High-Side Current-Sense Amplifiers
Click here for production status of specific part numbers.
MAX4376/MAX4377/ MAX4378
Single/Dual/Quad, High-Side Current...
Description
Click here for production status of specific part numbers.
MAX4376/MAX4377/ MAX4378
Single/Dual/Quad, High-Side Current-Sense Amplifiers with Internal Gain
General Description
The MAX4376/MAX4377/MAX4378 single, dual, and quad precision high-side current-sense amplifiers are available in space-saving packages. They feature buffered voltage outputs that eliminate the need for gain-setting resistors and are ideal for today’s notebook computers, cell phones, and other systems where current monitoring is critical. These precision devices are offered in three fixed-gain versions of 20, 50, and 100:
GAIN
SUFFIX
20 T
50 F
100 H
For example, MAX4376TAUK is a single high-side amplifier
with a gain of 20.
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 input
common-mode range of 0 to +28V is independent of
the supply voltage and ensures that the current-sense
feedback remains viable even when connected to a
battery pack in deep discharge.
The full-scale current reading can be set by choosing the
appropriate voltage gain and external-sense resistor. This
capability offers a high level of integration and flexibility,
resulting in a simple and compact current-sense solution.
The MAX4376/MAX4377/MAX4378 operate over a supply
voltage range of +3V to +28V, draw 1mA of supply current
per amplifier, and operate over the full automotive tempera-
ture range of -40°C t...
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