MAX4375FEUB+

The MAX4375FEUB+ is a low cost, micropower, high side current sense supervisor in 10 pin µMAX package. This device contains a high side current sense amplifier, bandgap reference and comparator with latching output to monitor a supply for an overcurrent condition. It features a voltage output that eliminates the need for gain-setting resistors making it ideal for 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 MAX4375 is latched to provide a turn-off flag that doesn’t oscillate. It contains a second comparator for use in window-detection functions.

• Supply voltage range is 2.7V to 28V
• Operating temperature range from -40°C to 85°C
• Input offset voltage is 1mV maximum
• Full scale accuracy is 2%
• Internal bandgap reference is ±1.6% accuracy
• Supply current is 50μA
• Common mode rejection is 85dB
• Gain is +50V/V and -3dB bandwidth is 120KHz

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Signal Processing, Portable Devices

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