JAJSF10C October   2018  – July 2024 LP5018 , LP5024

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 概要 (続き)
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 PWM Control for Each Channel
        1. 7.3.1.1 Independent Color Mixing Per RGB LED Module
        2. 7.3.1.2 Independent Intensity Control Per RGB LED Module
          1. 7.3.1.2.1 Intensity-Control Register Configuration
          2. 7.3.1.2.2 Logarithmic- or Linear-Scale Intensity Control
        3. 7.3.1.3 12-Bit, 29-kHz PWM Generator Per Channel
          1. 7.3.1.3.1 PWM Generator
        4. 7.3.1.4 PWM Phase-Shifting
      2. 7.3.2 LED Bank Control
      3. 7.3.3 Current Range Setting
      4. 7.3.4 Automatic Power-Save Mode
      5. 7.3.5 Protection Features
        1. 7.3.5.1 Thermal Shutdown
        2. 7.3.5.2 UVLO
    4. 7.4 Device Functional Modes
    5. 7.5 Programming
      1. 7.5.1 I2C Interface
        1. 7.5.1.1 Data Validity
        2. 7.5.1.2 Start and Stop Conditions
        3. 7.5.1.3 Transferring Data
        4. 7.5.1.4 I2C Slave Addressing
        5. 7.5.1.5 Control-Register Write Cycle
        6. 7.5.1.6 Control-Register Read Cycle
        7. 7.5.1.7 Auto-Increment Feature
    6. 7.6 Register Maps
      1. 7.6.1  DEVICE_CONFIG0 (Address = 0h) [reset = 0h]
      2. 7.6.2  DEVICE_CONFIG1 (Address = 1h) [reset = 3Ch]
      3. 7.6.3  LED_CONFIG0 (Address = 2h) [reset = 00h]
      4. 7.6.4  BANK_BRIGHTNESS (Address = 3h) [reset = FFh]
      5. 7.6.5  BANK_A_COLOR (Address = 4h) [reset = 00h]
      6. 7.6.6  BANK_B_COLOR (Address = 5h) [reset = 00h]
      7. 7.6.7  BANK_C_COLOR (Address = 6h) [reset = 00h]
      8. 7.6.8  LED0_BRIGHTNESS (Address = 7h) [reset = FFh]
      9. 7.6.9  LED1_BRIGHTNESS (Address = 8h) [reset = FFh]
      10. 7.6.10 LED2_BRIGHTNESS (Address = 9h) [reset = FFh]
      11. 7.6.11 LED3_BRIGHTNESS (Address = 0Ah) [reset = FFh]
      12. 7.6.12 LED4_BRIGHTNESS (Address = 0Bh) [reset = FFh]
      13. 7.6.13 LED5_BRIGHTNESS (Address = 0Ch) [reset = FFh]
      14. 7.6.14 LED6_BRIGHTNESS (Address = 0Dh) [reset = FFh]
      15. 7.6.15 LED7_BRIGHTNESS (Address = 0Eh) [reset = FFh]
      16. 7.6.16 OUT0_COLOR (Address = 0Fh) [reset = 00h]
      17. 7.6.17 OUT1_COLOR (Address = 10h) [reset = 00h]
      18. 7.6.18 OUT2_COLOR (Address = 11h) [reset = 00h]
      19. 7.6.19 OUT3_COLOR (Address = 12h) [reset = 00h]
      20. 7.6.20 OUT4_COLOR (Address = 13h) [reset = 00h]
      21. 7.6.21 OUT5_COLOR (Address = 14h) [reset = 00h]
      22. 7.6.22 OUT6_COLOR (Address = 15h) [reset = 00h]
      23. 7.6.23 OUT7_COLOR (Address = 16h) [reset = 00h]
      24. 7.6.24 OUT8_COLOR (Address = 17h) [reset = 00h]
      25. 7.6.25 OUT9_COLOR (Address = 18h) [reset = 00h]
      26. 7.6.26 OUT10_COLOR (Address = 19h) [reset = 00h]
      27. 7.6.27 OUT11_COLOR (Address = 1Ah) [reset = 00h]
      28. 7.6.28 OUT12_COLOR (Address = 1Bh) [reset = 00h]
      29. 7.6.29 OUT13_COLOR (Address = 1Ch) [reset = 00h]
      30. 7.6.30 OUT14_COLOR (Address = 1Dh) [reset = 00h]
      31. 7.6.31 OUT15_COLOR (Address = 1Eh) [reset = 00h]
      32. 7.6.32 OUT16_COLOR (Address = 1Fh) [reset = 00h]
      33. 7.6.33 OUT17_COLOR (Address = 20h) [reset = 00h]
      34. 7.6.34 OUT18_COLOR (Address = 21h) [reset = 00h]
      35. 7.6.35 OUT19_COLOR (Address = 22h) [reset = 00h]
      36. 7.6.36 OUT20_COLOR (Address = 23h) [reset = 00h]
      37. 7.6.37 OUT21_COLOR (Address = 24h) [reset = 00h]
      38. 7.6.38 OUT22_COLOR (Address = 25h) [reset = 00h]
      39. 7.6.39 OUT23_COLOR (Address = 26h) [reset = 00h]
      40. 7.6.40 RESET (Address = 27h) [reset = 00h]
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Examples
  10. 9 Device and Documentation Support
    1. 9.1 Related Links
    2. 9.2 ドキュメントの更新通知を受け取る方法
    3. 9.3 サポート・リソース
    4. 9.4 Trademarks
    5. 9.5 静電気放電に関する注意事項
    6. 9.6 用語集
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

4 概要 (続き)

LP50xx デバイスは、29kHz のスイッチング周波数、12 ビットの PWM 分解能で各 LED の出力を制御するので、スムーズな調光効果を達成でき、可聴周波数のノイズが排除されます。カラー ミキシングと輝度の制御レジスタを別々に制御できるため、ソフトウェアのコーディングが明快になります。フェードイン、フェードアウト型のブリージング効果を行う際、グローバルなR、G、Bバンクの制御により、マイクロコントローラの負荷が大幅に減少します。また、LP50xxデバイスにはPWM位相シフト機能も実装されており、LEDが同時にオンになるときの入力電力バジェットを低減するために役立ちます。

LP50xxデバイスには、自動パワーセービング モードが実装されており、非常に低い静止電流を実現しています。すべてのチャネルが30msの間オフのとき、デバイスの合計消費電力は10µAまで低下するため、LP50xxデバイスはバッテリ駆動の最終製品に適しています。