SLVSGZ4 june   2023 TPS6521905

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  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  System Control Thresholds
    6. 6.6  BUCK1 Converter
    7. 6.7  BUCK2, BUCK3 Converter
    8. 6.8  General Purpose LDOs (LDO1, LDO2)
    9. 6.9  General Purpose LDOs (LDO3, LDO4)
    10. 6.10 GPIOs and multi-function pins (EN/PB/VSENSE, nRSTOUT, nINT, GPO1, GPO2, GPIO, MODE/RESET, MODE/STBY, VSEL_SD/VSEL_DDR)
    11. 6.11 Voltage and Temperature Monitors
    12. 6.12 I2C Interface
    13. 6.13 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  Power-Up Sequencing
      2. 7.3.2  Power-Down Sequencing
      3. 7.3.3  Push Button and Enable Input (EN/PB/VSENSE)
      4. 7.3.4  Reset to SoC (nRSTOUT)
      5. 7.3.5  Buck Converters (Buck1, Buck2, and Buck3)
      6. 7.3.6  Linear Regulators (LDO1 through LDO4)
      7. 7.3.7  Interrupt Pin (nINT)
      8. 7.3.8  PWM/PFM and Low Power Modes (MODE/STBY)
      9. 7.3.9  PWM/PFM and Reset (MODE/RESET)
      10. 7.3.10 Voltage Select pin (VSEL_SD/VSEL_DDR)
      11. 7.3.11 General Purpose Inputs or Outputs (GPO1, GPO2, and GPIO)
      12. 7.3.12 I2C-Compatible Interface
        1. 7.3.12.1 Data Validity
        2. 7.3.12.2 Start and Stop Conditions
        3. 7.3.12.3 Transferring Data
    4. 7.4 Device Functional Modes
      1. 7.4.1 Modes of Operation
        1. 7.4.1.1 OFF State
        2. 7.4.1.2 INITIALIZE State
        3. 7.4.1.3 ACTIVE State
        4. 7.4.1.4 STBY State
        5. 7.4.1.5 Fault Handling
    5. 7.5 User Registers
    6. 7.6 Device Registers
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Typical Application Example
      2. 8.2.2 Design Requirements
      3. 8.2.3 Detailed Design Procedure
        1. 8.2.3.1 Buck1, Buck2, Buck3 Design Procedure
        2. 8.2.3.2 LDO1, LDO2 Design Procedure
        3. 8.2.3.3 LDO3, LDO4 Design Procedure
        4. 8.2.3.4 VSYS, VDD1P8
        5. 8.2.3.5 Digital Signals Design Procedure
    3. 8.3 Multi-PMIC Operation
    4. 8.4 NVM Programming
      1. 8.4.1 TPS6521905 default NVM settings
      2. 8.4.2 NVM programming in Initialize State
      3. 8.4.3 NVM Programming in Active State
    5. 8.5 Application Curves
    6. 8.6 Power Supply Recommendations
    7. 8.7 Layout
      1. 8.7.1 Layout Guidelines
      2. 8.7.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8.4.3 NVM Programming in Active State

It is recommended to re-program the NVM in Initialize state. However, programming can also be done in Active state. Programming in ACTIVE state poses some risk, as changes take effect immediately. The expected PMIC behavior and the effects at the system level must be evaluated before making changes like the I2C address, function of digital pins, polarity among others. NVM changes like the rails output voltages, UV monitoring, enable settings and MASK can be done in Active state.

Note: Programming in Active state does not require sending an I2C command (EN_OSC_DIY) to enable the internal oscillator for I2C communication. The reason is because I2c communication is enabled by default in Initialize state.