TLC5943PWP

产品概述

The TLC5943PWP is a 16-channel 16-bit PWM LED Driver with 7-bit global brightness control. Each channel is individually adjustable with 65,536 enhanced spectrum pulse-width modulated (PWM) steps controlled by greyscale (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.

• 16 channels, constant-current sink output
• 16-bit (65,536 steps) Greyscale control with enhanced spectrum (ES) PWM
• 7-bit (128 steps) Global brightness control for all channels with sink current
• Constant-current accuracy
• CMOS level I/O
• 30MHz Data transfer rate
• 33MHz Greyscale control clock
• Auto display repeat
• Auto data refresh
• Continuous base LED open detection (LOD)

• Automatic thermal shutdown at high temperature conditions
• Thermal error flag (TEF)
• Noise reduction (4-channel grouped delay to prevent inrush current)
• Green product and no Sb/Br

应用

发光二极管照明, 照明, 多媒体