JAJSLS9 September   2024 BQ25773

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Device Comparison Table
  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 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 Typical Characteristics BQ2577X
  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 Sequence
      2. 7.3.2  MODE Pin Detection
      3. 7.3.3  REGN Regulator (REGN LDO)
      4. 7.3.4  Independent Comparator Function
      5. 7.3.5  Battery Charging Management
        1. 7.3.5.1 Autonomous Charging Cycle
        2. 7.3.5.2 Battery Charging Profile
        3. 7.3.5.3 Charging Termination
        4. 7.3.5.4 Charging Safety Timer
      6. 7.3.6  Temperature Regulation (TREG)
      7. 7.3.7  Vmin Active Protection (VAP) When Battery Only Mode
      8. 7.3.8  Two Level Battery Discharge Current Limit
      9. 7.3.9  Fast Role Swap Feature
      10. 7.3.10 CHRG_OK Indicator
      11. 7.3.11 Input and Charge Current Sensing
      12. 7.3.12 Input Current and Voltage Limit Setup
      13. 7.3.13 Battery Cell Configuration
      14. 7.3.14 Device HIZ State
      15. 7.3.15 USB On-The-Go (OTG)
      16. 7.3.16 Quasi Dual Phase Converter Operation
      17. 7.3.17 Continuous Conduction Mode (CCM)
      18. 7.3.18 Pulse Frequency Modulation (PFM)
      19. 7.3.19 Switching Frequency and Dithering Feature
      20. 7.3.20 Current and Power Monitor
        1. 7.3.20.1 High-Accuracy Current Sense Amplifier (IADPT and IBAT)
        2. 7.3.20.2 High-Accuracy Power Sense Amplifier (PSYS)
      21. 7.3.21 Input Source Dynamic Power Management
      22. 7.3.22 Integrated 16-Bit ADC for Monitoring
      23. 7.3.23 Input Current Optimizer (ICO)
      24. 7.3.24 Two-Level Adapter Current Limit (Peak Power Mode)
      25. 7.3.25 Processor Hot Indication
        1. 7.3.25.1 PROCHOT During Low Power Mode
        2. 7.3.25.2 PROCHOT Status
      26. 7.3.26 Device Protection
        1. 7.3.26.1  Watchdog Timer (WD)
        2. 7.3.26.2  Input Overvoltage Protection (ACOV)
        3. 7.3.26.3  Input Overcurrent Protection (ACOC)
        4. 7.3.26.4  System Overvoltage Protection (SYSOVP)
        5. 7.3.26.5  Battery Overvoltage Protection (BATOVP)
        6. 7.3.26.6  Battery Charge Overcurrent Protection (BATCOC)
        7. 7.3.26.7  Battery Discharge Overcurrent Protection (BATDOC)
        8. 7.3.26.8  BATFET Charge Current Clamp Protection under LDO Regulation Mode
        9. 7.3.26.9  Sleep Comparator Protection Between VBUS and ACP_A (SC_VBUSACP)
        10. 7.3.26.10 High Duty Buck Exit Comparator Protection (HDBCP)
        11. 7.3.26.11 REGN Power Good Protection (REGN_PG)
        12. 7.3.26.12 System Under Voltage Lockout (VSYS_UVP) and Hiccup Mode
        13. 7.3.26.13 OTG Mode Over Voltage Protection (OTG_OVP)
        14. 7.3.26.14 OTG Mode Under Voltage Protection (OTG_UVP)
        15. 7.3.26.15 Thermal Shutdown (TSHUT)
    4. 7.4 Device Functional Modes
      1. 7.4.1 Forward Mode
        1. 7.4.1.1 System Voltage Regulation with Narrow VDC Architecture
        2. 7.4.1.2 Battery Charging
      2. 7.4.2 USB On-The-Go Mode
      3. 7.4.3 Pass Through Mode (PTM)-Patented Technology
      4. 7.4.4 Learn Mode
    5. 7.5 Programming
      1. 7.5.1 I2C Serial Interface
        1. 7.5.1.1 Timing Diagrams
        2. 7.5.1.2 Data Validity
        3. 7.5.1.3 START and STOP Conditions
        4. 7.5.1.4 Byte Format
        5. 7.5.1.5 Acknowledge (ACK) and Not Acknowledge (NACK)
        6. 7.5.1.6 Target Address and Data Direction Bit
        7. 7.5.1.7 Single Read and Write
        8. 7.5.1.8 Multi-Read and Multi-Write
        9. 7.5.1.9 Write 2-Byte I2C Commands
    6. 7.6 BQ25773 Registers
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Input Snubber and Filter for Voltage Spike Damping
        2. 8.2.2.2 ACP-ACN Input Filter
        3. 8.2.2.3 Inductor Selection
        4. 8.2.2.4 Input Capacitor
        5. 8.2.2.5 Output Capacitor
        6. 8.2.2.6 Power MOSFETs Selection
  10. 9 Power Supply Recommendations
  11. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
      1. 10.2.1 Layout Example Reference Top View
  12. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 サード・パーティ製品に関する免責事項
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 ドキュメントの更新通知を受け取る方法
    4. 11.4 サポート・リソース
    5. 11.5 Trademarks
    6. 11.6 静電気放電に関する注意事項
    7. 11.7 用語集
  13. 12Revision History
  14. 13Mechanical, Packaging, and Orderable Information

6.7 Typical Characteristics BQ2577X

RAC = 10 mΩ, RSR = 5 mΩ, Inductance = 3.3 μH, CCM Frequency = 600 kHz
BQ25773 System Efficiency
VIN = 5 V CCM 600 kHz VOUT = System voltage
Figure 6-1 System Efficiency
BQ25773 System Efficiency
VIN = 20 V CCM 600 kHz VOUT = System voltage
Figure 6-3 System Efficiency
BQ25773 System Efficiency
VIN = 36 V CCM 600 kHz VOUT = System voltage
Figure 6-5 System Efficiency
BQ25773 Light Load System Efficiency
VIN = 15 V EN_OOA = 0b VOUT = System voltage
Figure 6-7 Light Load System Efficiency
BQ25773 Light Load System Efficiency
VIN = 28 V EN_OOA = 0b VOUT = System voltage
Figure 6-9 Light Load System Efficiency
BQ25773 OTG Efficiency
VOTG= 5 V CCM 600 kHz
Figure 6-11 OTG Efficiency
BQ25773 PTM Mode Heavy Load System Efficiency
VBAT = 8.4 V VOUT = VBUS
Figure 6-13 PTM Mode Heavy Load System Efficiency
BQ25773 Battery Charge Current Regulation Accuracy
VBAT = 14.8 V CCM 600 kHz ICHG set =0.256~16 A
Figure 6-15 Battery Charge Current Regulation Accuracy
BQ25773 Minimum System Voltage Regulation Accuracy
VBAT = 0.5 V CCM 600 kHz EN_OOA = 0b
Figure 6-17 Minimum System Voltage Regulation Accuracy
BQ25773 System Efficiency
VIN = 15V CCM 600 kHz VOUT = System voltage
Figure 6-2 System Efficiency
BQ25773 System Efficiency
VIN = 28 V CCM 600 kHz VOUT = System voltage
Figure 6-4 System Efficiency
BQ25773 Light Load System Efficiency
VIN = 5 V EN_OOA = 0b VOUT = System voltage
Figure 6-6 Light Load System Efficiency
BQ25773 Light Load System Efficiency
VIN = 20 V EN_OOA = 0b VOUT = System voltage
Figure 6-8 Light Load System Efficiency
BQ25773 Light Load System Efficiency
VIN = 36 V EN_OOA = 0b VOUT = System voltage
Figure 6-10 Light Load System Efficiency
BQ25773 PTM Mode Ligh Load System Efficiency
VBAT = 8.4 V VOUT = VBUS
Figure 6-12 PTM Mode Ligh Load System Efficiency
BQ25773 Battery Voltage Regulation Accuracy
ICHG = 1024 mA CCM 600 kHz
Figure 6-14 Battery Voltage Regulation Accuracy
BQ25773 Input Current Regulation Accuracy (IIN_DPM)
VBAT = 14.8 V CCM 600 kHz IINDPM set =0.4~8.2 A
Figure 6-16 Input Current Regulation Accuracy (IIN_DPM)