TLC5926 Datasheet, PDF (3/29 Pages) Texas Instruments – 16-CHANNEL CONSTANT-CURRENT LED SINK DRIVERS

TLC5926, TLC5927
www.ti.com ....................................................................................................................................................................................................... SLVS677 – JULY 2008
DBQ, DW, OR PWP PACKAGE
(TOP VIEW)
GND 1
SDI 2
CLK 3
LE(ED1) 4
OUT0 5
OUT1 6
OUT2 7
OUT3 8
OUT4 9
OUT5 10
OUT6 11
OUT7 12
24 VDD
23 R-EXT
22 SDO
21 OE(ED2)
20 OUT15
19 OUT14
18 OUT13
17 OUT12
16 OUT11
15 OUT10
14 OUT9
13 OUT8
PIN NAME
CLK
GND
LE(ED1)
OE(ED2)
OUT0–OUT15
R-EXT
SDI
SDO
VDD
Pin Descriptions
DESCRIPTION
Clock input pin for data shift on rising edge
Ground pin for control logic and current sink
Data strobe input pn
Serial data is transferred to the respective latch when LE(ED1) is high. The data is latched when LE(ED1) goes low.
Also, a control signal input for an Error Detection mode and Current Adjust mode (See Timing Diagram). LE(ED1) has
an internal pulldown.
Output enable pin. When OE (ED2)(active) is low, the output drivers are enabled; when OE(ED2) is high, all output
drivers are turned OFF (blanked). Also, a control signal input for an Error Detection mode and Current Adjust mode
(See Timing Diagram). OE(ED2) has an internal pull-up.
Constant-current output pins
Input pin used to connect an external resistor for setting up all output currents
Serial-data input to the Shift register
Serial-data output to the following SDI of next driver IC or to the microcontroller
Supply voltage pin
Diagnostic Features
DEVICE ⁽¹⁾
TLC5926
TLC5927
OPEN-LOAD
DETECTION
x
x
SHORT TO GND
DETECTION
x
x
SHORT TO V_LED
DETECTION
x
(1) The device has one single error register for all these conditions (one error bit per channel)
Copyright © 2008, Texas Instruments Incorporated
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Product Folder Link(s): TLC5926 TLC5927