TLC59282_15 Datasheet, PDF (1/24 Pages) Texas Instruments – 16-Channel, Constant-Current LED Driver with 4-Channel Grouped Delay

TLC59282
www.ti.com
SBVS152C – DECEMBER 2010 – REVISED OCTOBER 2011
16-Channel, Constant-Current LED Driver with 4-Channel Grouped Delay
Check for Samples: TLC59282
FEATURES
1
•2 16 Channels, Constant-Current Sink Output
with On/Off Control
• Capability (Constant-Current Sink):
35 mA (V_CC ≤ 3.6 V), 45 mA (V_CC > 3.6 V)
• LED Power-Supply Voltage up to 17 V
• V_CC = 3 V to 5.5 V
• Constant-Current Accuracy:
– Channel-to-Channel = ±0.6% (typ),
±2% (max)
– Device-to-Device = ±1% (typ), ±3% (max)
• Low Saturation Voltage: 0.31 V at 20 mA (typ)
– T_A = +25℃, One Channel On
• CMOS Logic Level I/O
• Data Transfer Rate: 35 MHz
• BLANK Pulse Width: 30 ns
• Four-Channel Grouped Delay for
Noise Reduction
• Operating Temperature: –40°C to +85°C
APPLICATIONS
• Video Displays
• Message Boards
• Illumination
DESCRIPTION
The TLC59282 is a 16-channel, constant-current sink
driver. Each channel can be individually controlled via
a simple serial communications protocol that is
compatible with 3.3 V or 5 V CMOS logic levels,
depending on the operating VCC. Once the serial
data buffer is loaded, a rising edge on LATCH
transfers the data to the LEDx outputs. The BLANK
pin can be used to turn off all OUTn outputs during
power-on and output data latching to prevent
unwanted image displays during these times. The
constant-current value of all 16 channels is set by a
single external resistor. Multiple TLC59282s can be
cascaded together to control additional LEDs from the
same processor.
VLED
VLED
VLED
VLED
¼
¼
¼
Controller
DATA
SCLK
LAT
BLANK
R_IREF
¼
¼
¼ _OUT0
OUT15
SIN
SCLK
SOUT
VCC
LAT
BLANK
TLC59282
IREF
IC1
VCC
GND
R_IREF
¼
¼ _OUT0
OUT15
SIN
SCLK
SOUT
VCC
LAT
BLANK
TLC59282
IREF
ICn
VCC
GND
3
Typical Application Circuit (Multiple Daisy-Chained TLC59282s)
1
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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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.
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