LTC3388

推荐新设计使用

20V、高效率、毫微功率降压型稳压器

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产品技术资料帮助

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。

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产品详情

  • 在调节状态中输入 IQ 为 720nA (无负载,VIN = 4V)
  • 在调节状态中输入 IQ 为 820nA (无负载,VIN = 20V)
  • 在 UVLO 状态中输入 IQ 为 400nA
  • 2.7V 至 20V 输入工作电压范围
  • 输出电流高达 50mA
  • 可通过引脚来选择的输出电压:
    • 1.2V、1.5V、1.8V、2.5V (LTC3388-1)
    • 2.8V、3.0V、3.3V、5.0V (LTC3388-3)
  • 高效率迟滞同步 DC/DC 转换
  • 待机模式可禁止执行降压开关操作
  • 采用 10 引脚 MSE 封装和 3mm x 3mm DFN 封装

 

LTC3388
20V、高效率、毫微功率降压型稳压器
50mA Step-Down Converter Efficiency vs Load Current Product Package 1 Product Package 2
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参考资料

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硬件生态系统

部分模型 产品周期 描述
PowerPath、理想二极管和负载开关 1
LTC4359 推荐新设计使用 具反向输入保护功能的理想二极管控制器
浪涌抑制器、过压和过流保护 1
LT4363 推荐新设计使用 具电流限制功能的高电压浪涌抑制器
数字电源系统管理器 1
LTC2974 推荐新设计使用 具有精确输出电流的4通道PMBus电源系统管理器
双电源监控器 1
LTC2960 推荐新设计使用 36V、纳安级电流、两输入电压监视器
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工具及仿真模型

LTspice

LTspice®是一款强大高效的免费仿真软件、原理图采集和波形观测器,为改善模拟电路的仿真提供增强功能和模型。


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eval board
DC1658A-B

LTC3388EMSE-3 Demo Board | 2.8V ≤ VIN ≤ 20V, VOUT = 2.8V to 5V @ 50mA

产品详情

Demonstration Circuit DC1658A is a 20V High Efficiency Nanopower Step-Down Regulator featuring the LTC3388-1/ LTC3388-3. The LTC3388 is an ultralow quiescent current power supply designed to regulate the output voltage by means of a nanopower high efficiency synchronous buck regulator. The input current is only 720nA typical at no load while maintaining output voltage regulation, capable of supplying 50mA of load current. The LTC3388-1/ LTC3388-3 also in-corporates an accurate undervoltage lockout feature to disable the converter and maintain a low quiescent current state when the input voltage falls below 2.3V. In regulation, the LTC3388-1/LTC3388-3 enter a sleep state in which both input and output quiescent currents are minimal. The buck converter turns on and off as needed to maintain regulation. An additional standby mode disables the buck switching while the  output is in regulation for short duration loads requiring low ripple.

eval board
DC1658A-A

LTC3388EMSE-1 Demo Board | 2.7V ≤ VIN ≤ 20V, VOUT = 1.2V to 2.5V @ 50mA

产品详情

Demonstration Circuit DC1658A is a 20V High Efficiency Nanopower Step-Down Regulator featuring the LTC3388-1/ LTC3388-3. The LTC3388 is an ultralow quiescent current power supply designed to regulate the output voltage by means of a nanopower high efficiency synchronous buck regulator. The input current is only 720nA typical at no load while maintaining output voltage regulation, capable of supplying 50mA of load current. The LTC3388-1/ LTC3388-3 also incorporates an accurate undervoltage lockout feature to disable the converter and maintain a low quiescent current state when the input voltage falls below 2.3V. In regulation, the LTC3388-1/LTC3388-3 enter a sleep state in which both input and output quiescent currents are minimal. The buck converter turns on and off as needed to maintain regulation. An additional standby mode disables the buck switching while the  output is in regulation for short duration loads requiring low ripple.


 


DC1658A-B
LTC3388EMSE-3 Demo Board | 2.8V ≤ VIN ≤ 20V, VOUT = 2.8V to 5V @ 50mA
DC1658A-B - Schematic
DC1658A-A
LTC3388EMSE-1 Demo Board | 2.7V ≤ VIN ≤ 20V, VOUT = 1.2V to 2.5V @ 50mA
DC1658A-B - Schematic

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