THL3514 Datasheet, PDF (1/16 Pages) THine Electronics, Inc. – The THL3514 is an LED driver with 24 channel constant

THL3514_Rev.1.01_E
THL3514
24-channel Constant Current LED Driver with LVDS Interface
DESCRIPTIONS
The THL3514 is an LED driver with 24 channel constant
current sink outputs. The constant current values for
three output groups are determined by external resistors.
The embedded oscillator and PWM controller
individually generates 256-step brightness set by the
dedicated registers for each channel.
The serial interface of 2-pair LVDS lines (clock and
data) features high-level noise tolerance, high-speed, and
long-distance transmission.
The LVDS allowing cascaded and multidrop connection
offers the maximum flexibility for designers to place and
connect LED drivers.
The simple and one-way communication protocol is
easily-controlled and requires less CPU resources.
APPLICATIONS
Amusement
LED Backlight
LED Display
Digital Signage
Illumination
FEATURES
< Driver part >
- Constant Current Output: 24 channels
- Output Sink Current: up to 40mA/ch
- Output voltage: up to 40V
- Individual Brightness Control: 256 steps
- Output disable/enable
< Serial interface part >
- 2-pair Serial LVDS Input or 3-wire Serial CMOS Input
up to 10Mbps
- Bridge Function Converting 3-wire Serial
CMOS Input to 2-pair Serial LVDS Output
- Repeater function of 2-pair Serial LVDS Input / Output
with Waveform and Timing Correction
- Device Address Selection up to 62 addresses
- General call to all devices
Protection Circuits
UVLO, Short Circuit Protection, Thermal Shutdown
Supply Voltage: 3.0~5.5V
Package: QFN 48-pin Exposed Pad
Protection Circuits
EU RoHS Compliant
Block Diagram
OUT0~OUT7 OUT8~OUT15 OUT16~OUT23
REXT0
REXT1
Constant
Current
Generator
Current Sink
Oscillator
Current Sink
Current Sink
PWM Controller
REXT2
A0~A5
SCL_INp
SCL_INn
SDA_INp
SDA_INn
MODE
LVDS Input
SCL
Registers
Address
Data
Input Logic
LVDS Output
SDA
Re-timing
SCK SCL
CSn SDA
SI
3-wire to 2-wire
conversion
SCL_OUTp
SCL_OUTn
SDA_OUTp
SDA_OUTn
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