LTC3220

量产

360mA 通用型 18 通道 LED 驱动器

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产品模型: 8

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产品详情

具 64 级线性亮度控制能力的 18 个 20mA 通用型电流源
采用二线式I²C 接口来实现每个电流源的独立接通 / 关断、亮度电平、闪烁和灰度等级控制
低噪声多模式充电泵 (1x、1.5x、2x) 提供高达 91% 的效率
转换速率受限的开关操作降低了传导噪声和辐射噪声 (EMI)
高达 360mA 的总输出电流
内部电流基准
单个复位引脚用于实现异步停机和所有数据寄存器的复位
提供了两个 I²C 地址 (LTC3220：0011100，LTC3220-1：0011101)
自动或强制模式切换
内部软起动功能可限制浪涌电流
短路 / 热保护
4mm x 4mm 超薄型 (高度仅 0.55mm) 28 引脚 QFN 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
LTC3220EPF#PBF	28-Lead UTQFN (4mm x 4mm x 0.55mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3220EPF#TRPBF	28-Lead UTQFN (4mm x 4mm x 0.55mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3220EPF-1#PBF	28-Lead UTQFN (4mm x 4mm x 0.55mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3220EPF-1#TRPBF	28-Lead UTQFN (4mm x 4mm x 0.55mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3220IPF#PBF	28-Lead UTQFN (4mm x 4mm x 0.55mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3220IPF#TRPBF	28-Lead UTQFN (4mm x 4mm x 0.55mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3220IPF-1#PBF	28-Lead UTQFN (4mm x 4mm x 0.55mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3220IPF-1#TRPBF	28-Lead UTQFN (4mm x 4mm x 0.55mm 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_0016 Bond Wire Change from Gold to Copper Wire (Notification Only)
		PCN25_0016_Form Material_Report Qualification Results Summary
LTC3220EPF#PBF	量产
LTC3220EPF#TRPBF	量产
LTC3220EPF-1#PBF	量产
LTC3220EPF-1#TRPBF	量产
LTC3220IPF#PBF	量产
LTC3220IPF#TRPBF	量产
LTC3220IPF-1#PBF	量产
LTC3220IPF-1#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
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
多通道电压输出数模转换器 1
LTC2657	量产	具 10ppm/ºC 最大值基准的八通道 I²C 16 位轨至轨 DAC
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

部分模型	产品周期	描述
LTC2991	推荐新设计使用	8 通道 I²C 电压、电流和温度监视器

评估套件

LTC3220EPF-1 | 360mA General Purpose LED Driver (Requires DC590)

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产品详情

Demonstration circuit 1265 is a 360mA (20mA per LED) Universal 18-Channel LED Driver with twelve white LEDs and two RGB LEDs featuring the LTC3220/LTC3220-1. The LTC3220/LTC3220-1 is a low noise boost charge pump designed to drive 18 universal LED (ULED) current sources. The charge pump automatically switches between 1x, 1.5x and 2x modes to provide the necessary output voltage. The demo board input supply voltage range is 2.9V to 5.5V. DC1265A-A features the LTC3220, and DC1265A-B features the LTC3220-1. The two parts have different I²C addresses, allowing both devices to be used in a system if more than 18 LED drivers are needed./p>

The DC1265 requires the DC590 controller board for proper operation. The 18 LEDs are includes on the demo board. The LTC3220/LTC3220-1 features include On/Off blinking, gradation, intensity, and a software controlled shutdown, which are accomplished via an I²C serial interface. There are 64 dimming states available for the universal LEDs.