MAX4172ESA+/MAX4172EUA+/MAX4172GUA+, Analog Devices / Maxim Integrated

Ordering Information PART TEMP RANGE PIN-PACKAGE MAX4172ESA+ -40°C to +85°C 8 SO MAX4172EUA+ -40°C to +85°C 8 μMAX MAX4172GUA+ -40°C to +105°C 8 µMAX +Denotes a lead(Pb)-free/RoHS-compliant package. Description The MAX4172 is a low-cost, precision, high-side current sense amplifier for portable PCs, telephones, and other systems where battery/DC power-line monitoring is critical. High-side power-line monitoring is especially useful in battery-powered systems, since it does not interfere with the battery charger’s ground path. Wide bandwidth and ground-sensing capability make the device suitable for closed-loop battery-charger and general-purpose current source applications. The 0 to 32V input common-mode range is independent of the supply voltage, which ensures that current-sense feedback remains viable, even whenconnected to a battery in deep discharge. To provide a high level of flexibility, the MAX4172 functions with an external sense resistor to set the range of