SLUSB97A October 2012  – December 2014

PRODUCTION DATA. 

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Description (Continued)
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1Absolute Maximum Ratings
    2. 7.2ESD Ratings
    3. 7.3Recommended Operating Conditions
    4. 7.4Thermal Information
    5. 7.5Electrical Characteristics
    6. 7.6Typical Characteristics
  8. Detailed Description
    1. 8.1Overview
    2. 8.2Functional Block Diagram
    3. 8.3Feature Description
      1. 8.3.1Device Power Up
        1. 8.3.1.1Power-On-Reset (POR)
        2. 8.3.1.2Power Up from Battery without DC Source
          1. 8.3.1.2.1BATFET Turn Off
          2. 8.3.1.2.2Shipping Mode
        3. 8.3.1.3Power Up from DC Source
          1. 8.3.1.3.1REGN LDO
          2. 8.3.1.3.2Input Source Qualification
          3. 8.3.1.3.3Input Current Limit Detection
          4. 8.3.1.3.4D+/D- Detection Sets Input Current Limit
          5. 8.3.1.3.5HIZ State wth 100mA USB Host
          6. 8.3.1.3.6Force Input Current Limit Detection
        4. 8.3.1.4Converter Power-Up
        5. 8.3.1.5Boost Mode Operation from Battery
      2. 8.3.2Power Path Management
        1. 8.3.2.1Narrow VDC Architecture
        2. 8.3.2.2Dynamic Power Management
        3. 8.3.2.3Supplement Mode
      3. 8.3.3Battery Charging Management
        1. 8.3.3.1Autonomous Charging Cycle
        2. 8.3.3.2Battery Charging Profile
        3. 8.3.3.3Thermistor Cold/Hot Temperature Window
        4. 8.3.3.4Charging Termination
          1. 8.3.3.4.1Termination when REG02[0] = 1
          2. 8.3.3.4.2Termination when REG05[6] = 1
        5. 8.3.3.5Charging Safety Timer
        6. 8.3.3.6USB Timer when Charging from USB100mA Source
      4. 8.3.4Status Outputs (STAT and INT)
        1. 8.3.4.1Charging Status Indicator (STAT)
        2. 8.3.4.2Interrupt to Host (INT)
      5. 8.3.5Protections
        1. 8.3.5.1Input Current Limit on ILIM
        2. 8.3.5.2Thermal Regulation and Thermal Shutdown
        3. 8.3.5.3Voltage and Current Monitoring in Buck Mode
          1. 8.3.5.3.1Input Over-Voltage (ACOV)
          2. 8.3.5.3.2System Over-Voltage Protection (SYSOVP)
        4. 8.3.5.4Current Monitoring in Boost Mode
        5. 8.3.5.5Battery Protection
          1. 8.3.5.5.1Battery Over-Current Protection (BATOVP)
          2. 8.3.5.5.2Charging During Battery Short Protection
          3. 8.3.5.5.3System Over-Current Protection
      6. 8.3.6Serial Interface
        1. 8.3.6.1Data Validity
        2. 8.3.6.2START and STOP Conditions
        3. 8.3.6.3Byte Format
        4. 8.3.6.4Acknowledge (ACK) and Not Acknowledge (NACK)
        5. 8.3.6.5Slave Address and Data Direction Bit
          1. 8.3.6.5.1Single Read and Write
          2. 8.3.6.5.2Multi-Read and Multi-Write
    4. 8.4Device Functional Modes
      1. 8.4.1Host Mode and Default Mode
        1. 8.4.1.1Plug in USB100mA Source with Good Battery
        2. 8.4.1.2USB Timer when Charging from USB 100-mA Source
    5. 8.5Register Map
      1. 8.5.1I2C Registers
        1. 8.5.1.1 Input Source Control Register REG00 (reset = 00110000, or 30)
        2. 8.5.1.2 Power-On Configuration Register REG01 (reset = 00011011, or 1B)
        3. 8.5.1.3 Charge Current Control Register REG02 (reset = 01100000, or 60)
        4. 8.5.1.4 Pre-Charge/Termination Current Control Register REG03 (reset = 00010001, or 11)
        5. 8.5.1.5 Charge Voltage Control Register REG04 (reset = 10110010, or B2)
        6. 8.5.1.6 Charge Termination/Timer Control Register REG05 (reset = 10011010, or 9A)
        7. 8.5.1.7 Thermal Regulation Control Register REG06 (reset = 00000011, or 03)
        8. 8.5.1.8 Misc Operation Control Register REG07 (reset = 01001011, or 4B)
        9. 8.5.1.9 System Status Register REG08
        10. 8.5.1.10Fault Register REG09
        11. 8.5.1.11Vender / Part / Revision Status Register REG0A (reset = 00100011, or 23)
  9. Application and Implementation
    1. 9.1Application Information
    2. 9.2Typical Application
      1. 9.2.1Design Requirements
      2. 9.2.2Detailed Design Procedure
        1. 9.2.2.1Inductor Selection
        2. 9.2.2.2Input Capacitor
        3. 9.2.2.3Output Capacitor
      3. 9.2.3Application Performance Plots
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1Layout Guidelines
    2. 11.2Layout Example
  12. 12Device and Documentation Support
    1. 12.1Documentation Support
      1. 12.1.1Related Documentation
    2. 12.2Related Links
    3. 12.3Trademarks
    4. 12.4Electrostatic Discharge Caution
    5. 12.5Glossary
  13. 13Mechanical, Packaging, and Orderable Information

1 Features

  • High Efficiency Switch Mode Charger
    • 2.5-A (bq24195L) or 4.5-A (bq24195) Fast Charging
    • 92% Charge Efficiency at 2 A, 90% at 4 A
  • Synchronous Boost Converter in Battery Boost Mode
    • 5.1 V at 1 A (bq24195L) or 5.1 V at 2.1 A (bq24195)
    • 94% 5.1-V Boost Efficiency at 1 A,
      91% at 2.1 A
  • Highest Battery Discharge Efficiency with 12-mΩ Battery Discharge MOSFET up to 9-A Discharge Current
  • Single Input USB-compliant/Adapter Charger
    • USB Host or Charging Port D+/D- Detection Compatible to USB Battery Charger Spec 1.2
    • Input Voltage and Current Limit Supports USB2.0 and USB3.0
    • Input Current Limit: 100 mA, 150 mA, 500 mA, 900 mA, 1.2 A, 1.5 A, 2 A and 3 A
  • 3.9-V to 17-V Input Operating Voltage Range
    • Support All Kinds of Adapter with Input Voltage DPM Regulation
  • Narrow VDC (NVDC) Power Path Management
    • Instant-on Works with No Battery or Deeply Discharged Battery
    • Ideal Diode Operation in Battery Supplement Mode
  • 1.5-MHz Switching Frequency for Low Profile Inductor
  • Autonomous Battery Charging with or without Host Management
    • Battery Charge Enable
    • Battery Charge Preconditioning
    • Charge Termination and Recharge
  • High Accuracy (0°C to 125°C)
    • ±0.5% Charge Voltage Regulation
    • ±7% Charge Current Regulation
    • ±7.5% Input Current Regulation
    • ±2% Output Regulation in Boost Mode
  • High Integration
    • Power Path Management
    • Synchronous Switching MOSFETs
    • Integrated Current Sensing
    • Bootstrap Diode
    • Internal Loop Compensation
  • Safety
    • Battery Temperature Sensing and Charging Safety Timer
    • Thermal Regulation and Thermal Shutdown
    • Input System Over-Voltage Protection
    • MOSFET Over-Current Protection
  • Charge Status Outputs for LED or Host Processor
  • Low Battery Leakage Current and Support Shipping Mode
  • 4.00 mm x 4.00 mm QFN-24 Package

2 Applications

  • Power Bank for Smartphone, Tablet
  • Tablet PC and Smart Phone
  • Portable Audio Speaker
  • Portable Media Players
  • Internet Devices

3 Description

The bq24195L, bq24195 are highly-integrated switch-mode battery charge management and system power path management devices for single cell Li-Ion and Li-polymer battery in a wide range of power bank, tablet and other portable devices.

Device Information(1)

PART NUMBERPACKAGEBODY SIZE (NOM)
bq24195VQFN (24)4.00 mm x 4.00 mm
bq24195L
  1. For all available packages, see the orderable addendum at the end of the datasheet.
app_diag_lusb97.gif

4 Revision History

Changes from * Revision (October 2012) to A Revision

  • Added Handling Rating table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section. Go
  • Changed VSLEEPZ, VBAT_DPL_HY, VBATGD , ICHG_20pct, VSHORT, IADPT_DPM, KILIM, VBTST_REFRESH in Electrical CharacteristicsGo
  • Added –40°C to 85° to IBAT Test ConditionGo
  • Added REG00[6:3] = 0110 (4.36 V) or 1011 (4.76 V) to VINDPM_REG_ACC Test ConditionsGo
  • Added a MIN value of 435 to KILIMGo
  • Deleted TJunction_REG MIN and MAXGo
  • Changed VOTG_ILIM to IOTG_ILIMGo
  • Changed Functional Block DiagramGo
  • Changed Charging Current in Table 3Go
  • Changed REG09[5:4] to REG08[5:4] in Charging Termination sectionGo
  • Changed Charging Safety Timer descriptionGo
  • Changed Host Mode and Default Mode descriptionGo
  • Changed Charge Current Control Register REG02 Bit 0 description and noteGo