TLC5958 Datasheet, PDF (1/28 Pages) Texas Instruments – TLC5958 48-Channel, 16-Bit ES-PWM LED Driver with Pre-Charge FET, LED Open Detection and Display Data Memory Support 32-Multiplexing

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TLC5958
SLVSCE7A – MAY 2014 – REVISED SEPTEMBER 2014
TLC5958 48-Channel, 16-Bit ES-PWM LED Driver with Pre-Charge FET, LED Open
Detection and Display Data Memory Support 32-Multiplexing
1 Features
•1 48 Channels Constant Current Sink Output
• Sink Current Capability with Max BC/CC data:
– 25mA at 5VCC
– 20mA at 3.3VCC
• Global Brightness Control (BC) : 3-Bit (8 Step)
• Color Brightness Control (CC) for Each Color
Group:
9-Bit (512 Step), Three Groups
• Grayscale(GS) Control with Multiplexed Enhanced
Spectrum(ES) PWM: 16bit
• 48K bit Grayscale Data Memory Support 32-
multiplexing
• LED Power Supply Voltage Up To 10V
• Vcc = 3.0V to 5.5V
• Constant Current Accuracy
– Channel to Channel = ±1%(Typ), ±3%(Max)
– Device to Device = ±1%(Typ), ±2%(Max)
• Data Transfer Rate: 25MHz
• Gray Scale Clock: 33MHz
• LED Open Detection (LOD)
• Thermal Shut Down (TSD)
• I_REF Resistor Short Protection (ISP)
• Power-Save Mode (PSM) with high speed
recovery
• Delay Switching to Prevent Inrush Current
• Pre-charge FET to Avoid Ghosting Phenomenon
• Operating Temperature : –40°C to +85°C
2 Applications
• LED Video Displays with Multiplexing System
• LED Signboards with Multiplexing system
• High Refresh Rate & High density LED Panel
3 Description
The TLC5958 is a 48 channels constant-current sink
driver for multiplexing system with 1 to 32 duty ratio.
Each channel has an individually-adjustable, 65536-
step, pulse width modulation (PWM) grayscale (GS).
48K bit display memory is implemented to increase
the visual refresh rate and to decrease the GS data
writing frequency.
The output channels are grouped into three groups,
each group has 16 channels. Each group has a 512-
step color brightness control (CC) function. The
maximum current value of all 48 channels can be set
by 8-step global brightness control (BC) function. CC
and BC can be used to adjust the brightness
deviation between LED drivers. GS, CC, and BC data
are accessible via a serial interface port.
Send request via email for Application Note: Build
High Density, High Refresh Rate, Multiplexing LED
Panel with TLC5958.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TLC5958
VQFN (56)
8.00 mm × 8.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Typical Application Circuit (Multiple Daisy-Chained TLC5958s)
VLED
SW
COM n
COM n
VLED
SW
COM 1
VLED
SW
COM 0
X 48
COM 1
COM 0
Controller
DATA
SCLK
LAT
GCLK
FLAGS
READ
OUTR0
OUTB15
SIN
SCLK
LAT
TLC5958
IC1
GCLK
IREF
IREFGND
SOUT
VCC
Thermal
Pad
VCC
GND
GND
3
X 48
OUTR0
OUTB15
SIN
SCLK
TLC5958
LAT
ICn
GCLK
IREF
IREFGND
SOUT
VCC
Thermal
Pad
VCC
GND
GND
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.