1µA, µDFN/SC70, Lithium-Ion Battery, Precision Current-Sense Amplifier

The MAX9610 high-side current-sense Amplifier offers precision accuracy specifications of VOS less than 500V (max) and gain error less than 0.5% (max). This device features an ultra-low 1A quiescent supply cur- rent. The MAX9610 fits in a tiny, 1mm x 1.5mm DFN package or a 5-pin SC70 package, making this part ideal for applications in notebook computers, cell phones, cameras, PDAs, and all lithium-ion battery- operated portable devices where accuracy, low quies- cent current, and small size are critical. The MAX9610 features an input voltage range (com- mon mode) from 1.6V to 5.5V. This input range is excel- lent for monitoring the current of a single-cell, lithium-ion battery (Li+), which at full charge is 4.2V, typically 3.6V in normal use, and less than 2.9V when ready to be recharged. These current-sense Amplifiers have a voltage output and are offered in three gain ver- sions: 25V/V (MAX9610T), 50V/V (MAX9610F), and 100V/V (MAX9610H). By Maxim Integrated Products