LT3669
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LT3669

具集成型降压转换器和 LDO 的 IO-Link 收发器

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Info : 推荐新设计使用 tooltip
Info : 推荐新设计使用 tooltip
特性
  • 可兼容 IO-Link® PHY (COM1 / COM2 / COM3)
  • 电缆接口保护至 ±60V
  • 7.5V 至 40V 工作电压
  • 集成型降压开关稳压器
    • 最大负载电流:100mA (LT3669) / 300mA (LT3669-2)
    • 可同步及可调开关频率范围:250kHz 至 2.2MHz
    •  输出电压:0.8V 至 16V
  • 集成型 150mA LDO 线性稳压器
  • 具可调摆率和电流限值的坚固型线路驱动器
  • 采用自适应线路驱动器脉冲方案以安全地开关重负载
  • 驱动器可配置为推挽、上拉或下拉
  • 可调的上电复位定时器
  • 小外形 28 引脚耐热性能增强型 4mm x 5mm QFN 封装
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LT®3669 是一款工业收发器,其包含了一个降压型开关稳压器和一个低压差线性稳压器。另外,该器件还内置了唤醒检测功能和一个可编程上电复位定时器。发送器的电流限值和摆率可在外部调节以实现更佳的 EMC 性能。

线路驱动器各能供应 / 吸收高达 250mA的电流,而当连接在一起时则可供应 / 吸收 500mA电流,并且最小残余电压低于 2.1V。由于运用了一种内部自适应脉冲方案,因而使得驱动器能够对重的容性负载和白炽灯泡进行安全的开关操作。热停机功能提供了额外的保护作用。线路接口引脚中的 ±60V 线路保护能力允许使用 L+ 工作电压高达 40V 的标准 TVS 二极管。

在 LT3669 (负载电流高达 100 mA) 中,开关稳压器集成了箝位二极管,而在 LT3669-2 (负载电流高达 300mA) 中则需要一个外部箝位二极管。

LT3669 可实现一个 IO-Link 器件 PHY。对于 IO-Link 主控器设计,请参见 LTC2874 的相关信息。



应用

  • 工业传感器和执行器

产品技术资料帮助

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ADI公司所提供的资料均视为准确、可靠。但本公司不为用户在应用过程中侵犯任何专利权或第三方权利承担任何责任。技术指标的修改不再另行通知。本公司既没有含蓄的允许,也不允许借用ADI公司的专利或专利权的名义。本文出现的商标和注册商标所有权分别属于相应的公司。

参考资料

视频

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软件和型号相关生态系统

评估套件 3

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DC1733A-A

LT3669-1 Demo Board | 7.5V to 40V input with VOUT1 being 5V at 100mA and VOUT2 (LDO) being 3.3V at 100mA

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DC1733A-A

LT3669-1 Demo Board | 7.5V to 40V input with VOUT1 being 5V at 100mA and VOUT2 (LDO) being 3.3V at 100mA

LT3669-1 Demo Board | 7.5V to 40V input with VOUT1 being 5V at 100mA and VOUT2 (LDO) being 3.3V at 100mA

产品详情

Demonstration circuit 1733A is an industrial transceiver with integrated step-down regulator and LDO featuring the LT3669. The board operates from 7.5V to 40V when JP7 is set to L+. When the JP7 is set to RES, the minimum input voltage is 16.5V. The board withstands transients up to 60V. The step-down regulator output is 5V. The LDO output is 3.3V. There are two assembly versions. DC1733A-A is for the LT3669 and DC1733A-B is for the LT3669-2. The difference is the LT3669 has an integrated catch diode. The LT3669-2 requires an external catch diode.

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DC2227A

LT3669-2 Demo Board | I/O Link with 18V to 36V Input to 4V at 300mA and 3.3V at 150mA

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DC2227A

LT3669-2 Demo Board | I/O Link with 18V to 36V Input to 4V at 300mA and 3.3V at 150mA

LT3669-2 Demo Board | I/O Link with 18V to 36V Input to 4V at 300mA and 3.3V at 150mA

产品详情

Demonstration circuit 2227A is a complete IO-Link® device built using the LT3669-2 to implement an IO-Link v1.1 physical interface (PHY). The IO-Link stack protocol runs on an Atmel ATmega microcontroller which connects to LT3669-2’s logic IO-signals to communicate with an IO-Link master via the CQ1 transceiver.

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DC1733A-B

LT3669-2 Demo Board | 7.5V to 40V input with VOUT1 being 5V at 300mA and VOUT2 (LDO) being 3.3V at 150mA

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DC1733A-B

LT3669-2 Demo Board | 7.5V to 40V input with VOUT1 being 5V at 300mA and VOUT2 (LDO) being 3.3V at 150mA

LT3669-2 Demo Board | 7.5V to 40V input with VOUT1 being 5V at 300mA and VOUT2 (LDO) being 3.3V at 150mA

产品详情

Demonstration circuit 1733A is an industrial transceiver with integrated step-down regulator and LDO featuring the LT3669. The board operates from 7.5V to 40V when JP7 is set to L+. When the JP7 is set to RES, the minimum input voltage is 16.5V. The board withstands transients up to 60V. The step-down regulator output is 5V. The LDO output is 3.3V. There are two assembly versions. DC1733A-A is for the LT3669 and DC1733A-B is for the LT3669-2. The difference is the LT3669 has an integrated catch diode. The LT3669-2 requires an external catch diode.

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