TLC5952 Datasheet, PDF (9/33 Pages) Texas Instruments – 24-Channel, Constant-Current LED Driver with Global Brightness Control and LED Open-Short Detection

TLC5952
www.ti.com........................................................................................................................................................................................................ SBVS129 – MAY 2009
NAME
SIN
SCLK
TERMINAL
NO.
DAP
RHB ⁽¹⁾
2
22
3
23
LAT
4
24
BLANK
29
17
IREF
SOUT
32
20
30
18
OUTR0-
OUTR7
5, 8, 11, 14, 2, 5, 8, 11,
17, 20, 23, 14, 25, 28,
26
31
OUTG0-
OUTG7
6, 9, 12, 15, 3, 6, 9, 12,
18, 21, 24, 15, 26, 29,
27
32
OUTB0-
OUTB7
7, 10, 13,
16, 19, 22,
25, 28
1, 4, 7, 10,
13, 16, 27,
30
V_CC
GND
31
19
1
21
(1) Product preview device.
TERMINAL FUNCTIONS
I/O
DESCRIPTION
I
Serial data input for the 25-bit common shift register
Serial data shift clock. Data present on SIN are shifted to the LSB of the common
I
shift register with the rising edge of SCLK. Data in the shift register are shifted
toward the MSB at each rising edge of SCLK. The MSB data of the common shift
register appear on SOUT.
Edge triggered latch. The rising edge of LAT latches the data from the common
I
shift register into the output on/off data latch. See the Output On/Off Data Latch
section for more details.
All outputs are blank. When BLANK is high, all constant-current outputs
I
(OUTR0-OUTR7, OUTG0-OUTG7, and OUTB0-OUTB7) are forced off. When
BLANK is low, all constant current outputs are controlled by the on/off control data
in the data latch.
I/O
Reference current terminal. The maximum current for the outputs OUTR0-OUTR7,
OUTG0-OUTG7, and OUTB0-OUTB7 is set with a resistor from IREF to GND.
O
Serial data output. The MSB of the 25-bit common shift register is shifted out at the
rising edge of SCLK.
Constant-current outputs for the RED LED group.
Multiple outputs can be configured in parallel to increase the constant-current
O
capability. Different voltages can be applied to each output. These outputs are
turned on/off by the BLANK signal and the data in the output on/off control data
latch.
Constant-current outputs for the GREEN LED group.
Multiple outputs can be configured in parallel to increase the constant-current
O
capability. Different voltages can be applied to each output. These outputs are
turned on/off by the BLANK signal and the data in the output on/off control data
latch.
Constant-current outputs for the BLUE LED group.
Multiple outputs can be configured in parallel to increase the constant-current
O
capability. Different voltages can be applied to each output. These outputs are
turned on/off by the BLANK signal and the data in the output on/off control data
latch.
—
Power-supply voltage
—
Power ground
Copyright © 2009, Texas Instruments Incorporated
Product Folder Link(s): TLC5952
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