SLIS146G June   2012  – September 2017 BQ24392


  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  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 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Charger Detection
    4. 7.4 Device Functional Modes
  8. Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Using the BQ24392 GPIOs
        1. CHG_AL and CHG_DET
        2. SW_OPEN
        3. GOOD_BAT
        4. Slow Plug-in Event
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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


  • USB 2.0 High Speed Switch
  • Detects USB Battery Charging Specification Version 1.2 (BCv1.2) Compliant Chargers
  • Compatible Accessories
    • Dedicated Charging Port
    • Standard Downstream Port
    • Charging Downstream Port
  • Non-Standard Chargers
    • Apple™ Charger
    • TomTom™ Charger
    • USB Chargers Not Compliant With Battery Charging Specification Version 1.2 (BCv1.2)
  • –2 V to 28 V VBUS Voltage Range
  • ESD Performance Tested per JESD 22
    • 4000-V Human-Body Model
    • 1500-V Charged-Device Model (C101)
  • ESD Performance DP_CON/DM_CON to GND
    • ±8-kV Contact Discharge (IEC 61000-4-2)


  • Mobile Phones
  • Smart Phones
  • Cameras
  • GPS Systems


The BQ24392 is a dual single-pole single-throw (SPST) USB 2.0 high-speed isolation switch with charger detection capabilities for use with micro and mini-USB ports. This USB switch allows mobile phones, tablets, and other battery operated electronics to be charged from different adapters with minimal system software. The device’s charger detection circuitry can support USB Battery Charging Specification version 1.2 (BCv1.2) compliant, Apple™, TomTom™, and other non-standard chargers.

The BQ24392 device is powered through VBUS when a charger is attached to the micro or mini-USB port and has a 28-V tolerance to avoid the need for external protection.

Device Information(1)

BQ24392 UQFN (10) 2.05 mm × 1.55 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.



480-Mbps USB 2.0 Eye Diagram With USB Switch

BQ24392 eye2_lis146.gif

Revision History

Changes from F Revision (July 2017) to G Revision

  • Changed RON From: 8 Ω TYP To: 3.5 Ω TYP, 6.9 Ω MAX in the Electrical Characteristic table Go

Changes from E Revision (February 2017) to F Revision

  • Changed CHG_DET diode direction from right facing to left facing in Application Schematic. Go

Changes from D Revision (January 2016) to E Revision

  • Changed From: BQ24932 To: BQ24392 in the DescriptionGo
  • Changed From: BQ24932 To: BQ24392 in the OverviewGo
  • Changed title From: Using the BQ24932 GPIOs To: Using the BQ24392 GPIOsGo

Changes from C Revision (January 2015) to D Revision

  • Changed diode direction from left facing to right facing in Application Schematic. Go

Changes from B Revision (October 2014) to C Revision

  • Updated Features. Go

Changes from A Revision (June 2012) to B Revision

  • Added ESD 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