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Linsn LXY28161 User Manual

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Summary of Contents for Linsn LXY28161

  • Page 1 ’ ’ ’ ’ JULY 2008 V1.0 Pay attention to the last page...

  • Page 2: Table Of Contents

    ’ ’ CONTENTS Product Description.........................3 Features ..........................3 Applied field ........................3 Basic Structure Description....................3 LXY28161 Specification......................3 Block Diagram and Pin Configuration................3 Maximum Rating ......................5 Electrical Characteristics (V =5.0V) ................6 ＝5V） ................7 Switching Characteristics（V Test Circuit for Switching Characteristics ................8 Timing Waveform......................9 2.6.1...

  • Page 3: Product Description

    LXY28161 mainly includes serial-data input, Wise Pulse Width Modulation, constant current controlling circuit, constant current output. 2 LXY28161 Specification 2.1 Block Diagram and Pin Configuration LXY28161 applies SOP－24 and TSSOP-24 in package outline, Block Diagram and Pin Configuration are as following diagrams:...
  • Page 4 ’ ’ Block Diagram Pin Configuration...

  • Page 5: Maximum Rating

    ’ ’ Pin Name Pin No. Type Function Power Ground terminal for control logic and current sink Schmitt trigger Serial-data input to the shift input register Schmitt trigger Clock input terminal for data input shift on rising edge Schmitt trigger Data strobe terminal and input controlling command with DCLK...

  • Page 6: Electrical Characteristics

    ’ ’ 2.3 Electrical Characteristics (V =5.0V) Characteristics Condition Min. Typ. Max. Unit Supply Voltage Sustaining Voltage OUT0 ~ OUT15 VDD+0.4 at OUT Ports Refer to “Test Circuit for Electrical Characteristics” Output Current -6.0 ”H” level Ta=-40~85ºC 0.7*VDD Input Voltage ”L”...

  • Page 7: Switching Characteristics（V

    ’ ’ ＝5V） 2.4 Switching Characteristics（V Characteristics Symbol Condition Min. Typ. Unit SDI - DCLK↑ Setup Time – LE↑ DCLK↑ – LE↓ DCLK↑ DCLK↑ - SDI Hold Time DCLK↑ - LE↓ VDD=5.0V VIH=VDD VIL=GND DCLK -SDO (adjustable) DCLK output to the Propagation receiver-end SDI of next Delay Time...

  • Page 8: Test Circuit For Switching Characteristics

    ’ ’ 2.5 Test Circuit for Switching Characteristics...

  • Page 9: Timing Waveform

    ’ ’ 2.6 Timing Waveform 2.6.1 Serial-Port Timing Waveform 2.6.2 Output-Current Channel Timing Waveform...

  • Page 10: Constant Current

    ={[(Tj–Ta)/Rth(j-a)]–(I )}/ (DutyxV The maximum power dissipation, PD(max)=(Tj–Ta)/Rth(j-a), decreases as the ambient temperature increases. So the LXY28161 must work in Safe Operation Area. 2.11 Usage of Thermal Pad The PCB area L2xW2 is 4 times of the IC’s area L1xW1.

  • Page 11: Thermal Protection Function

    25% current. 2.13 LED Supply Voltage LXY28161 are designed to operate with VDS ranging from 0.4V to 0.8V (depending on IOUT=5 ～ 60mA), considering the package power dissipating limits. VDS may be higher enough to make when VLED＝5V，...

  • Page 12: Equivalent Circuits Of Inputs And Outputs

    ’ ’ 2.15 Equivalent Circuits of Inputs and Outputs Equivalent circuits of Inputs and Outputs 3 Package Outline LXY2816 applies SOP－24 and TSSOP-24 package outline: SOP-24 Outline Drawing...
  • Page 13 ’ ’ SSOP-24 Outline Drawing...

  • Page 14: Attention

    ’ ’ 4. Attention 4.1 The Rt value should satisfy: Rt < ( Rf / N /9), besides, set the value as small as possible. Otherwise, there will be current difference between ICs, which will effect the color uniformity.
  • Page 15 ’ ’ 4.2 In the Line-output, before connecting the GND, add a zener diode. The voltage of the zener diode is between 3.0V and 3.6V. Test and choose one that suit most. In out test, 3.3V is good. 4.3 For Electronic capacitors, please use Taiwan Lelon’s RXZ series high frequency capacitors, or some other brand which is similar in functions with the follow specifications: http://www.lelon.com.tw/index.php?fn=search2&keyword=rxz...
  • Page 16 ’ ’ SHENZHEN LINGXINYU SCIENCE AND TECHNOLOGY CO., LTD SHENZHEN LINGXINYU SCIENCE AND TECHNOLOGY CO., LTD...

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