TLC5943 - 具有 7 位器件级亮度控制的 16 位 ES-PWM

TLC5943是TI德州仪器公司的一款标牌/线性产品，TLC5943是具有 7 位器件级亮度控制的 16 位 ES-PWM，本站介绍了TLC5943的封装应用图解、特点和优点、功能等，并给出了与TLC5943相关的TI元器件型号供参考。

TLC5943 - 具有 7 位器件级亮度控制的 16 位 ES-PWM - 标牌/线性 - LED驱动器 - 德州仪器

产品描述

The TLC5943 is a 16-channel, constant current sink driver. Each channel is individually adjustable with 65,536 enhanced spectrum pulse-width modulated (PWM) steps controlled by grayscale (GS) data. All output drivers are adjustable with 128 constant sink current steps at same value controlled by brightness control (BC) data. Both GS data and BC data are writable via a serial interface port. The maximum current value of all 16 channels can be set by a single external resistor.

The TLC5943 has two error detection circuits for LED open detection (LOD) and a thermal error flag (TEF). LOD detects a broken or disconnected LED and shorted LED to GND during the display period. TEF indicates an over-temperature condition; when a TEF is set, all output drivers are turned off. When the TEF is cleared, all output drivers are restarted.

产品特性

16 Channels, Constant Current Sink Output
50-mA Capability (Constant Current Sink)
16-Bit (65,536 Steps) Grayscale Control with Enhanced Spectrum (ES) PWM
7-Bit (128 Steps) Global Brightness Control for All Channels with Sink Current
LED Power-Supply Voltage up to 17 V
VCC = 3.0 V to 5.5 V
Constant Current Accuracy:
- Channel-to-Channel = ±1.5%
- Device-to-Device = ±3%
CMOS Level I/O
30-MHz Data Transfer Rate
33-MHz Grayscale Control Clock
Auto Display Repeat
Auto Data Refresh
Continuous Base LED Open Detection (LOD):
- Detect LED opening and LED short to GND during display
Thermal Shutdown (TSD):
- Automatic shutdown at high temperature conditions
- Restart under normal temperature
Readable Error Information:
- LED Open Detection (LOD)
- Thermal Error Flag (TEF)
Noise Reduction:
- 4-channel grouped delay to prevent inrush current
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. All other trademarks are the property of their respective owners.

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