TLC5911 Datasheet, PDF (2/30 Pages) Texas Instruments – LED DRIVER

TLC5911
LED DRIVER
SLLS402 – DECEMBER 1999
description
The TLC5911 is a constant current driver incorporating shift register, data latch, and constant current circuitry
with a current value adjustable, PLL circuitry for gray scale control clock generation, and 1024 gray scale display
using pulse width control. The output current is maximum 80 mA with 16 bits, and the current value of constant
current output can be set by one external resistor. The device has two channel I/O ports. The brightness
deviation between LED modules (ICs) can be adjusted by external data input from the display data port, and
the brightness control for the panel can be accomplished by the brightness adjustment circuitry. Independent
of these functions, the device incorporates the shift register and data latch to correct the deviation between
LEDs by adjusting the output current using data from the dot correction data port. Moreover, the device
incorporates WDT circuitry, which turns constant current output off when the scan signal stops during the
dynamic scanning operation, and TSD circuitry, which turns constant current output off when the junction
temperature exceeds the limit. Also the LED open detection (LOD) circuitry is used to make error signal output
at the LED disconnection.
pin assignments
PZP PACKAGE
(TOP VIEW)
GNDLED 1
OUT0 2
OUT1 3
GNDLED 4
OUT2 5
OUT3 6
GNDLED 7
OUT4 8
OUT5 9
GNDLED 10
OUT6 11
OUT7 12
GNDLED 13
OUT8 14
OUT9 15
GNDLED 16
OUT10 17
OUT11 18
GNDLED 19
OUT12 20
OUT13 21
GNDLED 22
OUT14 23
OUT15 24
GNDLED 25
75 VCOIN
74 RBIAS
73 MAG0
72 MAG1
71 MAG2
70 PDOUT
69 GSPOL
68 GSCLK
67 BLANK
66 XENABLE
65 XOE
64 DCLK
63 XLATCH
62 DCCLK
61 XDCLAT
60 RSEL0
59 RSEL1
58 LEDCHK
57 NC
56 WDTRG
55 XDOWN1
54 XDOWN2
53 BOUT
52 XGSOUT
51 XPOUT
2
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