SLUSCK6A May 2017  – August 2017


  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. 7.5Timing Requirements
    6. 7.6Electrical Characteristics
    7. 7.7Typical Characteristics
  8. Detailed Description
    1. 8.1Overview
    2. 8.2Functional Block Diagram
    3. 8.3Feature Description
      1. 8.3.1Device Power Up from Battery without Input Source
      2. 8.3.2Power Up from Input Source
        1. Up REGN Regulation
        2. Source Qualification
        3. Source Type Detection
          1. Detection Sets Input Current Limit in bq25606
        4. Voltage Limit Threshold Setting (VINDPM Threshold)
        5. Power-Up
      3. 8.3.3Boost Mode Operation From Battery
      4. 8.3.4Standalone Power Management
      5. 8.3.5Power Path Management
      6. 8.3.6Battery Charging Management
        1. Charging Cycle
        2. Termination
        3. Qualification
        4. Guideline Compliance During Charging Mode
        5. Mode Thermistor Monitor during Battery Discharge Mode
        6. Safety Timer
        7. VDC Architecture
        8. Power management
        9. Mode
      7. 8.3.7Status Outputs (PG, STAT)
        1. Good indicator (PG Pin)
        2. Status indicator (STAT)
      8. 8.3.8Protections
        1. Current Limit
        2. and Current Monitoring in Converter Operation
          1. and Current Monitoring in Buck Mode
            1. Overvoltage (ACOV)
            2. Overvoltage Protection (SYSOVP)
        3. and Current Monitoring in Boost Mode
          1. Soft Start
          2. Output Protection
          3. Mode Overvoltage Protection
        4. Regulation and Thermal Shutdown
          1. Protection in Buck Mode
          2. Protection in Boost Mode
        5. Protection
          1. overvoltage Protection (BATOVP)
          2. Over-Discharge Protection
          3. Over-Current Protection
  9. Application and Implementation
    1. 9.1Application information
    2. 9.2Typical Application Diagram
      1. 9.2.1Design Requirements
      2. 9.2.2Detailed Design Procedure
        1. Selection
        2. Capacitor
        3. Capacitor
    3. 9.3Application Curves
  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 Links
    2. 12.2Community Resources
    3. 12.3Trademarks
    4. 12.4Electrostatic Discharge Caution
    5. 12.5Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Orderable Information


  • High-Efficiency, 1.5-MHz, Synchronous Switch-Mode Buck Charger
    • 92% Charge Efficiency at 2 A from 5-V Input
    • Optimized for USB Voltage Input (5 V)
  • Supports USB On-The-Go (OTG)
    • Boost Converter With Up to 1.2-A Output
    • 92% Boost Efficiency at 1-A Output
    • Accurate Constant Current (CC) Limit
    • Soft-Start Up To 500-µF Capacitive Load
    • Output Short Circuit Protection
  • Single Input to Support USB Input and High Voltage Adapters
    • Support 3.9-V to 13.5-V Input Voltage Range With 22-V Absolute Maximum Input Voltage Rating
    • Maximum Power Tracking by Input Voltage Limit Up to 4.6 V (VINDPM)
    • VINDPM Threshold Automatically Tracks Battery Voltage
    • Auto Detect USB SDP, DCP and Non-Standard Adaptors
  • High Battery Discharge Efficiency With 19.5-mΩ Battery Discharge MOSFET
  • Narrow VDC (NVDC) Power Path Management
    • Instant-On Works with No Battery or Deeply Discharged Battery
    • Ideal Diode Operation in Battery Supplement Mode
  • High Integration Includes All MOSFETs, Current Sensing and Loop Compensation
  • 58-µA Low Battery Leakage Current with System Voltage Standby
  • High Accuracy
    • ±0.5% Charge Voltage Regulation
    • ±6% at 1.2-A and 1.8-A Charge Current Regulation
    • ±5% at 0.5-A, 1.2-A and 1.8-A Input Current Regulation
  • Create a Custom Design Using the bq25606 With the WEBENCH® Power Designer


  • EPOS, Portable Speakers, E-Cigarette
  • Portable Internet Devices and Accessory


The bq25606 device a highly-integrated standalone 3.0-A switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase.

Device Information(1)

bq25606 VQFN (24)4.00 mm × 4.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Application

bq25606 simp_app_slusck6.gif