TLC5926-Q1 Datasheet, PDF (3/27 Pages) Texas Instruments – 16-CHANNEL CONSTANT-CURRENT LED SINK DRIVERS

TLC5926-Q1
TLC5927-Q1
www.ti.com ......................................................................................................................................................................................... SLVS973 – SEPTEMBER 2009
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
NOTE: The exposed thermal pad should be connected to ground in all applications.
NAME
CLK
GND
LE(ED1)
OE(ED2)
OUT0–OUT15
R-EXT
SDI
SDO
VDD
Exposed
Thermal Pad
Pin Descriptions
DESCRIPTION
Clock input for data shift on rising edge
Ground for control logic and current sink
Data strobe input
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. 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 pullup.
Constant-current output
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
Connect to GND. The thermal pad should be soldered to ground in all applications.
Table 2. 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 © 2009, Texas Instruments Incorporated
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