TLC59291_15 Datasheet, PDF (15/45 Pages) Texas Instruments – TLC59291 8/16-Channel, Constant Current LED Driver with 7-bit Brightness Control Low Quiescent Current and Full Self Diagnosis for LED Lamp

www.ti.com
Timing Diagrams (continued)
TLC59291
SLVSA96 – SEPTEMBER 2015
SIDLD in FC
data latch
01b
(Internal)
High
BLANK
OUTn current
for LED lighting
Set current by external
resistor and BC data
0mA
OUTn current
for IDM
0 µA
SID holder
data
(Internal)
16 bit LOD
circuit output
data (Internal)
LOD
Old data
LOD
0000h
LAT
Low
Programmed output current
The output for IDM is not turned on because
IDM is disabled by “IDMCUR” setting.
0 µA
0mA
0 µA
When BLANK signal is “H” , all output is
forced off even if the IDM on time has not
been passed the selected time.
LOD data is held in SID holder while
BLANK is high level.
LOD
XXXXh
LOD data goes through SID holder while BLANK is low level.
LOD
XXXXh
LOD
0000h
LOD data is not stable just after BLANK goes low.
LOD
XXXXh
LOD
XXXXh
LOD
0000h
17 bit common
shift register data
(Internal)
Latched on-off control data
SID is loaded into the shift register
Figure 9. IDM Operation Timing with LOD Selected and IDM Disabled
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: TLC59291
Submit Documentation Feedback
15