TLC5922_14 Datasheet, PDF (1/19 Pages) Texas Instruments – LED DRIVER

TLC5922
www.ti.com
SLVS486B – SEPTEMBER 2003 – REVISED OCTOBER 2009
LED DRIVER
Check for Samples: TLC5922
FEATURES
1
•2 16 Channels
• Drive Capability
– 0 to 80 mA (Constant-Current Sink)
• Constant Current Accuracy
– ±1% (typical)
• Serial Data Interface, SPI Compatible
• Fast Switching Output: T_r / T_f = 10ns (typical)
• CMOS Level Input/Output
• 30 MHz Data Transfer Rate
• V_CC = 3.0 V to 5.5 V
• Operating Temperature = –20°C to 85 °C
• LED Supply Voltage up to 17 V
• 32-pin HTSSOP ( PowerPAD™) Package
• Dot Correction
– 7 bit (128 Steps)
– Individually Adjustable For Each Channel
VCC GND PGND SCLK
SIN
• Controlled In-Rush Current
APPLICATIONS
• Monocolor, Multicolor, Fullcolor LED Display
• Monocolor, Multicolor LED Signboard
• Display Backlighting
• Multicolor LED Lighting Applications
DESCRIPTION
The TLC5922 is a 16-channel constant-current sink
driver. Each channel has an On/Off state and a
128-step adjustable constant-current sink (dot
correction). The dot correction adjusts the brightness
variations between LED, LED channels, and other
LED drivers. Both dot correction and On/Off state are
accessible via a serial data interface. A single
external resistor sets the maximum current of all 16
channels.
MODE XLAT
BLANK
IREF
Maximum
OUTn Current
MODE
01
0
On/Off
Input
Shift
Register
15
16
112
0
DC Input
Shift
Register
111
0
1
MODE
1
0
On/Off
0
Register
7−bit DC
0
Register
6
BLANK
On/Off
1
Register
7−bit DC
7
Register
13
Constant
Current
Driver
Delay
x0
Constant
Current
Driver
Delay
x1
OUT0
OUT1
BLANK
On/Off
15
Register
7−bit DC
105
Register
111
Constant
Current
Driver
Delay
x15
OUT15
SOUT
Figure 1. Functional Block Diagram
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2003–2009, Texas Instruments Incorporated