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.