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

12 器件和文档支持

12.1 器件支持

12.1.1 Third-Party Products Disclaimer

TI'S PUBLICATION OF INFORMATION REGARDING THIRD-PARTY PRODUCTS OR SERVICES DOES NOT CONSTITUTE AN ENDORSEMENT REGARDING THE SUITABILITY OF SUCH PRODUCTS OR SERVICES OR A WARRANTY, REPRESENTATION OR ENDORSEMENT OF SUCH PRODUCTS OR SERVICES, EITHER ALONE OR IN COMBINATION WITH ANY TI PRODUCT OR SERVICE.

12.2 接收文档更新通知

如需接收文档更新通知，请访问 www.ti.com.cn 网站上的器件产品文件夹。点击右上角的提醒我 (Alert me) 注册后，即可每周定期收到已更改的产品信息。有关更改的详细信息，请查阅已修订文档中包含的修订历史记录。

12.3 社区资源

The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use.

    TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers.
    Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and contact information for technical support.

12.4 商标

E2E is a trademark of Texas Instruments.

All other trademarks are the property of their respective owners.

12.5 静电放电警告

esds-image

这些装置包含有限的内置 ESD 保护。 存储或装卸时，应将导线一起截短或将装置放置于导电泡棉中，以防止 MOS 门极遭受静电损伤。

12.6 Glossary

SLYZ022 — TI Glossary.

This glossary lists and explains terms, acronyms, and definitions.