The MAX44284 is a high-side, current-sense amplifier that operates with a 1.7V to 5.5V single supply and is optimized for very low power operation with only 21µA of quiescent current. The MAX44284 offers precision accuracy specifications of 2µV VOS and gain error of 0.05%. The device features an input common-mode voltage range from -0.1V to +36V. This current-sense amplifier has a voltage output and is offered in four different gain versions. The MAX44284 is offered in small 6-bump, 0.4mm-pitch WLP (1.3mm x 0.9mm) and 6-pin SOT23 packages and is specified for operation over the -40°C to +125°C automotive temperature range. Applications * Base-Stations * DC-DC Current Sensing in Power Management * Medical Pulse Oximeters and Infusion Pumps * Notebook Computers * Portable-/Battery-Powered Systems * Smartphones and Tablets * Supports Use of Small Current-Sense Resistors to Improve Power-Supply Conversion Efficiency and Measurement Accuracy * Input Bias Current of 80nA (max) * Very Low 2µV Input Offset Voltage (MAX44284F/H) * Extremely Low 50nV/°C Input Offset Tempco Coefficient * -0.1V to +36V Wide Input Common-Mode Range * Low 0.05% Gain Error * Extends Battery Life * Low Supply Current of 21µA * 1.7V to 5.5V Single Supply * Shutdown Input (Independent of VDD) * Four Fixed Gain Options Simplify Design * 50V/V – MAX44284F * 100V/V – MAX44284H * 200V/V – MAX44284W * 500V/V – MAX44284E