LT3502

量产

采用 2mm x 2mm DFN 封装的 1.1MHz/2.2MHz、500mA 降压型稳压

数据手册产品选型表

产品模型: 16

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产品详情

3V 至 40V 输入电压范围
500mA 输出电流
开关频率：2.2MHz (LT3502A)、1.1MHz (LT3502)
800mV 反馈电压
抗短路性能强
软起动
低停机电流：< 2μA
内部补偿
内部升压二极管
耐热增强型 2mm x 2mm 8 引脚 DFN 和 10 引脚 MS10 封装

参考资料

ADI 始终高度重视提供符合最高质量和可靠性水平的产品。我们通过将质量和可靠性检查纳入产品和工艺设计的各个范围以及制造过程来实现这一目标。出货产品的“零缺陷”始终是我们的目标。查看我们的质量和可靠性计划和认证以了解更多信息。

产品型号	引脚/封装图-中文版	文档	CAD 符号，脚注和 3D模型
LT3502AEDC#TRMPBF	8-Lead DFN (2mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3502AEDC#TRPBF	8-Lead DFN (2mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3502AEMS#PBF	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3502AEMS#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3502AIDC#TRMPBF	8-Lead DFN (2mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3502AIDC#TRPBF	8-Lead DFN (2mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3502AIMS#PBF	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3502AIMS#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3502EDC#TRMPBF	8-Lead DFN (2mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3502EDC#TRPBF	8-Lead DFN (2mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3502EMS#PBF	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3502EMS#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3502IDC#TRMPBF	8-Lead DFN (2mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3502IDC#TRPBF	8-Lead DFN (2mm x 2mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3502IMS#PBF	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT3502IMS#TRPBF	10-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys

产品型号	产品生命周期	PCN

10月 11, 2022 - 22_0244 Epoxy Change from Henkel 8290 to 8290A for MSOP Package
		PCN22_0244_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LT3502AEMS#PBF	量产
LT3502AEMS#TRPBF	量产
7月 12, 2022 - 22_0157 UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages [With Modification in BOM]
		PCN22_0157_Form Material_Report Qualification Results Summary Delta Qualification Matrix Detailed Parts List
LT3502AEMS#PBF	量产
LT3502AEMS#TRPBF	量产
6月 21, 2022 - 22_0050 UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices
		PCN22_0050_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LT3502AEMS#PBF	量产
LT3502AEMS#TRPBF	量产
2月 4, 2020 - 20_0130 Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0130_Form Material_Report
LT3502AEMS#PBF	量产
LT3502AEMS#TRPBF	量产
LT3502AIMS#PBF	量产
LT3502AIMS#TRPBF	量产
LT3502EMS#PBF	量产
LT3502EMS#TRPBF	量产
LT3502IMS#PBF	量产
LT3502IMS#TRPBF	量产
6月 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)
		PCN24_0003_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LT3502AIMS#PBF	量产
LT3502AIMS#TRPBF	量产
LT3502EMS#PBF	量产
LT3502EMS#TRPBF	量产
LT3502IMS#PBF	量产
LT3502IMS#TRPBF	量产
4月 18, 2022 - 22_0050 UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices
		PCN22_0050_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LT3502EMS#PBF	量产
LT3502EMS#TRPBF	量产

这是最新版本的数据手册

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
数字温度传感器 1
LTC2991	推荐新设计使用	8 通道 I²C 电压、电流和温度监视器
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

部分模型	产品周期	描述
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
LTC2960	推荐新设计使用	36V、纳安级电流、两输入电压监视器
LT4363	推荐新设计使用	具电流限制功能的高电压浪涌抑制器
LTC2991	推荐新设计使用	8 通道 I²C 电压、电流和温度监视器

工具及仿真模型

LTspice 3

LTspice中提供以下器件型号：

LT3502
LT3502A

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。

评估套件

LT3502EDC Demo Board | 1.1MHz, 500mA Step-Down Regulator

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产品详情

Demo circuit DC1221B is a monolithic step-down DC/DC switching regulator featuring the LT3502. The demo circuit is designed for 3.3V output from a 4.5V to 40V input. The wide input range of the LT3502 allows a variety of input sources including automotive batteries and 24V industrial supplies. The high switching frequency allows the use of tiny, low cost external components. The current mode control scheme creates fast transient response and good loop stability. The boost diode is internal to reduce component count. The SHDN pin can also be used to program soft start. In this mode, the SHDN pin is driven through an external RC filter to create a voltage ramp on this pin. The soft start function reduces the input current surge during start-up. Cycle by cycle current limit and frequency foldback provide the protection against shorted outputs. DA pin can further protect the silicon under fault conditions by sensing the diode current.

资料

DC1221B - Demo Manual
219.00K

DC1221B - Schematic
35.00K

DC1221B - Design Files
468.00K

LT3502AEDC Demo Board | 7V to 40V Input to 5V at 500mA

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产品详情

Demonstration circuit 1089 is a monolithic step-down DC/DC switching regulator featuring the LT3502A. The demo circuit is designed for 5V output from a 7V to 40V input. The wide input range of the LT3502A allows a variety of input sources including automotive batteries and 24V industrial supplies. The high switching frequency allows the use of tiny, low cost external components. Constant switching frequency above the AM band avoids interfering with radio reception. The current mode control scheme creates fast transient response and good loop stability. The boost diode is internal to reduce component count. The SHDN pin can also be used to program soft start. In this mode, the SHDN pin is driven through an external RC filter to create a voltage ramp on this pin. The soft start function reduces the input current surge during start-up. Cycle by cycle current limit and frequency foldback provide the protection against shorted outputs. DA pin can further protect the silicon under fault conditions by sensing the diode current.