SLUSCH6B March   2016  – March 2017

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (Continued)
  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
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Functional Block Diagram
    2. 8.2 Feature Description
      1. 8.2.1  Device Power-On-Reset (POR)
      2. 8.2.2  Device Power Up from Battery without Input Source
      3. 8.2.3  Device Power Up from Input Source
        1. 8.2.3.1 Power Up REGN Regulation (LDO)
        2. 8.2.3.2 Poor Source Qualification
        3. 8.2.3.3 Input Source Type Detection
          1. 8.2.3.3.1 PSEL Pin Sets Input Current Limit
          2. 8.2.3.3.2 Force Input Current Limit Detection
        4. 8.2.3.4 Input Voltage Limit Threshold Setting (VINDPM Threshold)
        5. 8.2.3.5 Converter Power-Up
      4. 8.2.4  Power Path Management
        1. 8.2.4.1 Dynamic Power Management
      5. 8.2.5  Battery Charging Management
        1. 8.2.5.1 Autonomous Charging Cycle
        2. 8.2.5.2 Battery Charging Profile
        3. 8.2.5.3 Charging Termination
        4. 8.2.5.4 Charging Safety Timer
      6. 8.2.6  Battery Monitor
      7. 8.2.7  Status Outputs (PG, STAT, and INT)
        1. 8.2.7.1 Power Good Indicator (PG)
        2. 8.2.7.2 Charging Status Indicator (STAT)
        3. 8.2.7.3 Interrupt to Host (INT)
      8. 8.2.8  Thermal Regulation and Thermal Shutdown
        1. 8.2.8.1 Thermal Protection in Buck Mode
      9. 8.2.9  Voltage and Current Monitoring in Buck
        1. 8.2.9.1 Voltage and Current Monitoring in Buck Mode
          1. 8.2.9.1.1 Input Overvoltage (ACOV)
          2. 8.2.9.1.2 System Overvoltage Protection (SYSOVP)
      10. 8.2.10 Battery Protection
        1. 8.2.10.1 Battery Overvoltage Protection (BATOVP)
        2. 8.2.10.2 Battery Over-Discharge Protection
      11. 8.2.11 Serial Interface
        1. 8.2.11.1 Data Validity
        2. 8.2.11.2 START and STOP Conditions
        3. 8.2.11.3 Byte Format
        4. 8.2.11.4 Acknowledge (ACK) and Not Acknowledge (NACK)
        5. 8.2.11.5 Slave Address and Data Direction Bit
        6. 8.2.11.6 Single Read and Write
        7. 8.2.11.7 Multi-Read and Multi-Write
    3. 8.3 Device Functional Modes
      1. 8.3.1 Host Mode and Default Mode
    4. 8.4 Register Map
      1. 8.4.1  REG00
      2. 8.4.2  REG01
      3. 8.4.3  REG02
      4. 8.4.4  REG03
      5. 8.4.5  REG04
      6. 8.4.6  REG05
      7. 8.4.7  REG06
      8. 8.4.8  REG07
      9. 8.4.9  REG08
      10. 8.4.10 REG09
      11. 8.4.11 REG0A
      12. 8.4.12 REG0B
      13. 8.4.13 REG0C
      14. 8.4.14 REG0D
      15. 8.4.15 REG0E
      16. 8.4.16 REG0F
      17. 8.4.17 REG11
      18. 8.4.18 REG12
      19. 8.4.19 REG13
      20. 8.4.20 REG14
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application Diagram
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Inductor Selection
        2. 9.2.2.2 Buck Input Capacitor
        3. 9.2.2.3 System Output Capacitor
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • Operation as Slave Charger to Provide Fast Charging in Dual Charger Operation
  • Simple Configuration with Minimum BOM
  • High Efficiency 3-A, 1.5-MHz Switch Mode Buck Charge
    • 92% Charge Efficiency at 3 A and 94% Charge Efficiency at 2 A Charge Current
    • Optimize for High Voltage Input (9 V / 12 V)
    • Low Power PFM mode for Light Load Operations
  • Single Input to Support USB Input and Adjustable High Voltage Adapters
    • Support 3.9-V to 14-V Input Voltage Range
    • Input Current Limit (100 mA to 3.25 A with 50-mA resolution) to Support USB2.0, USB3.0 standard and High Voltage Adapters
    • Wide Input Dynamic Power Management (DPM) Range
  • Highest Battery Discharge Efficiency with 5-mΩ Battery MOSFET
  • Default Charge Disabled
  • Integrated ADC for System Monitor
    (Input, System and Battery Voltage, Temperature, Charge Current)
  • Flexible Autonomous and I2C Mode for Optimal System Performance
  • Remote Battery Sensing
  • High Integration includes all MOSFETs, Current Sensing and Loop Compensation
  • High Accuracy
    • ±0.5% Charge Voltage Regulation
    • ±5% Charge Current Regulation
    • ±7.5% Input Current Regulation
  • Safety
    • Thermal Regulation and Thermal Shutdown
    • Input UVLO/Overvoltage Protection
    • Battery OVP
    • Safety Timer

2 Applications

  • Smart Phone
  • Tablet PC
  • Portable Internet Devices

3 Description

The bq25898C is a highly-integrated switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. The device supports high input voltage for charging. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The I2C serial interface with charging and system settings makes the device a truly flexible solution. The bq25898C is available in a 2.8mm x 2.5mm 42-ball DSBGA package.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
bq25898C DSBGA (42) 2.80 mm x 2.50 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

bq25898C sim_schem_slusch6.gif

4 Revision History

Changes from A Revision (December 2016) to B Revision

  • Full data sheet to product folder Go

Changes from * Revision (March 2016) to A Revision

  • Added Battery MOSFET to Highest Battery Discharge Efficiency FeatureGo
  • Changed Integrated ADC for System Monitor Feature Go
  • Changed charge disabled to both fast charge and precharge disabledGo
  • Changed PG to PG in Description Go
  • Changed anode to cathode in BTST Go
  • Changed cathode to anode in REGN Go
  • Deleted I(BOOST) from Electrical CharacteristicsGo
  • Changed falling to rising in tACOV_RISING test conditions in Electrical CharacteristicsGo
  • Changed 128 mA to 0 mA (precharge disabled) in Table 2 Go
  • Changed 128 mA to 0 mA (precharge disabled) in Table 3 Go
  • Changed Fast Charge Current from 4032 mA to 3008 mA in Figure 10Go
  • Changed charge to both fast charge and precharge in Table 10 Go
  • Changed 128mA (0001) to 0mA when REG04[5:0] = 000000 in Table 11Go
  • Changed REG09 bits 5 - 2 from R/W to R Go
  • Changed bit 5 in Table 15 Go
  • Changed REG0B bit1 from x to 1 Go
  • Added note to Figure 40 Go