TLC5951 具有 7 位点校正和 3 组 8 位全局亮度控制功能的 24 通道、12 位 PWM LED 驱动器
TLC5951 描述
The TLC5951 is a 24-channel, constant-current sink driver. Each channel has an individually-adjustable, 4096-step, pulse width modulation (PWM) grayscale (GS) brightness control and 128 step constant-current dot correction (DC). The dot correction adjusts brightness deviation between channels and other LED drivers. The output channels are grouped into three groups of eight channels. Each channel group has a 256-step global brightness control (BC) function and an individual grayscale clock input.
GS, DC, and BC data are accessible via a serial interface port. DC and BC can be programmed via a dedicated serial interface port.
The TLC5951 has three error detection circuits for LED open detection (LOD), LED short detection (LSD), and thermal error flag (TEF).
|
TLC5947 |
TLC5951 |
TLC5952 |
| Output Channels |
24 |
24 |
24 |
| Per Channel Drive(mA) |
30 |
40 |
35 |
| Ch to Ch Accuracy(Typ)(+/- %) |
2 |
1.5 |
1.0 |
| Data Transfer Rate(Typ)(MHz) |
30 |
30 |
35 |
| Data Vin(Min)(V) |
3.0 |
3.0 |
3.0 |
| Data Vin(Max)(V) |
5.5 |
5.5 |
5.5 |
| LED Voltage(Max)(V) |
30 |
15 |
15 |
| Pin/Package |
32HTSSOP, 32QFN |
38HTSSOP, 40VQFN |
32HTSSOP |
| Approx. Price (US$) |
1.20 | 1ku |
3.00 | 1ku |
2.20 | 1ku |
TLC5951 特性
- 24-Channel Constant-Current Sink Output
- Current Capability: 40 mA
- Selectable Grayscale (GS) Control with PWM:
12-Bit (4096 Step), 10-Bit (1024 Step), 8-Bit (256 Step)
- Three Independent Grayscale Clocks for Three Color Groups
- Dot Correction (DC): 7-Bit (128 Step)
- Global Brightness Control (BC) for Each Color Group: 8-Bit (256 Step)
- Auto Display Repeat Function
- Independent Data Port for GS and BC/DC Data
- Communication Path Between Each Data Port
- LED Power-Supply Voltage up to 15 V
- VCC = 3.0 V to 5.5 V
- Constant-Current Accuracy:
- Channel-to-Channel = ±1.5%
- Device-to-Device = ±3%
- CMOS Logic Level I/O
- Data Transfer Rate: 30 MHz
- 33-MHz Grayscale Control Clock
- Continuous Base LED Open Detection (LOD)
- Continuous Base LED Short Detection (LSD)
- Thermal Shutdown (TSD) with Auto Restart
TLC5951 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 |
| TLC5951DAP |
ACTIVE |
-40 to 85 |
3.60 | 1ku |
HTSSOP (DAP) | 38 |
40 | TUBE |
|
| TLC5951DAPR |
ACTIVE |
-40 to 85 |
3.00 | 1ku |
HTSSOP (DAP) | 38 |
2000 | LARGE T&R |
|
| TLC5951RHAR |
ACTIVE |
-40 to 85 |
3.00 | 1ku |
VQFN (RHA) | 40 |
2500 | LARGE T&R |
|
| TLC5951RHAT |
ACTIVE |
-40 to 85 |
3.45 | 1ku |
VQFN (RHA) | 40 |
250 | SMALL T&R |
|
TLC5951 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 |
| TLC5951DAP |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-3-260C-168 HR |
TLC5951DAP |
TLC5951DAP |
| TLC5951DAPR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-3-260C-168 HR |
TLC5951DAPR |
TLC5951DAPR |
| TLC5951RHAR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-3-260C-168 HR |
TLC5951RHAR |
TLC5951RHAR |
| TLC5951RHAT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-3-260C-168 HR |
TLC5951RHAT |
TLC5951RHAT |
TLC5951 应用技术支持与电子电路设计开发资源下载
- TLC5951 数据资料 dataSheet 下载.PDF
- TI 德州仪器照明解决方案产品选型与价格 . xls
- 照明和显示屏电源选择指南 (PDF 1427 KB)
- 笔记本电脑指南 (Rev. A) (PDF 2774 KB)
- 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)
(PDF 2206 KB)
- PowerPADTM Made Easy (PDF 57 KB)
- 标准线性产品交叉参考 (Rev. D)
(PDF 1058 KB)
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
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