ZHCSDK5B September   2014  – January 2017 TPS68470

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 修订历史记录
  5. 5 说明 （续）
  6. 6 Pin Configuration and Functions
  7. 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 - Data Transmission
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Power-Up Sequence and Modes
      2. 8.3.2  Clock Generation
        1. 8.3.2.1 Crystal Oscillator
        2. 8.3.2.2 Phase Locked Loop (PLL)
        3. 8.3.2.3 Spread Spectrum Modulator
        4. 8.3.2.4 Clock Drivers
      3. 8.3.3  GPIO and Interrupt Generation
        1. 8.3.3.1 I2C Daisy Chain
        2. 8.3.3.2 Programmable Interrupt Trigger
        3. 8.3.3.3 Internal Interrupt Signals
      4. 8.3.4  Sensor GPO Signals
      5. 8.3.5  Power-Up and Software Reset
      6. 8.3.6  Core Buck
        1. 8.3.6.1 Buck Converter Switching Frequency
        2. 8.3.6.2 Buck Converter Internal Current Limit and Short Detection
      7. 8.3.7  Low Dropout Voltage Regulators (LDOs)
        1. 8.3.7.1 LDO Output Capacitor Requirements
        2. 8.3.7.2 LDO Internal Current Limit and Short Detection
        3. 8.3.7.3 Dropout Voltage
      8. 8.3.8  WLED Boost Converter and WLED Drivers
        1. 8.3.8.1 WLED Driver Operation
        2. 8.3.8.2 WLED Modes
          1. 8.3.8.2.1 FLASH: MODE[1:0] = '00''
          2. 8.3.8.2.2 TORCH: MODE[1:0] = '01''
          3. 8.3.8.2.3 RED-EYE REDUCTION: MODE[1:0] = '10''
          4. 8.3.8.2.4 FOCUS ASSIST: MODE[1:0] = '11''
        3. 8.3.8.3 WLED Trigger Options
          1. 8.3.8.3.1 Level-Sensitive Flash Trigger (TRIG = 0)
            1. 8.3.8.3.1.1 Edge Trigger Flash (TRIG = 1)
        4. 8.3.8.4 Blanking (Tx-Mask) for Instantaneous Flash-Current Reduction
        5. 8.3.8.5 Voltage Mode
      9. 8.3.9  Indicator LED Operation
        1. 8.3.9.1 Retriggerable Pulse Extender
      10. 8.3.10 Safe Operation and Protection Features
        1. 8.3.10.1 LED Temperature Monitoring (Finger-Burn Protection)
        2. 8.3.10.2 LED Failure Modes (Open/Short Detection) and Overvoltage Protection
        3. 8.3.10.3 WLED Open Circuit Detection/Over Voltage Protection
        4. 8.3.10.4 LED Current Ramp-Up/Down
        5. 8.3.10.5 Short Circuit Protection
        6. 8.3.10.6 Hot Die Detection and Thermal Shutdown
      11. 8.3.11 WLED Boost Inductor Selection
      12. 8.3.12 I2C Bus Operation
        1. 8.3.12.1 Single Write to a Defined Location
        2. 8.3.12.2 Single Read From a Defined Location and Current Location
        3. 8.3.12.3 Sequential Read and Write
      13. 8.3.13 Subaddress Definition
        1. 8.3.13.1 I2C Device Address, Start and Stop Condition
    4. 8.4 Device Functional Modes
      1. 8.4.1 Operation with a Single Input Power Rail
      2. 8.4.2 Sequencing the Input Power Rails
    5. 8.5 Register Map
      1. 8.5.1  GSTAT Register (address = 0x01) [reset = 00000000]
      2. 8.5.2  VRSTAT Register (address = 0x02) [reset = -]
      3. 8.5.3  VRSHORT Register (address = 0x03) [reset = 00000000]
      4. 8.5.4  INTMASK Register (address = 0x04) [reset = 00000000]
      5. 8.5.5  VCOSPEED Register (address = 0x05) [reset = 00000000]
      6. 8.5.6  POSTDIV2 Register (address = 0x06) [reset = 00000000]
      7. 8.5.7  BOOSTDIV Register (address = 0x07) [reset = 00000000]
      8. 8.5.8  BUCKDIV Register (address = 0x08) [reset = 00000000]
      9. 8.5.9  PLLSWR Register (address = 0x09) [reset = 00000000]
      10. 8.5.10 XTALDIV Register (address = 0x0A) [reset = 00000000]
      11. 8.5.11 PLLDIV Register (address = 0x0B) [reset = 00000000]
      12. 8.5.12 POSTDIV Register (address = 0x0C) [reset = 00000000]
      13. 8.5.13 PLLCTL Register (address = 0x0D) [reset = 10000000]
      14. 8.5.14 PLLCTL2 Register (address = 0x0E) [reset = 00000000]
      15. 8.5.15 CLKCFG1 Register (address = 0x0F) [reset = 00000000]
      16. 8.5.16 CLKCFG2 Register (address = 0x10) [reset = 00000000]
      17. 8.5.17 GPCTL0A Register (address = 0x14) [reset = 00000001]
      18. 8.5.18 GPCTL0B Register (address = 0x15) [reset = 00001000]
      19. 8.5.19 GPCTL1A Register (address = 0x16) [reset = 00000001]
      20. 8.5.20 GPCTL1B Register (address = 0x17) [reset = 00001000]
      21. 8.5.21 GPCTL2A Register (address = 0x18) [reset = 00000001]
      22. 8.5.22 GPCTL2B Register (address = 0x19) [reset = 00001000]
      23. 8.5.23 GPCTL3A Register (address = 0x1A) [reset = 00000001]
      24. 8.5.24 GPCTL3B Register (address = 0x1B) [reset = 00001000]
      25. 8.5.25 GPCTL4A Register (address = 0x1C) [reset = 00000001]
      26. 8.5.26 GPCTL4B Register (address = 0x1D) [reset = 00001000]
      27. 8.5.27 GPCTL5A Register (address = 0x1E) [reset = 00000001]
      28. 8.5.28 GPCTL5B Register (address = 0x1F) [reset = 00001000]
      29. 8.5.29 GPCTL6A Register (address = 0x20) [reset = 00000001]
      30. 8.5.30 GPCTL6B Register (address = 0x21) [reset = 00001000]
      31. 8.5.31 SGPO Register (address = 0x22) [reset = 00000000]
      32. 8.5.32 PITCTL Register (address = 0x23) [reset = 00000000]
      33. 8.5.33 WAKECFG Register (address = 0x24) [reset = 00000000]
      34. 8.5.34 IOWAKESTAT Register (address = 0x25) [reset = 00000000]
      35. 8.5.35 GPDI Register (address = 0x26) [reset = 00000000]
      36. 8.5.36 GPDO Register (address = 0x27) [reset = 00000000]
      37. 8.5.37 ILEDCTL Register (address = 0x28) [reset = 00000000]
      38. 8.5.38 WLEDSTAT Register (address = 0x29) [reset = 00000000]
      39. 8.5.39 VWLEDILIM Register (address = 0x2A) [reset = 00001010]
      40. 8.5.40 VWLEDVAL Register (address = 0x2B) [reset = 00000000]
      41. 8.5.41 WLEDMAXRER Register (address = 0x2C) [reset = 00000000]
      42. 8.5.42 WLEDMAXT Register (address = 0x2D) [reset = 00000000]
      43. 8.5.43 WLEDMAXAF Register (address = 0x2E) [reset = 00000000]
      44. 8.5.44 WLEDMAXF Register (address = 0x2F) [reset = 00000000]
      45. 8.5.45 WLEDTO Register (address = 0x30) [reset = 00000000]
      46. 8.5.46 VWLEDCTL Register (address = 0x31) [reset = 00111000]
      47. 8.5.47 WLEDTIMER_MSB Register (address = 0x32) [reset = 00000000]
      48. 8.5.48 WLEDTIMER_LSB Register (address = 0x33) [reset = 00000000]
      49. 8.5.49 WLEDC1 Register (address = 0x34) [reset = 00000000]
      50. 8.5.50 WLEDC2 Register (address = 0x35) [reset = 00000000]
      51. 8.5.51 WLEDCTL Register (address = 0x36) [reset = 00000000]
      52. 8.5.52 VCMVAL Register (address = 0x3C) [reset = 00000000]
      53. 8.5.53 VAUX1VAL Register (address = 0x3D) [reset = 00000000]
      54. 8.5.54 VAUX2VAL Register (address = 0x3E) [reset = 00000000]
      55. 8.5.55 VIOVAL Register (address = 0x3F) [reset = 00110100]
      56. 8.5.56 VSIOVAL Register (address = 0x40) [reset = 00110100]
      57. 8.5.57 VAVAL Register (address = 0x41) [reset = 00000000]
      58. 8.5.58 VDVAL Register (address = 0x42) [reset = 00000000]
      59. 8.5.59 S_I2C_CTL Register (address = 0x43) [reset = 00000000]
      60. 8.5.60 VCMCTL Register (address = 0x44) [reset = 00000000]
      61. 8.5.61 VAUX1CTL Register (address = 0x45) [reset = 00000000]
      62. 8.5.62 VAUX2CTL Register (address = 0x46) [reset = 00000000]
      63. 8.5.63 VACTL Register (address = 0x47) [reset = 00000000]
      64. 8.5.64 VDCTL Register (address = 0x48) [reset = 00000100]
      65. 8.5.65 RESET Register (address = 0x50) [reset = N/A]
      66. 8.5.66 REVID Register (address = 0xFF) [reset = 00100000]
  9. 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
        1. 9.2.2.1 Core Buck Design
          1. 9.2.2.1.1 Inductor Selection
          2. 9.2.2.1.2 Output Capacitor
          3. 9.2.2.1.3 Input Capacitor
        2. 9.2.2.2 WLED Boost Design
          1. 9.2.2.2.1 Inductor Selection
          2. 9.2.2.2.2 Output Capacitor
          3. 9.2.2.2.3 Input Capacitor
        3. 9.2.2.3 LDOs Capacitor Selection
        4. 9.2.2.4 LED Selection
        5. 9.2.2.5 Recommended External Components
      3. 9.2.3 Application Performance Graphs
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12器件和文档支持
    1. 12.1 器件支持
      1. 12.1.1 Third-Party Products Disclaimer
    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 Glossary
  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

1 特性

  • 高效降压转换器
    • 输出电流高达 500mA
    • 输出电压可选范围：0.9V 至 1.95V
  • 双闪存发光二极管 (LED) 驱动器
    • 高效升压转换器
      • 基于 LED 基准电压 (Vf) 的自适应输出电压调节
    • 低侧 LED 电流驱动器
      • 两个 1A 电流驱动器
      • LED 温度监视
      • 开路/短路 LED 检测/保护
      • 受控 LED 电流斜升/斜降
  • 传感器模拟电源的线性稳压器
    • 输出电压可编程范围是 0.875V 到 3.1V（17.8mV 步长）
    • 输出电流高达 200mA
  • IO 电源的线性稳压器
    • 输出电压可编程范围是 0.875V 到 3.1V（17.8mV 步长）
    • 输出电流高达 50mA
  • VCM（音圈电机）驱动器电源的线性稳压器
    • 输出电压可编程范围是 0.875V 到 3.1V（17.8mV 步长）
    • 输出电流高达 500mA
  • 辅助电源的线性稳压器
    • 输出电压可编程范围是 0.875V 到 3.1V（17.8mV 步长）
    • 输出电流高达 150mA
  • 辅助电源的线性稳压器
    • 输出电压可编程范围是 0.875V 到 3.1V（17.8mV 步长）
    • 输出电流高达 50mA
  • 传感器 IO 电源的线性稳压器
    • 输出电压可编程范围是 0.875V 到 3.1V（17.8mV 步长）
    • 输出电流高达 150mA
  • 时钟发生
    • 可编程锁相环 (PLL)
    • 晶振
  • I2C 接口
  • 7 个通用输入输出 (GPIO)
  • 系统复位
  • 工作温度范围：0°C 至 85°C
  • 封装厚度 0.625mm 的芯片级球状引脚栅格阵列 (DSBGA)

2 应用

  • 可拆卸式超级本
  • 平板电脑
  • 智能手机
  • 紧凑型摄像机模块 (CCM)

3 说明

TPS68470 器件是高级电源管理单元，可为紧凑型摄像机模块 (CCM) 供电、为图像传感器生成时钟、驱动闪存的双 LED 并集成两个用于通用指示器的 LED 驱动器。TPS68470 能够生成 CCM 中所需的全部电源轨。

CORE 电压稳压器是目前最先进的降压转换器，可用于图像传感器数字电源。线性稳压器 (LDO) (LDO_ANA) 可用于图像传感器模拟电源。

TPS68470 还具有一个高效的升压转换器，可支持两个 1A LED 闪光灯驱动器。并且可通过低侧稳压电流源来控制 LED 电流。

器件信息(1)

器件型号 封装 封装尺寸（标称值）
TPS68470 DSBGA (56) 3.325mm x 2.930mm
  1. 要了解所有可用封装，请见数据表末尾的可订购产品附录。

应用图

TPS68470 Sys_Blk.gif

4 修订历史记录

Changes from A Revision (March 2015) to B Revision

  • Changed LDO_AUX2 Max output current from 50 mA to 80 mA Go

Changes from * Revision (September 2014) to A Revision

  • Added Storage temperature to Absolute Maximum RatingsGo
  • Changed Handling Ratings to ESD Ratings Go
  • Deleted Storage temperature from ESD Ratings Go