LT3495
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LT3495

具输出断接功能的 650mA 微功率低噪声升压型转换器

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Info: : 量产 tooltip
Info: : 量产 tooltip
产品详情
特性
  • 低静态电流
    • 60μA (在运行模式中)
    • 0.1μA (在停机模式中)
  • 低噪声控制方案 (对于 LT3495/-1,开关频率始终高于可听范围)
  • 集成功率 NPN:
    • 650mA 电流限值 (LT3495/B)
    • 350mA 电流限值 (LT3495-1/B-1)
  • 集成输出断接功能
  • 集成输出调光功能
  • 宽输入范围:2.5V 至 16V
  • 宽输出范围:高达 40V
  • 集成反馈电阻器
  • 纤巧型 10 引脚 3mm x 2mm DFN 封装

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LT®3495 / LT3495B / LT3495-1 / LT3495B-1 是具集成电源开关、反馈电阻器和输出断接电路的低噪声升压型转换器。这些器件通过改变峰值电感器电流和开关断开时间来控制功率输送。这种新颖的控制方案在一个很宽的负载范围内实现了低输出电压纹波和高效率。对于 LT3495 / LT3495-1,开关的断开时间不允许超过某个固定值,从而保证开关频率在整个负载范围内始终高于音频频段。这些器件具有一个高性能 NPN 电源开关,其电流限值分别为 650mA (对于 LT3495 / LT3495B) 和 350mA (对于 LT3495-1 / LT3495B-1)。静态电流很低,仅为 60μA,并将在停机模式中进一步降至 0.1μA。内部断接电路能够在停机模式期间把输出电压与输入隔离开来。一个辅助基准输入 (CTRL 引脚) 以任何较低的电压值来取代内部 1.235V 反馈基准,从而实现了操作期间输出电压的全面控制。LT3495 系列采用纤巧型 10 引脚 3mm x 2mm DFN 封装。


Applications

  • OLED 电源
  • 低噪声电源
  • MP3 播放器

 

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

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
LT3495BEDDB#TRMPBF
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LT3495BEDDB#TRPBF
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LT3495BEDDB-1#TRMPBF
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LT3495BEDDB-1#TRPBF
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  • HTML
LT3495EDDB#TRMPBF
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  • HTML
LT3495EDDB#TRPBF
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LT3495EDDB-1#TRMPBF
  • HTML
  • HTML
LT3495EDDB-1#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

DC1219A-B

LT3495BEDDB Demo Board | Micropower 3-6VIN to 15VOUT at 75mA

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DC1219A-B

LT3495BEDDB Demo Board | Micropower 3-6VIN to 15VOUT at 75mA

LT3495BEDDB Demo Board | Micropower 3-6VIN to 15VOUT at 75mA

产品详情

Demonstration circuit 1219A-A, A-B, A-C and A-D are micropower low noise boost converters with output disconnect featuring the four different LT3495 versions: LT3495 (0.65A switch current, switching frequency above audible range), LT3495B (0.65A switch current), LT3495-1 (0.35 switch current, switching frequency above audible range) and LT3495B-1 (0.35A switch current). All versions convert a 3V-6V source to 15V. The A-A and A-B versions supply 75mA at 3VIN, while the A-C and A-D supply 36mA. 


All versions feature a low noise control scheme, integrated output disconnect function, dimming control and a single output sense resistor.


 


 


reference details image

DC1219A-C

LT3495EDDB-1 Demo Board | Micropower 3-6VIN to 15VOUT at 36mA

zoom

DC1219A-C

LT3495EDDB-1 Demo Board | Micropower 3-6VIN to 15VOUT at 36mA

LT3495EDDB-1 Demo Board | Micropower 3-6VIN to 15VOUT at 36mA

产品详情

Demonstration circuit 1219A-A, A-B, A-C and A-D are micropower low noise boost converters with output disconnect featuring the four different LT3495 versions: LT3495 (0.65A switch current, switching frequency above audible range), LT3495B (0.65A switch current), LT3495-1 (0.35 switch current, switching frequency above audible range) and LT3495B-1 (0.35A switch current). All versions convert a 3V-6V source to 15V. The A-A and A-B versions supply 75mA at 3VIN, while the A-C and A-D supply 36mA. 


All versions feature a low noise control scheme, integrated output disconnect function, dimming control and a single output sense resistor.


 


 


reference details image

DC1219A-D

LT3495BEDDB-1 Demo Board | 3-6VIN to 15VOUT at 36mA

zoom

DC1219A-D

LT3495BEDDB-1 Demo Board | 3-6VIN to 15VOUT at 36mA

LT3495BEDDB-1 Demo Board | 3-6VIN to 15VOUT at 36mA

产品详情

Demonstration circuit 1219A-A, A-B, A-C and A-D are micropower low noise boost converters with output disconnect featuring the four different LT3495 versions: LT3495 (0.65A switch current, switching frequency above audible range), LT3495B (0.65A switch current), LT3495-1 (0.35 switch current, switching frequency above audible range) and LT3495B-1 (0.35A switch current). All versions convert a 3V-6V source to 15V. The A-A and A-B versions supply 75mA at 3VIN, while the A-C and A-D supply 36mA. 


All versions feature a low noise control scheme, integrated output disconnect function, dimming control and a single output sense resistor.


 


reference details image

DC1219A-A

LT3495EDDB Demo Board | 3-6VIN to 15VOUT at 75mA

zoom

DC1219A-A

LT3495EDDB Demo Board | 3-6VIN to 15VOUT at 75mA

LT3495EDDB Demo Board | 3-6VIN to 15VOUT at 75mA

产品详情

Demonstration circuit 1219A-A, A-B, A-C and A-D are micropower low noise boost converters with output disconnect featuring the four different LT3495 versions: LT3495 (0.65A switch current, switching frequency above audible range), LT3495B (0.65A switch current), LT3495-1 (0.35 switch current, switching frequency above audible range) and LT3495B-1 (0.35A switch current). All versions convert a 3V-6V source to 15V. The A-A and A-B versions supply 75mA at 3VIN, while the A-C and A-D supply 36mA. 


All versions feature a low noise control scheme, integrated output disconnect function, dimming control and a single output sense resistor.


 


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。

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