LTC3646
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LTC3646

40V、1A、同步降压型稳压器

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Info: : 量产 tooltip
Info: : 量产 tooltip
产品详情
产品模型 24
特性
  • 宽输入电压范围:4.0V 至 40V
  • 1A 保证输出电流
  • 高效率:达 95%
  • 宽输出电压范围
    • LTC3646:2.0V 至 30V
    • LTC3646-1:0.6V 至 15V
  • 准确度达 ±1% 的基准电压
  • 内部或外部补偿
  • 开关频率可调和可同步:200kHz 至 3MHz
  • 可选择的高效率突发模式 (Burst Mode®) 操作或强制连续模式
  • 14 引脚 3mm x 4mm DFN 封装或耐热性能增强型 16 引脚 MSOP 封装

更多细节
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LTC®3646 是一款具有内部高端和同步功率 FET 的高效率、降压型 DC/DC 转换器。在突发模式操作中,其于无负载条件下仅吸收 140μA (典型值) 的 DC 电源电流,同时保持了输出电压调节作用。

LTC3646 能够提供高达 1A 的负载电流。而且,其突发模式操作、集成型电源开关与低静态电流的组合可在很宽的负载电流范围内实现高效率。另一方面,该器件也可在强制连续模式中使用以满足对纹波敏感之应用的需要。

LTC3646 具有 4.0V 至 40V 的宽输入范围,而且其获专利的受控导通时间架构及 0.6V 基准电压可实现大的降压比而不会有发生过压的风险。频率可以利用一个编程电阻器设定在 200kHz 至 3.0MHz 之间,或同步至一个外部时钟。

内部软起动、短路保护和额定电压使 LTC3646 成为一款非常适合高电压应用的坚固型器件。


Applications

  • 负载点电源
  • 中间总线电源
  • 汽车应用

产品模型 24

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

产品型号 引脚/封装图-中文版 文档 CAD 符号,脚注和 3D模型
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LTC3646EMSE-1#PBF
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LTC3646EMSE-1#TRPBF
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LTC3646HDE#PBF
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LTC3646HDE-1#PBF
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LTC3646HMSE#PBF
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LTC3646HMSE#TRPBF
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LTC3646HMSE-1#PBF
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LTC3646IDE-1#PBF
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LTC3646IDE-1#TRPBF
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LTC3646IMSE#PBF
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LTC3646IMSE#TRPBF
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LTC3646IMSE-1#PBF
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LTC3646IMSE-1#TRPBF
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根据型号筛选

reset

重置过滤器

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产品生命周期

PCN

2月 20, 2022

- 21_0269

Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products

LTC3646EDE#PBF

量产

LTC3646EDE#TRPBF

量产

LTC3646EDE-1#PBF

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LTC3646EDE-1#TRPBF

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LTC3646HDE#PBF

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LTC3646HDE#TRPBF

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LTC3646HDE-1#PBF

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LTC3646HDE-1#TRPBF

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LTC3646IDE#PBF

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LTC3646IDE#TRPBF

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LTC3646IDE-1#PBF

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LTC3646IDE-1#TRPBF

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11月 8, 2021

- 20_0245

Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

LTC3646EDE#PBF

量产

LTC3646EDE#TRPBF

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LTC3646EDE-1#PBF

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LTC3646EDE-1#TRPBF

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LTC3646EMSE#PBF

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LTC3646HDE#PBF

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LTC3646HMSE#PBF

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LTC3646HMSE#TRPBF

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LTC3646HMSE-1#TRPBF

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LTC3646IDE#PBF

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LTC3646IDE#TRPBF

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LTC3646IDE-1#PBF

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LTC3646IDE-1#TRPBF

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LTC3646IMSE#PBF

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LTC3646IMSE-1#PBF

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LTC3646IMSE-1#TRPBF

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6月 5, 2024

- 24_0003

Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

LTC3646EMSE#PBF

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LTC3646EMSE#TRPBF

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LTC3646EMSE-1#PBF

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LTC3646EMSE-1#TRPBF

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2月 4, 2020

- 20_0132

Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC

LTC3646EMSE#PBF

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LTC3646EMSE#TRPBF

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LTC3646EMSE-1#PBF

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LTC3646EMSE-1#TRPBF

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LTC3646HMSE#PBF

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LTC3646IMSE#PBF

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LTC3646IMSE#TRPBF

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LTC3646IMSE-1#PBF

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LTC3646IMSE-1#TRPBF

量产

根据型号筛选

reset

重置过滤器

产品型号

产品生命周期

PCN

2月 20, 2022

- 21_0269

arrow down

Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products

LTC3646EDE#PBF

量产

LTC3646EDE#TRPBF

量产

LTC3646EDE-1#PBF

量产

LTC3646EDE-1#TRPBF

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LTC3646HDE#PBF

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LTC3646HDE#TRPBF

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LTC3646HDE-1#PBF

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LTC3646HDE-1#TRPBF

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LTC3646IDE#PBF

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LTC3646IDE#TRPBF

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LTC3646IDE-1#PBF

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LTC3646IDE-1#TRPBF

量产

11月 8, 2021

- 20_0245

arrow down

Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

LTC3646EDE#PBF

量产

LTC3646EDE#TRPBF

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LTC3646EDE-1#PBF

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LTC3646EDE-1#TRPBF

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LTC3646EMSE#PBF

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LTC3646EMSE#TRPBF

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LTC3646EMSE-1#PBF

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LTC3646EMSE-1#TRPBF

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LTC3646HDE#PBF

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LTC3646HDE#TRPBF

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LTC3646HDE-1#PBF

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LTC3646HDE-1#TRPBF

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LTC3646HMSE#PBF

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LTC3646HMSE#TRPBF

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LTC3646HMSE-1#PBF

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LTC3646HMSE-1#TRPBF

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LTC3646IDE#PBF

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LTC3646IDE#TRPBF

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LTC3646IDE-1#PBF

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LTC3646IDE-1#TRPBF

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LTC3646IMSE#PBF

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LTC3646IMSE#TRPBF

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LTC3646IMSE-1#PBF

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LTC3646IMSE-1#TRPBF

量产

6月 5, 2024

- 24_0003

arrow down

Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

LTC3646EMSE#PBF

量产

LTC3646EMSE#TRPBF

量产

LTC3646EMSE-1#PBF

量产

LTC3646EMSE-1#TRPBF

量产

LTC3646HMSE#PBF

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LTC3646HMSE#TRPBF

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LTC3646HMSE-1#PBF

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LTC3646HMSE-1#TRPBF

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LTC3646IMSE#PBF

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LTC3646IMSE#TRPBF

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LTC3646IMSE-1#PBF

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LTC3646IMSE-1#TRPBF

量产

2月 4, 2020

- 20_0132

arrow down

Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC

LTC3646EMSE#PBF

量产

LTC3646EMSE#TRPBF

量产

LTC3646EMSE-1#PBF

量产

LTC3646EMSE-1#TRPBF

量产

LTC3646HMSE#PBF

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LTC3646HMSE#TRPBF

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LTC3646HMSE-1#PBF

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LTC3646HMSE-1#TRPBF

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LTC3646IMSE#PBF

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LTC3646IMSE#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

评估套件

评估套件 4

reference details image

DC1731A-A

LTC3646 Demo Board (DFN) | 4V ≤ VIN ≤ 40V, VOUT = 3.3V or 5V @ 1A

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DC1731A-A

LTC3646 Demo Board (DFN) | 4V ≤ VIN ≤ 40V, VOUT = 3.3V or 5V @ 1A

LTC3646 Demo Board (DFN) | 4V ≤ VIN ≤ 40V, VOUT = 3.3V or 5V @ 1A

产品详情

Demonstration circuit 1731A-A is a DC/DC converter demo board using the LTC3646 monolithic synchronous buck regulator in the DFN package. The input voltage range is from 4V to 40V. The output voltage range of LTC3646 is 2V to 30V. It can deliver up to 1A of output current. At light load conditions, DC1731A can operate in Burst Mode® operation to improve the efficiency. The user can choose to use internal or external compensation. The switching frequency of LTC3646 is programmable from 200kHz to 3MHz. It can be synchronized to an external clock through the MODE/SYNC pin.

reference details image

DC1731A-B

LTC3646-1 Demo Board (DFN) | 4V ≤ VIN ≤ 40V, VOUT = 3.3V or 5V @ 1A

zoom

DC1731A-B

LTC3646-1 Demo Board (DFN) | 4V ≤ VIN ≤ 40V, VOUT = 3.3V or 5V @ 1A

LTC3646-1 Demo Board (DFN) | 4V ≤ VIN ≤ 40V, VOUT = 3.3V or 5V @ 1A

产品详情

Demonstration circuit 1731A-B is a DC/DC converter demo board using the LTC3646-1 monolithic synchronous buck regulator in the DFN package. The input voltage range is from 4V to 40V. The output voltage range of LTC3646-1 is 0.6V to 15V. It can deliver up to 1A of output current. At light load conditions, DC1731A can operate in Burst Mode® operation to improve the efficiency. The user can choose to use internal or external compensation. The switching frequency of LTC3646-1 is programmable from 200kHz to 3MHz. It can be synchronized to an external clock through the MODE/SYNC pin.

reference details image

DC1820A-B

LTC3646-1 Demo Board (MSOP) | 4V ≤ VIN ≤ 40V, VOUT= 3.3V or 5V @ 1A

zoom

DC1820A-B

LTC3646-1 Demo Board (MSOP) | 4V ≤ VIN ≤ 40V, VOUT= 3.3V or 5V @ 1A

LTC3646-1 Demo Board (MSOP) | 4V ≤ VIN ≤ 40V, VOUT= 3.3V or 5V @ 1A

产品详情

Demonstration circuit 1820A-A/1820A-B is a step-down DC/DC converter using LTC3646/LTC3646-1 monolithic synchronous buck regulator. The input voltage range is from 4V to 40V. The output voltage range of LTC3646 is 2V to 30V, for LTC3646-1 is 0.6V to 15V. It can deliver up to 1A of output current. At light load conditions, DC1820A can operate in Burst Mode® operation to improve the efficiency. The user can choose to use internal or external compensation. The switching frequency of LTC3646/LTC3646-1 is programmable from 200kHz to 3MHz. It can be synchronized to an external clock through the MODE/ SYNC pin. The LTC3646/LTC3646-1 data sheet must be read in conjunction with this demo manual prior to working on or modifying demonstration circuit 1820A.

reference details image

DC1820A-A

LTC3646 Demo Board (MSOP) | 4V ≤ VIN ≤ 40V, VOUT = 3.3V or 5V @ 1A

zoom

DC1820A-A

LTC3646 Demo Board (MSOP) | 4V ≤ VIN ≤ 40V, VOUT = 3.3V or 5V @ 1A

LTC3646 Demo Board (MSOP) | 4V ≤ VIN ≤ 40V, VOUT = 3.3V or 5V @ 1A

产品详情

Demonstration circuit 1820A-A/1820A-B is a step-down DC/DC converter using LTC3646/LTC3646-1 monolithic synchronous buck regulator. The input voltage range is from 4V to 40V. The output voltage range of LTC3646 is 2V to 30V, for LTC3646-1 is 0.6V to 15V. It can deliver up to 1A of output current. At light load conditions, DC1820A can operate in Burst Mode® operation to improve the efficiency. The user can choose to use internal or external compensation. The switching frequency of LTC3646/LTC3646-1 is programmable from 200kHz to 3MHz. It can be synchronized to an external clock through the MODE/ SYNC pin. The LTC3646/LTC3646-1 data sheet must be read in conjunction with this demo manual prior to working on or modifying demonstration circuit 1820A.

工具和仿真

工具及仿真模型 2

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。

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