MAX4373, MAX4374, MAX4375 Low-Cost, Micropower, High-Side Current-Sense Amplifier + Comparator + Reference ICs
The MAX4373 MAX4374 MAX4375 low-cost, micropower, high-side current-sense supervisors contain a high-side current-sense Amplifier bandgap reference, and Comparator with latching output. They feature a voltage output that eliminates the need for gain-setting resistors, making them ideal for today's notebook computers, cell phones, and other systems where battery/DC current monitoring is critical. High-side current monitoring is especially useful in battery-powered systems since it does not interfere with the ground path of the Battery Charger The 0 to +28V input common-mode range is independent of the supply voltage, which ensures that the current-sense feedback remains viable even when connected to a battery pack in deep discharge.
The Comparator output of the MAX4373 MAX4374 MAX4375 is latched to provide a turn-off flag that doesn't oscillate. In addition, the MAX4374 MAX4375 contain a second Comparator for use in window-detection functions. The MAX4373 MAX4374 MAX4375 are available in three different gain versions (T = +20V/V, F = +50V/V, H = +100V/V) and use an external sense resistor to set the sensitivity of the input voltage to the load current. These features offer a high level of integration, resulting in a simple and compact current-sense solution.
The MAX4373 MAX4374 MAX4375 operate from a single +2.7V to +28V supply and consume 50A. They are specified for the extended operating temperature range (-40C to +85C) and are available in 8-pin and 10-pin MAX packages.
By Maxim Integrated Products
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