TLC5944 Datasheet, PDF (6/34 Pages) Texas Instruments – 16-Channel, 12-Bit PWM LED Driver with 6-Bit Dot Correction and Pre-Charge FET

TLC5944
SBVS112 – JUNE 2008 ...................................................................................................................................................................................................... www.ti.com
FUNCTIONAL BLOCK DIAGRAM
VUP
VCC
VUP
VCC
SIN
SCLK
XLAT
DCSEL
33rd GSCLK Signal
After BLANK Goes Low
LED Open Detection Data Latch
16
(16 LOD)
16
LSB
MSB
Grayscale Shift Register
(12 Bits x 16 Channels)
0
191
192
LSB
MSB
Grayscale Data Latch
(12 Bits x 16 Channels)
0
191
LSB
MSB
Dot Correction Shift Register
(6 Bits x 16 Channels)
0
95
192
96
LSB
MSB
Dot Correction Data Latch
(6 Bits x 16 Channels)
0
95
XERR
Control
GSCLK
BLANK
IREF
GND
Grayscale
Counter
Reference
Current
Control
GND
12
12-Bit PWM Timing Control
16
96
Output Switching Delay
(4-Channel Unit)
16
Constant Current Sink Driver With Dot Correction
(16 Channels)
LED Open Detection
(LOD, 16 Channels)
Pre-Charge FET
(16 Channels)
Thermal
Detection
and
Flag Control
(+162 C/+120 C)
°
°
16
VUP
XERR
SOUT
OUT0 OUT1
¼
OUT14 OUT15
6
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