SBOS765 January   2016

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 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. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 High Input Common-Mode Range
      2. 7.3.2 High Current-Sense Accuracy Over a Wide Dynamic Range
    4. 7.4 Device Functional Modes
      1. 7.4.1 Normal Operation
        1. 7.4.1.1 Device Power-Up
        2. 7.4.1.2 Input Differential Overload
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curve
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • Wide Common-Mode Range: 0 V to 20 V
  • Offset Voltage: ±150 μV (Maximum)
    • Enables Shunt Drops of 10-mV Full-Scale
  • Accuracy: ±2% Gain Error (Maximum Overtemperature)
  • Fixed Gain: 50 V/V
  • Low Quiescent Current: 100 μA (Maximum)
  • Small Package: SC70

2 Applications

  • WPC (Qi) 1.2-Compliant Wireless Power Transmitters for 15-W or 5-W Systems
  • Proprietary Wireless Chargers and Transmitters
  • Wirelessly-Powered Industrial and Medical Systems
  • For more information, see www.ti.com/wirelesspower

3 Description

The bq500100 is a voltage output, current-shunt monitor for wireless charging to facilitate foreign object detection (FOD). This device can sense drops across shunts at common-mode voltages from 0 V to 20 V, independent of the supply voltage. The device features a fixed voltage gain of 50 V/V with a maximum gain error of 2% and a offset voltage of 150 μV (maximum).

This device operates from a single 2.7-V to 6-V power supply, drawing a maximum of 100 μA of supply current. The device is specified from –40°C to +105°C and is offered in the SC70 package.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
bq500100 SC70 (6) 2.00 mm × 1.25 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Wireless Charging Application

bq500100 app_diag_sbos765.gif