LT3070
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LT3070

5A、低噪声、可编程输出、85mV 压差线性稳压器

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Info : 推荐新设计使用 tooltip
Info : 推荐新设计使用 tooltip
产品详情
产品模型 6
特性
  • 输出电流:5A
  • 压差电压:85mV (典型值)
  • 数字可编程 VOUT:0.8V 至 1.8V
  • 数字输出裕度调节:±1%、±3% 或 ±5%
  • 低输出噪声:25μVRMS (10Hz 至 100kHz)
  • 可并联多个器件以提供 10A 或更高电流
  • 精准电流限值:±20%
  • 在整个电压、负载和温度范围内提供 ±1% 的准确度
  • 可在采用低 ESR 陶瓷输出电容器 (最小电容值为 15μF) 时保持稳定
  • 高频 PSRR:30dB (在 1MHz)
  • 使能功能负责输出的接通 / 关断控制
  • VIOC 引脚用于控制降压型转换器,以保持低功耗并优化效率
  • PWRGD (电源良好) / UVLO (欠压闭锁) / 热停机标记
  • 具折返保护功能的电流限制
  • 热停机
  • 28 引脚 (4mm x 5mm x 0.75mm) QFN 封装

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LT®3070 是一款低电压、UltraFast 瞬态响应线性稳压器。该器件可提供高达 5A 的输出电流和一个 85mV 的典型压差电压。一个 0.01μF 的基准旁路电容器将输出电压噪声降低至 25μVRMS。LT3070 的高带宽允许使用低 ESR 陶瓷电容器,从而免除了大容量电容并节省了成本。LT3070 所具备的诸多特点使其非常适合于高性能 FPGA、微处理器或敏感的通信电源应用。

可以采用数字方式来选择输出电压 (可选范围为 0.8V 至 1.8V,50mV 增量)。一种裕度调节功能允许用户以 ±1%、±3% 或 ±5% 的增量来调节系统输出电压。该 IC 纳入了一种独特的跟踪功能,用于控制一个给 LT3070 输入供电的降压型稳压器。这种跟踪功能用于驱动降压型稳压器,以将 LT3070 的输入电压保持在 VOUT + 300mV,从而较大限度降低了功耗。

该器件的内部保护功能包括 UVLO、反向电流保护、具功率折返的精准电流限制和热停机。LT3070 稳压器采用耐热性能增强型 28 引脚、4mm x 5mm QFN 封装。

应用

  • FPGA 和 DSP 电源
  • ASIC 和微处理器电源
  • 服务器和存储装置
  • 后置降压调节和电源隔离

 

产品模型 6

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

参考资料

视频

产品型号 引脚/封装图-中文版 文档 CAD 符号,脚注和 3D模型
LT3070EUFD#PBF
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LT3070EUFD#TRPBF
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LT3070IUFD#PBF
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LT3070IUFD#TRPBF
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LT3070MPUFD#PBF
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LT3070MPUFD#TRPBF
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软件和型号相关生态系统

软件和型号相关生态系统

评估

评估套件 1

reference details image

DC1433A

LT3070EUFD Demo Board | 5A, Low Noise, Digitally Prog Output, Very Low Dropout Linear Regulator, 1.2V ≤ VIN ≤ 3V, VOUT = 0.8V to 1.8V @ 5A

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DC1433A

LT3070EUFD Demo Board | 5A, Low Noise, Digitally Prog Output, Very Low Dropout Linear Regulator, 1.2V ≤ VIN ≤ 3V, VOUT = 0.8V to 1.8V @ 5A

LT3070EUFD Demo Board | 5A, Low Noise, Digitally Prog Output, Very Low Dropout Linear Regulator, 1.2V ≤ VIN ≤ 3V, VOUT = 0.8V to 1.8V @ 5A

产品详情

Demonstration circuit 1433 is an adjustable 5A linear regulator featuring the LT3070. The LT3070 is a low dropout voltage, UltraFast transient response linear regulator. The device supplies up to 5A of output current with a typical dropout voltage of 85mV. A 0.01μF reference bypass capacitor decreases output voltage noise to 25μVRMS. The LT3070’s high bandwidth permits the use of low ESR ceramic capacitors. Output voltage is digitally selectable in 50mV increments over a 0.8V to 1.8V range. The demo board has a 1.2V to 3V input voltage range and a 2.5V to 3.6V BIAS voltage range. A margining function allows the user to tolerance system output voltage in increments of ±1%, ±3% or ±5%. To maintain proper performance and regulation, the BIAS supply voltage must be higher than the IN supply voltage. For a given VOUT, the BIAS voltage must satisfy the following conditions: 2.2 ≤ VBIAS ≤ 3.6V and VBIAS ≥ (1.25 · VOUT + 1V).


For VOUT ≤ 0.95V, the minimum bias voltage is limited to 2.2V.

工具和仿真

工具及仿真模型 1

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。

启动此部分的现成LTspice演示电路:

1步:下载并在计算机上安装LTspice

2步:单击下面的链接,下载演示电路。

3步:如果在单击以下链接之后LTspice未自动打开,可通过右击该链接并选择“目标另存为”来运行该仿真。将文件保存到计算机之后,请启动LTspice并从“文件”菜单中选择“打开”来打开演示电路。

参考电路

参考电路 9

Xilinx VU37P Board

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htg-937

参考设计

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特性和优点

The HTG-937 provides access to large FPGA gate density and 8GB/16GB of high bandwidth memory. It is populated with the Xilinx Zynq Virtex Ultrascale VU37P, or VU47P. Analog Devices power solution on this platform is fully validated to meet the requirements of Xilinx Zynq Virtex Ultrascale FPGAs to ensure a robust power delivery solution.

DC/DC μModule regulators are used on the HTG-937 to power Xilinx FPGA and/or SoC rails as well as other system rails. These regulators are highly integrated solutions with built in controller, power FETs, inductors, and capacitors that simplify layout and provide robust power delivery performance.

We provide supporting documentation including power schematics, layout, LTpowerPlanner and applicable LTpowerPlay configuration files to enable you to validate the power solution for your application seamlessly.

查看参考设计详情 external link
Virtex 7 PCI Express Gen 3 /100Gig Networking Card - Top View

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Xilinx Virtex 7 PCI Express Gen 3/100Gig Networking Card

特性和优点

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
查看参考设计详情 external link
Virtex-7™  10G/40G/100G Optical Interface FPGA Platform

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xilinx-virtex-7-10g-40g-100g-optical-interface-fpga-platform

特性和优点

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
查看参考设计详情 external link
DK-100G-5SGXEA7N Dev Kit

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altera-100g-development-kit-stratix-v-edition

特性和优点

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
查看参考设计详情 external link
Xilinx Zynq Networking Platform

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xilinx-zynq-networking-platform

xilinx-zynq-networking-platform

参考设计

tooltip Info:参考设计

特性和优点

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
查看参考设计详情 external link
HTG-K7-PCIE Dev Board

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xilinx-kintex-7-pci-express-development-board

特性和优点

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
查看参考设计详情 external link
Virtex™ -7 V2000T PCI Express Dev Board

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xilinx-virtex-7-v2000t-pci-express-development-board

特性和优点

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
查看参考设计详情 external link
Virtex™ -7 High-End Networking Card With Dual CXP Ports

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xilinx-virtex-7-high-end-networking-card-with-dual-cxp-ports

特性和优点

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
查看参考设计详情 external link
Stratix V Advanced System Development Board

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stratix-v-advanced-system-development-board

stratix-v-advanced-system-development-board

参考设计

tooltip Info:参考设计

特性和优点

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
查看参考设计详情 external link
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