THAB0021_THL3503_Rev.1.00_E_Brief THL3503 16-channel Constant Current LED Driver with LVDS Interface DESCRIPTIONS FEATURES The THL3503 is an LED driver with 16 channel constant current sink outputs. The constant current values for three output groups are determined by external resistors. T h e e m b e d d e d o sc i l l a to r a n d P W M c o n t r o l l e r 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. < Driver part > - Constant Current Output: 16 channels - Output Sink Current: up to 40mA/ch - Output voltage: up to 40V - Individual Brightness Control: 256 steps - Group Brightness Control: 64 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 APPLICATIONS Amusement LED Backlight LED Display Digital Signage Illumination Protection Circuits UVLO, Short Circuit Protection, Thermal Shutdown Supply Voltage: 3.0~5.5V Package: QFN 40-pin Exposed Pad Block Diagram OUT5~OUT10 OUT11~OUT15 OUT0~OUT4 REXT0 REXT1 Current Sink Constant Current Generator Current Sink Oscillator Current Sink PWM Controller REXT2 Registers Address A0~A5 Data Input Logic LVDS Input LVDS Output SCL_INp SCL SCL_OUTp SCL_INn SCL_OUTn SDA_INp SDA SDA_INn SDA_OUTp Re-timing SDA_OUTn SCK SCL CSn SDA SI MODE 3-wire to 2-wire conversion Copyright©2012 THine Electronics, Inc. 1 THine Electronics, Inc. THAB0021_THL3503_Rev.1.00_E_Brief Notices and Requests 1. The product specifications described in this material are subject to change without prior notice. 2. The circuit diagrams described in this material are examples of the application which may not always apply to the customer’s design. We are not responsible for possible errors and omissions in this material. Please note if errors or omissions should be found in this material, we may not be able to correct them immediately. 3. This material contains our copy right, know-how or other proprietary. Copying or disclosing to third parties the contents of this material without our prior permission is prohibited. 4. Note that if infringement of any third party's industrial ownership should occur by using this product, we will be exempted from the responsibility unless it directly relates to the production process or functions of the product. 5. This product is presumed to be used for general electric equipment, not for the applications which require very high reliability (including medical equipment directly concerning people's life, aerospace equipment, or nuclear control equipment). Also, when using this product for the equipment concerned with the control and safety of the transportation means, the traffic signal equipment, or various Types of safety equipment, please do it after applying appropriate measures to the product. 6. Despite our utmost efforts to improve the quality and reliability of the product, faults will occur with a certain small probability, which is inevitable to a semi-conductor product. Therefore, you are encouraged to have sufficiently redundant or error preventive design applied to the use of the product so as not to have our product cause any social or public damage. 7. Please note that this product is not designed to be radiation-proof. 8. Customers are asked, if required, to judge by themselves if this product falls under the category of strategic goods under the Foreign Exchange and Foreign Trade Control Law. THine Electronics, Inc. E-mail: email@example.com Copyright©2012 THine Electronics, Inc. 2 THine Electronics, Inc.
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