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

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.