, 4MHz, Synchronous Step-Down DC/DC Converter - Linear Technology

  • 详情介绍
  • 数据手册
  • 价格&库存
LTC3565IMSE-PBF 数据手册
LTC3565 1.25A, 4MHz, Synchronous Step-Down DC/DC Converter FEATURES ■ ■ ■ ■ DESCRIPTION The LTC®3565 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 0.6V to 5.5V. Internal synchronous power switches provide high efficiency. The LTC3565’s current mode architecture and external compensation allow the transient response to be optimized over a wide range of loads and output capacitors. The LTC3565 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
LTC3565IMSE-PBF
1. 物料型号: - 型号:LTC3565

2. 器件简介: - LTC3565是一款恒定频率、同步降序DC/DC转换器,适用于中等功率应用。其输入电压范围为2.5V至5.5V,用户可配置的工作频率高达4MHz,允许使用高度1mm或更低的微型、低成本电容器和电感器。输出电压可从0.6V调节至5.5V。内部同步电源开关提供高效率。LTC3565的电流模式架构和外部补偿允许在广泛的负载和输出电容器上优化瞬态响应。

3. 引脚分配: - RUN (Pin 2):转换器使能引脚。此引脚高于1.5V时启用该部分,低于0.3V时关闭设备。 - PGOOD (Pin 8):电源好引脚。此共阴逻辑输出在输出电压不在规定范围内时被拉至地。 - SYNC/MODE (Pin 3):模式选择和振荡器同步引脚。此引脚控制设备的运行。 - 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。此控制电压的范围为0.4V至1.4V。 - SW (Pin 4):开关节点连接至电感器。此引脚从PVIN变化至GND。 - Exposed Pad (Pin 11):接地。必须焊接至PCB上的电气地。 - GND (Pin 5):主电源地引脚。

4. 参数特性: - 工作电压范围:2.5V至5.5V - 反馈引脚输入电流:50nA - 反馈电压:0.588V至0.612V - 线电压调节:0.04%/V - 负载电压调节:0.02%

5. 功能详解: - LTC3565使用恒定频率、电流模式架构。通过外部分压器设置输出电压。错误放大器比较分压后的输出电压与0.6V的参考电压,并相应调整电感器电流的峰值。过压和欠压比较器会在输出电压不在±7%的调节范围内时将PGOOD输出拉低。

6. 应用信息: - LTC3565适用于需要中等功率和高效率的应用场合,如便携式设备、电信设备等。在低负载时,LTC3565可以自动切换到Burst Mode操作以优化效率。

7. 封装信息: - 封装类型:MSE Package 10-Lead Plastic MSOP, Exposed Die Pad。
LTC3565IMSE-PBF 价格&库存

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