TLC5946是TI公司的一款标牌/线性产品，TLC5946是具有 6 位点校正功能的 16 通道 12 位 PWM LED 驱动器，本页介绍了TLC5946的产品说明、应用、特性等，并给出了与TLC5946相关的TI元器件型号供参考。
TLC5946 - 具有 6 位点校正功能的 16 通道 12 位 PWM LED 驱动器 - 标牌/线性 - LED驱动器 - TI公司（Texas Instruments，德州仪器）
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.
- 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:
- 4-Channel Grouped Delay
- Operating Temperature: -40°C to +85°C
- APPLICATIONS
- Monochrome, Multicolor, Full-Color LED Displays
- LED Signboards
- Display Backlighting
PowerPAD is a trademark of Texas Instruments, Inc.
