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TLC5944 具有 6 位点校正功能和预充电 FET 的 16 通道 12 位 PWM LED 驱动器

TLC5944 描述

The TLC5944 is a 16-channel, constant current sink driver. Each channel is individually adjustable with 4096 pulse-width modulated (PWM) steps and 64 constant sink current (dot correction) steps. The dot correction (DC) adjusts for brightness variations between LEDs. Both grayscale (GS) control and DC are accessible via a common serial interface port. The maximum current value of all 16 channels can be set by a single external resistor. The TLC5944 has an internal pre-charge FET to prevent the ghost-lighting phenomenon that occurs on multiplexed LED systems. The TLC5944 has three error detection circuits for LED open detection (LOD), a thermal error flag (TEF), and a pre-thermal warning (PTW). The LOD detects a broken or disconnected LED, and a shorted LED to GND during the display period

TLC5940 TLC59401 TLC5941 TLC5942 TLC5943 TLC5944 TLC5945 TLC5946 TLC59461
Output Channels 16 16 16 16 16 16 16 16 16
PWM Dimming Steps 4096 4096 4096 4096 65536 4096 4096 4096 4096
Analog Dimming Steps 64 64 64 64 128 64 64 64 64
Per Channel Drive(mA) 120 0~80mA(Vcc≤3.6V) ,0~120mA(Vcc>3.6V) 80 50 50 60 80 40 40
Ch to Ch Accuracy(Typ)(+/- %) 1 1 1 1.5 1.5 1 1 1 1
Data Input Serial Serial Serial Serial Serial Serial Serial Serial Serial
Data Transfer Rate(Typ)(MHz) 30 30 30 30 30 30 30 30 30
Data Vin(Min)(V) 3 3 3 3 3 3 3 3 3
Data Vin(Max)(V) 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5
LED Voltage(Max)(V) 17 17 17 17 17 15 17 17 17
Pin/Package 28HTSSOP, 28PDIP, 32QFN 28HTSSOP, 32QFN 28HTSSOP, 28PDIP, 32QFN 28HTSSOP, 32QFN 28HTSSOP, 32QFN 28HTSSOP, 32QFN 28HTSSOP, 32QFN 28HTSSOP, 28TSSOP, 32QFN 28HTSSOP
Approx. Price (US$) 1.25 | 1ku 1.80 | 1ku 1.00 | 1ku 1.10 | 1ku 1.25 | 1ku 1.10 | 1ku 1.10 | 1ku 1.00 | 1ku 1.05 | 1ku
TLC5944 特性
TLC5944 芯片订购指南
器件 状态   价格(美元) | Quantity 封装 | 引脚 封装数量 | 封装载体 丝印标记
TLC5944PWP ACTIVE -40 to 85 2.20 | 1ku HTSSOP (PWP) | 28 50 | TUBE  
TLC5944PWPR ACTIVE -40 to 85 1.80 | 1ku HTSSOP (PWP) | 28 2000 | LARGE T&R  
TLC5944RHBR ACTIVE -40 to 85 2.00 | 1ku QFN (RHB) | 32 3000 | LARGE T&R  
TLC5944RHBT ACTIVE -40 to 85 2.25 | 1ku QFN (RHB) | 32 3000 | LARGE T&R  
TLC5944 质量与无铅数据
器件 环保计划* 铅/焊球涂层 MSL 等级/回流焊峰 环保信息与无铅 (Pb-free) DPPM / MTBF / FIT 率
TLC5944PWP Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR TLC5944PWP TLC5944PWP
TLC5944PWPR Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR TLC5944PWPR TLC5944PWPR
TLC5944RHBR Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR TLC5944RHBR TLC5944RHBR
TLC5944RHBT Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR TLC5944RHBT TLC5944RHBT
TLC5944 应用技术支持与电子电路设计开发资源下载
  1. TLC5944 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器照明解决方案产品选型与价格 . xls
  3. 照明和显示屏电源选择指南 (PDF 1427 KB)
  4. 笔记本电脑指南 (Rev. A) (PDF 2774 KB)
  5. 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A) (PDF 2206 KB)
  6. PowerPADTM Made Easy (PDF 57 KB)
  7. 标准线性产品交叉参考 (Rev. D) (PDF 1058 KB)
  8. 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
  9. 所选封装材料的热学和电学性质 (PDF 645 KB)
  10. 高速数据转换 (PDF 1967 KB)
TLC5944 相关工具
名称 型号 公司 工具/软件类型
TLC5944 评估模块 TLC5944EVM Texas Instruments 开发电路板/EVM
TLC5944 评估模块 TLC5944EVM-248 Texas Instruments 开发电路板/EVM
TLC5944 LED 驱动器评估模块 TLC5944EVM-358 Texas Instruments 开发电路板/EVM
LED 框架设计者软件 LED-FRAME-DESIGNER Texas Instruments 应用软件