TSC101

TSC101 High side current sense amplifier Features ■ Independent supply and input common-mode voltages ■ Wide common-mode operating range: 2.8 to 30 V ■ Wide common-mode surviving range: -0.3 to 60 V (load-dump) ■ Wide supply voltage range: 4 to 24 V ■ Low current consumption: ICC max = 300 µA ■ Internally fixed gain: 20 V/V, 50 V/V or 100 V/V ■ Buffered output Applications ■ Automotive current monitoring ■ Notebook computers ■ DC motor controls ■ Photovoltaic systems ■ Battery chargers ■ Precision current sources Description The TSC101 measures a small differential voltage on a high-side shunt resistor and translates it into a ground-referenced output voltage. The gain is internally fixed. Wide input common-mode voltage range, low quiescent current, and tiny SOT23 packaging enable use in a wide variety of applications. L SOT23-5 (Plastic package) Pin connections (top view) Out 1 Gnd 2 Vp 3 5 Vcc 4 Vm The input common-mode and power supply voltages are independent. The common-mode voltage can range from 2.8 to 30 V in operating conditions and up to 60 V in absolute maximum rating conditions. The current consumption below 300 µA and the wide supply voltage range enable the power supply to be connected to either side of the current measurement shunt with minimal error. March 2011 Doc ID 13313 Rev 3 1/18 www.st.com 18 Application schematics and pin description 1 Application schematics and pin description TSC101 The TSC101 high-side current sense amplifier features a ...