TLC5930PWPR Datasheet, PDF (1/40 Pages) Texas Instruments – 12-CHANNEL LED DRIVER

TLC5930
12-CHANNEL LED DRIVER
SLLS528 – MARCH 2002
FEATURES
D 0.2-mA to 40-mA (Constant-Current Sink)
Drive Capability x 12 Bits Output Count into
24-Pin HTSSOP Package
D 1024 Gray-Scale Display (PWM Control 1024
Steps) with Max 25-MHz Clock Frequency
D 3-Way Brightness Adjustment
– Plane Brightness Adjustment for 64 Steps
(40% to 100%)
– Frequency Division for 16 Steps
(6.3% to 100%)
– Dot Correction for 256 Steps (0% to 100%)
D DS–Link Data Input/Output (Data Rate Max
20 Mbps) with Packet Operation
D 5 Error Information Types and 2 Gray–Scale
Clock Modes
D 3.3-V V_CC and LVTTL Interface
APPLICATION
D Full- or Multi-Color LED Display
DESCRIPTION
The TLC5930 is a constant-current sink driver
with an adjustable current value, and 1024 gray
scale display that uses pulse width control. The
output current is 0.2 mA to 40 mA with 12 bits of
RGBx4. The maximum current value of the
constant-current output can be set by one external
resistor.
The TLC5930 includes three kinds of brightness
adjustment functions: one adjusts the plane
brightness between devices, changing the current
values of all outputs uniformly. The second adjusts
the frequency division to controls overall panel
brightness, and the third adjusts the dot correction
per LED, changing the current values of
independent output.
The TLC5930 also includes color–tone correction
function for correcting color per dot (pixel) and
OVM function for constant-current output
terminals used for LED failure detection.
Other features include the thermal error flag
(TEF). The active wire-check (AWC) to check the
communication between the controller and the
device. The LED leakage-detect (LKD) to detect
the reverse leakage on the LED. The GCLK error
flag (GEF) and the HSYNC error flag (HEF) by
monitoring the gray-scale clock count, and the
dual source gray-scale clock (DSG) function to
switch the gray-scale clock to the external input
clock or to switch the internally-generated clock.
The TLC5930 requires three signals for standard
operation: data input and gray-scale clock. Only
three-signal line and 24-pin HTSSOP package
reduce board area and total cost.
PowerPAD is a trademark of Texas Instruments Incorporated.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
www.ti.com
Copyright  2002, Texas Instruments Incorporated
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