TLC5946 具有 6 位点校正功能的 16 通道 12 位 PWM LED 驱动器
TLC5946 描述
The TLC5946 is a 16-channel, constant current sink LED driver. Each channel is individually adjustable with 4096 pulse-width modulated (PWM) steps and 64 constant current sink steps for dot correction. The dot correction adjusts the brightness variations between LEDs. Both grayscale control and dot correction are accessible via a serial interface. The maximum current value of all 16 channels can be set by a single external resistor.
The TLC5946 has two error information circuits: one for LED open detection (LOD), and a thermal error flag (TEF). LOD detects a broken or disconnected LED during display period. TEF indicates an over-temperature condition.
|
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 |
TLC5946 特性
- 16 Channels, Constant Current Sink Output
- 40-mA Capability (Constant Current Sink)
- 12-Bit (4096 Steps) Grayscale PWM Control
- 6-Bit (64 Steps) Dot Correction
- LED Power-Supply Voltage up to 17 V
- VCC = 3.0 V to 5.5 V
- Constant Current Accuracy:
- Channel-to-Channel = ±1% (typ)
- Device-to-Device = ±2% (typ)
- 30-MHz Data Transfer Rate
- 33-MHz Grayscale PWM Clock
- Extended Serial Interface
- CMOS Level I/O
- Schmitt Buffer Input
- Readable Error Information:
- Continuous Base LED Open Detection (LOD)
- Thermal Error Flag (TEF)
- Noise Reduction:
- Operating Temperature: -40°C to +85°C
TLC5946 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 |
| TLC5946PWP |
ACTIVE |
-40 to 85 |
2.20 | 1ku |
HTSSOP (PWP) | 28 |
50 | TUBE |
|
| TLC5946PWPR |
ACTIVE |
-40 to 85 |
1.80 | 1ku |
HTSSOP (PWP) | 28 |
2000 | LARGE T&R |
|
| TLC5946RHBR |
ACTIVE |
-40 to 85 |
2.00 | 1ku |
QFN (RHB) | 32 |
3000 | LARGE T&R |
|
| TLC5946RHBT |
ACTIVE |
-40 to 85 |
2.25 | 1ku |
QFN (RHB) | 32 |
3000 | LARGE T&R |
|
TLC5946 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 |
| TLC5946PWP |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TLC5946PWP |
TLC5946PWP |
| TLC5946PWPR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TLC5946PWPR |
TLC5946PWPR |
| TLC5946RHBR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TLC5946RHBR |
TLC5946RHBR |
| TLC5946RHBT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TLC5946RHBT |
TLC5946RHBT |
TLC5946 应用技术支持与电子电路设计开发资源下载
- TLC5946 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)
- PowerPAD™ 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)
TLC5946 相关工具
