TLC5971_15 Datasheet, PDF (1/45 Pages) Texas Instruments – 12-Channel, 16-Bit, Enhanced Spectrum, PWM, RGB, LED Driver

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
TLC5971
SBVS146D – AUGUST 2010 – REVISED DECEMBER 2015
TLC5971 12-Channel, 16-Bit, Enhanced Spectrum, PWM, RGB, LED Driver With 3.3-V
Linear Regulator
1 Features
•1 12 Constant-Current Sink Output Channels
• Current Capability: 60 mA Per Channel
• Grayscale (GS) Control With Enhanced Spectrum
PWM:
16-Bit (65536 Steps)
• Global Brightness Control (BC):
7-Bit (128 Steps) for Each Color Group
• Power-Supply Voltage Range:
– Internal Linear Regulator: 6 V to 17 V
– Direct Power Supply: 3 V to 5.5 V
• LED Supply Voltage: Up to 17 V
• Constant-Current Accuracy:
– Channel-to-Channel = ±1% (Typical)
– Device-to-Device = ±1% (Typical)
• Data Transfer Rate: 20 MHz
• Linear Voltage Regulator: 3.3 V
• Auto Display Repeat Function
• Display Timing Reset Function
• Internal and External Selectable GS Clock
• Thermal Shutdown (TSD) With Auto Restart
• Unlimited Device Cascading
• Operating Temperature Range: –40°C to +85°C
2 Applications
RGB LED Cluster Lamp Displays
3 Description
The TLC5971 device is a 12-channel, constant-
current sink driver. Each output channel has
individually adjustable currents with 65536 PWM
grayscale (GS) steps. Also, each color group can be
controlled by 128 constant-current sink steps with the
global brightness control (BC) function. GS control
and BC are accessible through a two-wire signal
interface. The maximum current value for each
channel is set by a single external resistor. All
constant-current outputs are turned off when the IC is
in an overtemperature condition.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TLC5971
HTSSOP (20)
VQFN (24)
6.50 mm × 4.40 mm
4.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Circuit Example (Internal Linear Regulator Using V_CC = 6 V to 17 V)
Power
Supply
(6 V to 17 V)
VCC
GND
1 mF
Device
GND
VCC
VREG
OUTR0
Optional
1 mF
Device
GND
VCC
VREG
OUTR0
Optional
IREF
OUTG0
IREF
OUTG0
DATA
(1)
Controller _CLK
GND
SDTI
SCKI
OUTG3
OUTB3
SDTO
SCKO
SDTI
SCKI
(1) The output voltage range is from 0 V to 3.3 V.
NOTE: The number of LEDs in series changes, depending on the VCC voltage.
OUTG3
OUTB3
SDTO
SCKO
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.