THL6521_Rev.0.01_E THL6523_Rev.0.01_E Preliminary THL6521 / THL6523 1channel LED Driver Description Features THL6521 / THL6523 are a 1 channel LED driver. THL6521 / THL6523 have a built-in boost converter, since back light system can consist of 1 chip. Soft start / Over current protection / Under voltage lock out protection / Over voltage protection / Thermal shut down are built in. Mounted area is reducible by TSOP23-6. ・Input voltage range : 2.5V - 5.5V ・Boost converter Maximum output voltage : 38V Switching frequency range : 1MHz ・LED driver feedback Voltage THL6521 : 100mV THL6523 : 300mV ・PWM dimming control : 100Hz - 200kHz ・Protection Soft start Over current protection Under voltage lock out protection Over voltage protection Thermal shut down ・TSOT23-6 package Application ･Mobile phone display backlight ・Car Navigator display backlight ･Laptop / Netbook / Tablet PC display backlight Block Diagram Pin Configuration VIN LX 1 1 VCC GND 2 2 NC FB 3 3 PWM/EN LX VCC PWM/EN UVLO OVP Boost FB SS OSC GND Copyright© 2013 THine Electronics, Inc. All rights reserved. 1/5 THine Electronics, Inc. Preliminary THL6521_Rev.0.01_E THL6523_Rev.0.01_E Absolute Maximum Ratings Parameter Symbol VCC VH VL Pd Tj Tstg VCC voltage LX voltage FB / PWM/EN voltage Power description Junction temperature Storage temperature range Rating 6 43 6 0.4 -40 ～ +125 -55 ～ +150 Units V V V W ℃ ℃ Max 5.5 38 Units V V Recommended Operating Conditions Parameter Min 2.5 - VCC voltage LX voltage Typ - Pin Description Number Name 1 LX 2 3 GND FB 4 PWM/EN 5 6 NC VCC Function Boost converter switching output pin Ground Feedback input pin PWM dimming control input pin / Enable pin Non connection pin Input supply voltage pin Description This pin is switching output of boost converter. Ground of LED driver. LED current is set by the value of the external resistor. This pin is PWM dimming control and Enable. This pin is non connection pin. Please open. Power supply pin. Copyright© 2013 THine Electronics, Inc. All rights reserved. 2/5 THine Electronics, Inc. THL6521_Rev.0.01_E THL6523_Rev.0.01_E Electrical Characteristics Parameter Preliminary （at VCC＝3.3V , Ta=25℃, unless otherwise noted） Symbol Test Conditions Min Typ Max Units Input quiescent Current 1 Icc1 Vfb=0V - 1 2 mA Input quiescent Current 2 Icc2 Vfb=1.5V - 400 600 uA UVLO threshold voltage Vuvlo VCC rising - 2.2 - V UVLO hysteresis voltage Vuvloh - 100 - mV PWM/EN input high voltage Ven_h 1.4 - - V Ven_l - - 0.5 V Ien_leak - 1 - uA 0.1 - 200 kHz Vpwm_h - 20 - ms Fosc - 1 - MHz 90 - - % ms PWM/EN input low voltage PWM/EN sink current PWM/EN dimming frequency PWM/EN Low shoutdown delay time Boost converter switching frequency Maximum duty cycle Dmax Soft start time FB voltage Fpwm Duty=5%～100% Vfb=0V Tss THL6521 THL6523 Vfb FB input bias current Ifb LX ON-resistance Ron LX leakage current Ilx_leak Vfb=0.1V Vlx=10V - 5 - 90 100 110 285 300 315 - -300 - nA - 0.5 - Ω mV - 10 - uA Over voltage protection threshold Vovp 38 39 - V Over current threshold Iocp 1.2 1.5 - A Copyright© 2013 THine Electronics, Inc. All rights reserved. 3/5 THine Electronics, Inc. THL6521_Rev.0.01_E THL6523_Rev.0.01_E Preliminary Package Dimensions TSOP23-6 Copyright© 2013 THine Electronics, Inc. All rights reserved. 4/5 THine Electronics, Inc. THL6521_Rev.0.01_E THL6523_Rev.0.01_E Preliminary 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 copyright, 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. 9. The product or peripheral parts may be damaged by a surge in voltage over the absolute maximum ratings or malfunction, if pins of the product are shorted by such as foreign substance. The damageｓ may cause a smoking and ignition. Therefore, you are encouraged to implement safety measures by adding protection devices, such as fuses. THine Electronics, Inc. [email protected] Copyright© 2013 THine Electronics, Inc. All rights reserved. 5/5 THine Electronics, Inc.