TLC59291_15 Datasheet, PDF (3/45 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

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5 Pin Configuration and Functions
RGE Package
24-Pin VQFN
(Top View)
TLC59291
SLVSA96 – SEPTEMBER 2015
LAT 1
OUT0 2
OUT1 3
OUT2 4
OUT3 5
OUT4 6
Thermal Pad
(Bottom Side)
18 BLANK
17 OUT15
16 OUT14
15 OUT13
14 OUT12
13 OUT11
PIN
NAME
NO.
BLANK
18
GND
22
IREF
20
LAT
1
Pin Functions
I/O
DESCRIPTION
BLANK PIN, has two configures:
When FC9(BLANK Mode) = 0, Blank pin worked as SOUT select pin:
a. When BLANK = Low, SOUT is connected to the bit 7 of the 16-bit shift register, worked as 8ch
device;
b. When BLANK = High, SOUT is connected to the bit 15 of the 16-bit shift register, worked as
I
16ch device;
When FC9(BLANK Mode) = 1, Blank pin worked as OUTPUT enable pin;
a. When BLANK = Low, all constant current outputs are controlled by the on/off control data in the
data latch.
b. When BLANK = High, all OUTx are forced off
— Ground
Maximum current programming terminal.
I/O
A resistor connected between IREF and GND sets the maximum current for every constant-current
output. When this terminal is directly connected to GND, all outputs are forced off. The external
resistor should be placed close to the device and must be in the range of 1.32 kΩ to 66 kΩ.
Data latch.
The rising edge of LAT latches the data from the common shift register into the output on/off data
I latch. At the same time, the data in the common shift register are replaced with SID, which is
selected by SIDLD. See the Output On/Off Data Latch section and Status Information Data (SID)
section for more details.
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