Datasheet Texas Instruments TLC5942 — 数据表

Not Recommended for New Designs www.ti.com TLC5942 SBVS096B – OCTOBER 2007 – REVISED OCTOBER 2007 16-Channel, 12-Bit PWM LED Driver with
7-Bit Dot Correction FEATURES 1 16 Channels, Constant Current Sink Output 50-mA Capability (Constant Current Sink) 12-Bit (4096 Steps) Grayscale Control with
PWM 7-Bit (128 Steps) Dot Correction with Sink
Current LED Power-Supply Voltage up to 17 V Constant Current Accuracy:
– Channel-to-Channel = ±1.5%
– Device-to-Device = ±3% VCC = 3.0 V to 5.5 V CMOS Level I/O 30-MHz Data Transfer Rate 30-MHz Grayscale Control Clock Dedicated Ports for Grayscale and Dot
Correction Continuous Base LED Open Detection (LOD) Thermal Shutdown (TSD):
– Automatic shutdown at high temperature
conditions
– Restart under normal temperature
23 APPLICATIONS The TLC5942 is a 16-channel, constant current sink
driver. Each channel is individually adjustable with
4096 pulse-width modulated (PWM) steps and 128
constant current sink steps for dot correction. Dot
correction adjusts the brightness variations between
LEDs. Both grayscale control and dot correction are
accessible via separate, dedicated serial interface
ports. The maximum current value of all 16 channels
can be set by a single external resistor.
VLED VLED Вј
OUT0
GSSIN GSSCLK Controller
for Grayscale XGSLAT …