ZHCSHV7B October   2018  – October 2018 LP5018 , LP5024

PRODUCTION DATA.  

  1. 特性
  2. 应用
  3. 说明
    1.     简化原理图
  4. 修订历史记录
  5. 说明 (续)
  6. Pin Configuration and Functions
    1.     Pin Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 PWM Control for Each Channel
        1. 8.3.1.1 Independent Color Mixing Per RGB LED Module
        2. 8.3.1.2 Independent Intensity Control Per RGB LED Module
          1. 8.3.1.2.1 Intensity-Control Register Configuration
          2. 8.3.1.2.2 Logarithmic- or Linear-Scale Intensity Control
        3. 8.3.1.3 12-Bit, 29-kHz PWM Generator Per Channel
          1. 8.3.1.3.1 PWM Generator
        4. 8.3.1.4 PWM Phase-Shifting
      2. 8.3.2 LED Bank Control
      3. 8.3.3 Current Range Setting
      4. 8.3.4 Automatic Power-Save Mode
      5. 8.3.5 Protection Features
        1. 8.3.5.1 Thermal Shutdown
        2. 8.3.5.2 UVLO
    4. 8.4 Device Functional Modes
    5. 8.5 Programming
      1. 8.5.1 I2C Interface
        1. 8.5.1.1 Data Validity
        2. 8.5.1.2 Start and Stop Conditions
        3. 8.5.1.3 Transferring Data
        4. 8.5.1.4 I2C Slave Addressing
        5. 8.5.1.5 Control-Register Write Cycle
        6. 8.5.1.6 Control-Register Read Cycle
        7. 8.5.1.7 Auto-Increment Feature
    6. 8.6 Register Maps
      1. 8.6.1  DEVICE_CONFIG0 (Address = 0h) [reset = 0h]
        1. Table 6. DEVICE_CONFIG0 Register Field Descriptions
      2. 8.6.2  DEVICE_CONFIG1 (Address = 1h) [reset = 3Ch]
        1. Table 7. DEVICE_CONFIG1 Register Field Descriptions
      3. 8.6.3  LED_CONFIG0 (Address = 2h) [reset = 00h]
        1. Table 8. LED_CONFIG0 Register Field Descriptions
      4. 8.6.4  BANK_BRIGHTNESS (Address = 3h) [reset = FFh]
        1. Table 9. BANK_BRIGHTNESS Register Field Descriptions
      5. 8.6.5  BANK_A_COLOR (Address = 4h) [reset = 00h]
        1. Table 10. BANK_A_COLOR Register Field Descriptions
      6. 8.6.6  BANK_B_COLOR (Address = 5h) [reset = 00h]
        1. Table 11. BANK_B_COLOR Register Field Descriptions
      7. 8.6.7  BANK_C_COLOR (Address = 6h) [reset = 00h]
        1. Table 12. BANK_C_COLOR Register Field Descriptions
      8. 8.6.8  LED0_BRIGHTNESS (Address = 7h) [reset = FFh]
        1. Table 13. LED0_BRIGHTNESS Register Field Descriptions
      9. 8.6.9  LED1_BRIGHTNESS (Address = 8h) [reset = FFh]
        1. Table 14. LED1_BRIGHTNESS Register Field Descriptions
      10. 8.6.10 LED2_BRIGHTNESS (Address = 9h) [reset = FFh]
        1. Table 15. LED2_BRIGHTNESS Register Field Descriptions
      11. 8.6.11 LED3_BRIGHTNESS (Address = 0Ah) [reset = FFh]
        1. Table 16. LED3_BRIGHTNESS Register Field Descriptions
      12. 8.6.12 LED4_BRIGHTNESS (Address = 0Bh) [reset = FFh]
        1. Table 17. LED4_BRIGHTNESS Register Field Descriptions
      13. 8.6.13 LED5_BRIGHTNESS (Address = 0Ch) [reset = FFh]
        1. Table 18. LED5_BRIGHTNESS Register Field Descriptions
      14. 8.6.14 LED6_BRIGHTNESS (Address = 0Dh) [reset = FFh]
        1. Table 19. LED6_BRIGHTNESS Register Field Descriptions
      15. 8.6.15 LED7_BRIGHTNESS (Address = 0Eh) [reset = FFh]
        1. Table 20. LED7_BRIGHTNESS Register Field Descriptions
      16. 8.6.16 OUT0_COLOR (Address = 0Fh) [reset = 00h]
        1. Table 21. OUT0_COLOR Register Field Descriptions
      17. 8.6.17 OUT1_COLOR (Address = 10h) [reset = 00h]
        1. Table 22. OUT1_COLOR Register Field Descriptions
      18. 8.6.18 OUT2_COLOR (Address = 11h) [reset = 00h]
        1. Table 23. OUT2_COLOR Register Field Descriptions
      19. 8.6.19 OUT3_COLOR (Address = 12h) [reset = 00h]
        1. Table 24. OUT3_COLOR Register Field Descriptions
      20. 8.6.20 OUT4_COLOR (Address = 13h) [reset = 00h]
        1. Table 25. OUT4_COLOR Register Field Descriptions
      21. 8.6.21 OUT5_COLOR (Address = 14h) [reset = 00h]
        1. Table 26. OUT5_COLOR Register Field Descriptions
      22. 8.6.22 OUT6_COLOR (Address = 15h) [reset = 00h]
        1. Table 27. OUT6_COLOR Register Field Descriptions
      23. 8.6.23 OUT7_COLOR (Address = 16h) [reset = 00h]
        1. Table 28. OUT7_COLOR Register Field Descriptions
      24. 8.6.24 OUT8_COLOR (Address = 17h) [reset = 00h]
        1. Table 29. OUT8_COLOR Register Field Descriptions
      25. 8.6.25 OUT9_COLOR (Address = 18h) [reset = 00h]
        1. Table 30. OUT9_COLOR Register Field Descriptions
      26. 8.6.26 OUT10_COLOR (Address = 19h) [reset = 00h]
        1. Table 31. OUT10_COLOR Register Field Descriptions
      27. 8.6.27 OUT11_COLOR (Address = 1Ah) [reset = 00h]
        1. Table 32. OUT11_COLOR Register Field Descriptions
      28. 8.6.28 OUT12_COLOR (Address = 1Bh) [reset = 00h]
        1. Table 33. OUT12_COLOR Register Field Descriptions
      29. 8.6.29 OUT13_COLOR (Address = 1Ch) [reset = 00h]
        1. Table 34. OUT13_COLOR Register Field Descriptions
      30. 8.6.30 OUT14_COLOR (Address = 1Dh) [reset = 00h]
        1. Table 35. OUT14_COLOR Register Field Descriptions
      31. 8.6.31 OUT15_COLOR (Address = 1Eh) [reset = 00h]
        1. Table 36. OUT15_COLOR Register Field Descriptions
      32. 8.6.32 OUT16_COLOR (Address = 1Fh) [reset = 00h]
        1. Table 37. OUT16_COLOR Register Field Descriptions
      33. 8.6.33 OUT17_COLOR (Address = 20h) [reset = 00h]
        1. Table 38. OUT17_COLOR Register Field Descriptions
      34. 8.6.34 OUT18_COLOR (Address = 21h) [reset = 00h]
        1. Table 39. OUT18_COLOR Register Field Descriptions
      35. 8.6.35 OUT19_COLOR (Address = 22h) [reset = 00h]
        1. Table 40. OUT19_COLOR Register Field Descriptions
      36. 8.6.36 OUT20_COLOR (Address = 23h) [reset = 00h]
        1. Table 41. OUT20_COLOR Register Field Descriptions
      37. 8.6.37 OUT21_COLOR (Address = 24h) [reset = 00h]
        1. Table 42. OUT21_COLOR Register Field Descriptions
      38. 8.6.38 OUT22_COLOR (Address = 25h) [reset = 00h]
        1. Table 43. OUT22_COLOR Register Field Descriptions
      39. 8.6.39 OUT23_COLOR (Address = 26h) [reset = 00h]
        1. Table 44. OUT23_COLOR Register Field Descriptions
      40. 8.6.40 RESET (Address = 27h) [reset = 00h]
        1. Table 45. OUT14_COLOR Register Field Descriptions
  9. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Examples
  12. 12器件和文档支持
    1. 12.1 相关链接
    2. 12.2 接收文档更新通知
    3. 12.3 社区资源
    4. 12.4 商标
    5. 12.5 静电放电警告
    6. 12.6 术语表
  13. 13机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

LED Bank Control

For most LED-animation effects, like blinking and breathing, all the RGB LEDs have the same lighting pattern. Instead of controlling the individual LED separately, which occupies the microcontroller resources heavily, the LP50xx device provides an easy coding approach, the LED bank control.

Each channel can be configured as either independent control or bank control through the LEDx_Bank_EN register. When LEDx_Bank_EN = 0 (default), the LED is controlled independently by the related color-mixing and intensity-control registers. When LEDx_Bank_EN = 1, the LP50xx device drives the LEDs in LED bank-control mode. The LED bank has its own independent PWM control scheme, which is the same structure as the PWM scheme of each channel. See PWM Control for Each Channel for more details. When a channel is configured in LED bank-control mode, the related color mixing and intensity control is governed by the bank control registers (BANK_A_COLOR, BANK_B_COLOR, BANK_C_COLOR, and BANK_BRIGHTNESS) regardless of the inputs on its own color-mixing and intensity-control registers.

LP5018 LP5024 Bank-Control.gifFigure 13. Bank PWM Control Scheme

Table 1. Bank Number and LED Number Assignment

OUT NUMBER BANK Number RGB LED MODULE NUMBER
OUT0 Bank A LED0
OUT1 Bank B
OUT2 Bank C
OUT3 Bank A LED1
OUT4 Bank B
OUT5 Bank C
OUT6 Bank A LED2
OUT7 Bank B
OUT8 Bank C
OUT9 Bank A LED3
OUT10 Bank B
OUT11 Bank C
OUT12 Bank A LED4
OUT13 Bank B
OUT14 Bank C
OUT15 Bank A LED5
OUT16 Bank B
OUT17 Bank C
OUT18 (LP5024 only) Bank A LED6
OUT19 (LP5024 only) Bank B
OUT20 (LP5024 only) Bank C
OUT21 (LP5024 only) Bank A LED7
OUT22 (LP5024 only) Bank B
OUT23 (LP5024 only) Bank C

With the bank control configuration, the LP50xx device enables users to achieve smooth and live LED effects globally with an ultrasimple software effort. Figure 14 shows an example using LED0 as an independent RGB indicator and others with group breathing effect.

LP5018 LP5024 Bank-Control-Example.gifFigure 14. Bank PWM Control Example