SLUS618I August   2004  – December 2014

UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.  

1. 1 Features
2. 2 Applications
3. 3 Description
4. 4 Power Flow Diagram
5. 5 Revision History
6. 6 Description (continued)
7. 7 Device Options
8. 8 Pin Configuration and Functions
9. 9 Specifications
   1. 9.1 Absolute Maximum Ratings
   2. 9.2 ESD Ratings
   3. 9.3 Recommended Operating Conditions
   4. 9.4 Thermal Information
   5. 9.5 Dissipation Ratings
   6. 9.6 Electrical Characteristics
   7. 9.7 Typical Characteristics
10. 10Detailed Description
    1. 10.1 Overview
    2. 10.2 Functional Block Diagram
    3. 10.3 Feature Description
       1. 10.3.1  bq24038 Differences
       2. 10.3.2  Power-Path Management
          1. 10.3.2.1 Case 1: AC Mode (PSEL = High)
             1. 10.3.2.1.1 System Power
             2. 10.3.2.1.2 Charge Control
             3. 10.3.2.1.3 Dynamic Power-Path Management (DPPM)
          2. 10.3.2.2 Case 2: USB (PSEL = Low) bq24030/31/32A/38
             1. 10.3.2.2.1 System Power
             2. 10.3.2.2.2 Charge Control
             3. 10.3.2.2.3 Dynamic Power-Path Management (DPPM)
             4. 10.3.2.2.4 Battery Temperature Monitoring
       3. 10.3.3  Charge Status Outputs
       4. 10.3.4  ACPG, USBPG Outputs (Power Good), bq24030/31/32A/35
       5. 10.3.5  PG Output (Power Good), bq24038
       6. 10.3.6  CE Input (Chip Enable)
       7. 10.3.7  VBSEL Input (Battery Voltage Selection), bq24038
       8. 10.3.8  DPPM Used As A Charge Disable Function
       9. 10.3.9  Timer Fault Recovery
       10. 10.3.10 Short-Circuit Recovery
       11. 10.3.11 LDO Regulator
    4. 10.4 Device Functional Modes
       1. 10.4.1 Sleep Mode - V(IN) < VI(BAT)
       2. 10.4.2 Standby Mode - V(IN) > VI(BAT)and CE (Chip Enable) Pin = Low
       3. 10.4.3 Battery Charge Mode - V(IN) > VI(BAT), Battery Present, CE Pin = High and DPPM Pin Not Floating
          1. 10.4.3.1 Autonomous Power Source Selection, PSEL Control Pin
       4. 10.4.4 Charge Control
          1. 10.4.4.1 Battery Pre-Conditioning
          2. 10.4.4.2 Battery Charge Current
          3. 10.4.4.3 Battery Voltage Regulation
          4. 10.4.4.4 Power Handoff
          5. 10.4.4.5 Temperature Regulation and Thermal Protection
          6. 10.4.4.6 Charge Timer Operation
          7. 10.4.4.7 Charge Termination and Recharge
       5. 10.4.5 Boot-Up Sequence
11. 11Application and Implementation
    1. 11.1 Application Information
    2. 11.2 Typical Application
       1. 11.2.1 Design Requirements
       2. 11.2.2 Detailed Design Procedure
          1. 11.2.2.1 Selecting the Input and Output Capacitors
       3. 11.2.3 Application Curves
12. 12Power Supply Recommendations
13. 13Layout
    1. 13.1 Layout Guidelines
    2. 13.2 Layout Example
    3. 13.3 Thermal Considerations
14. 14Device and Documentation Support
    1. 14.1 Device Support
       1. 14.1.1 Third-Party Products Disclaimer
    2. 14.2 Documentation Support
       1. 14.2.1 Related Documentation
    3. 14.3 Related Links
    4. 14.4 Trademarks
    5. 14.5 Electrostatic Discharge Caution
    6. 14.6 Glossary
15. 15Mechanical, Packaging, and Orderable Information