MAX4172ESA+/MAX4172EUA+/MAX4172GUA+, Analog Devices / Maxim Integrated
MAX4172ESA+/MAX4172EUA+/MAX4172GUA+, Analog Devices / Maxim Integrated
SKU: MAX4172-ANALOG-DEVICES-MAXIM-INTEGRATED
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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 when
connected 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 load current to be monitored. It has a current output that can be converted to a ground-referred voltage with a single resistor, accommodating a wide range of battery voltages and currents. An open-collector power-good output (PG) indicates when the supply voltage reaches an adequate level to guarantee proper operation of the current-sense amplifier. The MAX4172 operates with a 3.0V to 32V supply voltage, and is available in a space-saving, 8-pin μMAX® or SO package.
Applications
- Portable PCs: Notebooks/Subnotebooks/Palmtops
- Battery-Powered/Portable Equipment
- Closed-Loop Battery Chargers/Current Sources
- Smart-Battery Packs
- Portable/Cellular Phones
- Portable Test/Measurement Systems
- Energy Management Systems
