LTC2945

推荐新设计使用

宽范围 I²C 功率监视器

数据手册 (Rev. C) 产品选型表

产品模型: 26

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产品详情

轨到轨输入范围：0V至80V
宽输入电源电压范围：2.7V至80V
用于>80V电源的分流稳压器
具有小于±0.75%总非调整误差的ΔΣ型ADC
针对电流和电压的12位分辨率
内部乘法器用于计算24位功率值
存储最小值和最大值

超出限值时发出警告
额外ADC输入可监控外部电压
连续扫描和快照模式
I_Q < 80μA的关断模式
分离SDA用于光隔离
提供12引脚3mm × 3mm QFN和MSOP封装
通过AEC-Q100汽车应用认证

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
LTC2945CMS#PBF	12-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945CMS#TRPBF	12-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945CMS-1#PBF	12-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945CMS-1#TRPBF	12-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945CUD#PBF	12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945CUD#TRPBF	12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945CUD-1#PBF	12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945CUD-1#TRPBF	12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945HMS#PBF	12-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945HMS#TRPBF	12-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945HMS-1#PBF	12-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945HMS-1#TRPBF	12-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945HUD#PBF	12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945HUD#TRPBF	12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945HUD#WPBF	12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945HUD#WTRPBF	12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945HUD-1#PBF	12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945HUD-1#TRPBF	12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945IMS#PBF	12-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945IMS#TRPBF	12-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945IMS-1#PBF	12-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945IMS-1#TRPBF	12-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945IUD#PBF	12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945IUD#TRPBF	12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945IUD-1#PBF	12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2945IUD-1#TRPBF	12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

产品型号	产品生命周期	PCN

2月 14, 2025 - 25_0017 Bond Wire Change from Gold to Copper
		PCN25_0017_Form Material_Report Qualification Results Summary
LTC2945CMS#PBF	量产
LTC2945CMS#TRPBF	量产
LTC2945CMS-1#PBF	量产
LTC2945CMS-1#TRPBF	量产
LTC2945CUD#PBF	量产
LTC2945CUD#TRPBF	量产
LTC2945CUD-1#PBF	量产
LTC2945CUD-1#TRPBF	量产
LTC2945HMS#PBF	量产
LTC2945HMS#TRPBF	量产
LTC2945HMS-1#PBF	量产
LTC2945HMS-1#TRPBF	量产
LTC2945HUD#WPBF
LTC2945HUD#WTRPBF
LTC2945HUD-1#PBF	量产
LTC2945HUD-1#TRPBF	量产
LTC2945IMS-1#PBF	量产
LTC2945IMS-1#TRPBF	量产
LTC2945IUD-1#PBF	量产
LTC2945IUD-1#TRPBF	量产
6月 5, 2024 - 24_0004 Epoxy Change from Henkel 8290 to 8290A for MSOP (3)
		PCN24_0004_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC2945CMS#PBF	量产
LTC2945CMS#TRPBF	量产
LTC2945CMS-1#PBF	量产
LTC2945CMS-1#TRPBF	量产
LTC2945HMS#PBF	量产
LTC2945HMS#TRPBF	量产
LTC2945IMS#PBF	量产
LTC2945IMS#TRPBF	量产
LTC2945IMS-1#PBF	量产
LTC2945IMS-1#TRPBF	量产
2月 4, 2020 - 20_0129 Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0129_Form Material_Report
LTC2945CMS#PBF	量产
LTC2945CMS#TRPBF	量产
LTC2945CMS-1#PBF	量产
LTC2945CMS-1#TRPBF	量产
LTC2945HMS#PBF	量产
LTC2945HMS#TRPBF	量产
LTC2945HMS-1#PBF	量产
LTC2945HMS-1#TRPBF	量产
LTC2945IMS#PBF	量产
LTC2945IMS#TRPBF	量产
LTC2945IMS-1#PBF	量产
LTC2945IMS-1#TRPBF	量产
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
LTC2945HMS-1#PBF	量产
LTC2945HMS-1#TRPBF	量产

这是最新版本的数据手册

软件资源

器件驱动器 1

LTC2945 GitHub Linux Driver Source Code

硬件生态系统

部分模型	产品周期	描述
I²C 隔离器 1
LTM2883	量产	具可调 ±12.5V 和 5V 稳定电源的 SPI / 数字或 I²C μModule 隔离器
串行总线缓冲器、扩展器和加速度计 1
LTC4317	量产	双通道 I²C / SMBus 地址转换器
电流检测放大器 1
LTC2946	推荐新设计使用	宽范围 I²C 功率、电荷和能量监视器
高压热插拔控制器 1
LTC4260	推荐新设计使用	具 I²C 兼容型监视功能的正高电压热插拔控制器

工具及仿真模型

LTspice 1

LTC2945 - Specialty Amplifiers

LTspice中提供以下器件型号：

LTC2945

Linduino 3

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。

Linduino是ADI公司的Arduino兼容系统，用于开发和分配面向集成电路的固件库和示例代码。每个支持Linduino的产品包括示例主程序（在LTSketchbook/产品型号文件夹中定义）和驱动程序代码（在LTSketchbook/库文件夹中定义）。

GitHub上的Linduino代码存储库以及有关如何使用代码的说明。

购买Linduino

评估套件

LTC2945演示板 | 宽范围I2C电源监控器（需要DC2026）

立即购买更多内容

产品详情

演示电路1697A内置LTC2945。LTC2945是一款轨到轨系统监控器，用于测量电流、电压和功耗。它具有2.7V至80V的工作电压范围，并为高于80V的电源提供分流稳压器，以便灵活选择输入电源。0V至80V的电流共模测量范围与输入电源无关。片上0.75%精度12位ADC用于测量负载电流、输入电压和辅助外部电压。通过将测得的12位负载电流和输入电压数据进行数字乘法运算，可得到24位功率值。可存储最大值和最小值，而具有可编程阈值的超量程提示尽可能减少了对软件轮询的需要。通过标准l²C接口报告数据。该演示板用于连接5A应用。这可以通过相应地填充R1来改变。

资料

DC1697A - Schematic
38.00K

DC1697A - Design Files
2.00M

DC1697A - Demo Manual
470.00K

参考电路

查看参考设计详情

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