ZHCSHC3B january   2018  – june 2023 TPS61280D , TPS61280E , TPS61281D

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 说明（续）
  7. 6 Device Comparison Table
  8. 7 Pin Configuration and Functions
  9. 8 Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 I2C Interface Timing Characteristics #GUID-BD85FD7C-B9AF-4F5D-9DFF-CD61365A592A/SLVS5401494
    7. 8.7 I2C Timing Diagrams
    8. 8.8 Typical Characteristics
  10. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Voltage Scaling Management (VSEL)
      2. 9.3.2 Spread Spectrum, PWM Frequency Dithering
    4. 9.4 Device Functional Modes
      1. 9.4.1 Power-Save Mode
      2. 9.4.2 Pass-Through Mode
      3. 9.4.3 Mode Selection
      4. 9.4.4 Current Limit Operation
      5. 9.4.5 Start-Up and Shutdown Mode
      6. 9.4.6 Undervoltage Lockout
      7. 9.4.7 Thermal Shutdown
      8. 9.4.8 Fault State and Power-Good
    5. 9.5 Programming
      1. 9.5.1 Serial Interface Description (TPS61280D/E)
      2. 9.5.2 Standard-, Fast-, Fast-Mode Plus Protocol
      3. 9.5.3 HS-Mode Protocol
      4. 9.5.4 TPS6128xD/E I2C Update Sequence
    6. 9.6 Register Maps
      1. 9.6.1  Slave Address Byte
      2. 9.6.2  Register Address Byte
      3. 9.6.3  I2C Registers, E2PROM, Write Protect
      4. 9.6.4  E2PROM Configuration Parameters
      5. 9.6.5  CONFIG Register [reset = 0x01]
      6. 9.6.6  VOUTFLOORSET Register [reset = 0x02]
      7. 9.6.7  VOUTROOFSET Register [reset = 0x03]
      8. 9.6.8  ILIMSET Register [reset = 0x04]
      9. 9.6.9  Status Register [reset = 0x05]
      10. 9.6.10 E2PROMCTRL Register [reset = 0xFF]
  11. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 TPS61281D with 2.5V-4.35 VIN, 1500 mA Output Current (TPS61280D with default I2C Configuration)
        1. 10.2.1.1 Design Requirement
        2. 10.2.1.2 Detailed Design Parameters
          1. 10.2.1.2.1 Inductor Selection
          2. 10.2.1.2.2 Output Capacitor
          3. 10.2.1.2.3 Input Capacitor
          4. 10.2.1.2.4 Checking Loop Stability
        3. 10.2.1.3 Application Performance Curves
      2. 10.2.2 TPS61282D with 2.5V-4.35 VIN, 2000 mA Output Current (TPS61280D with I2C Programmable)
        1. 10.2.2.1 Design Requirements
        2. 10.2.2.2 Detailed Design Procedures
        3. 10.2.2.3 Application Performance Curves
  12. 11Power Supply Recommendations
  13. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
    3. 12.3 Thermal Information
  14. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 第三方产品免责声明
    2. 13.2 接收文档更新通知
    3. 13.3 支持资源
    4. 13.4 Trademarks
    5. 13.5 静电放电警告
    6. 13.6 术语表
  15. 14Mechanical, Packaging, and Orderable Information
    1. 14.1 Package Summary

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

8.6 I2C Interface Timing Characteristics(1)

PARAMETERTEST CONDITIONSMINMAXUNIT
f(SCL)SCL Clock FrequencyStandard mode100kHz
Fast mode400kHz
Fast mode plus1MHz
High-speed mode (write operation), CB – 100 pF max3.4MHz
High-speed mode (read operation), CB – 100 pF max3.4MHz
High-speed mode (write operation), CB – 400 pF max1.7MHz
High-speed mode (read operation), CB – 400 pF max1.7MHz
tBUFBus Free Time Between a STOP and START ConditionStandard mode4.7μs
Fast mode1.3μs
Fast mode plus0.5μs
tHD, tSTAHold Time (Repeated) START
Condition		Standard mode4μs
Fast mode600ns
Fast mode plus260ns
High-speed mode160ns
tLOWLOW Period of the SCL ClockStandard mode4.7μs
Fast mode1.3μs
Fast mode plus0.5μs
High-speed mode, CB – 100 pF max160ns
High-speed mode, CB – 400 pF max320ns
tHIGHHIGH Period of the SCL ClockStandard mode4μs
Fast mode600ns
Fast mode plus260ns
High-speed mode, CB – 100 pF max60ns
High-speed mode, CB – 400 pF max120ns
tSU, tSTASetup Time for a Repeated START ConditionStandard mode4.7μs
Fast mode600ns
Fast mode plus260ns
High-speed mode160ns
tSU, tDATData Setup TimeStandard mode250ns
Fast mode100ns
Fast mode plus50ns
High-speed mode10ns
tHD, tDATData Hold TimeStandard mode03.45μs
Fast mode00.9μs
Fast mode plus0μs
High-speed mode, CB – 100 pF max070ns
High-speed mode, CB – 400 pF max0150ns
tRCLRise Time of SCL SignalStandard mode1000ns
Fast mode20 + 0.1 CB300ns
Fast mode plus120ns
High-speed mode, CB – 100 pF max1040ns
High-speed mode, CB – 400 pF max2080ns
tRCL1Rise Time of SCL Signal After a Repeated START Condition and After an Acknowledge BITStandard mode20 + 0.1 CB1000ns
Fast mode20 + 0.1 CB300ns
Fast mode plus120ns
High-speed mode, CB – 100 pF max1080ns
High-speed mode, CB – 400 pF max20160ns
tFCLFall Time of SCL SignalStandard mode20 + 0.1 CB300ns
Fast mode300ns
Fast mode plus120ns
High-speed mode, CB – 100 pF max1040ns
High-speed mode, CB – 400 pF max2080ns
tRDARise Time of SDA SignalStandard mode1000ns
Fast mode20 + 0.1 CB300ns
Fast mode plus120ns
High-speed mode, CB – 100 pF max1080ns
High-speed mode, CB – 400 pF max20160ns
tFDAFall Time of SDA SignalStandard mode300ns
Fast mode20 + 0.1 CB300ns
Fast mode plus120ns
High-speed mode, CB – 100 pF max1080ns
High-speed mode, CB – 400 pF max20160ns
tSU, tSTOSetup Time of STOP ConditionStandard mode4μs
Fast mode600ns
Fast mode plus260ns
High-Speed mode160ns
CBCapacitive Load for SDA and SCLStandard mode400pF
Fast mode400pF
Fast mode plus550pF
High-Speed mode400pF
(1) Specified by design. Not tested in production.