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MAX4377 Dataheets PDF



Part Number MAX4377
Manufacturers Maxim Integrated
Logo Maxim Integrated
Description High-Side Current-Sense Amplifiers
Datasheet MAX4377 DatasheetMAX4377 Datasheet (PDF)

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 monito.

  MAX4377   MAX4377


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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 to +125°C. These devices have a wide bandwidth of 2MHz, making them suitable for use inside battery-charger control loops. The buffered outputs drive up to 2mA of output current into a ground-referenced load. The MAX4376 is available in a tiny 5-pin SOT23 package. The MAX4377/MAX4378 are available in space-saving 8-pin µMAX® and 14-pin TSSOP packages, respectively. Typical Operating Circuit 0 TO +28V VSENSE +3V TO +28V 0.1µF RSENSE RS+ RSVCC ILOAD MAX4376T/F/H A/D CONVERTER OUT GND LOAD/ BATTERY Features ●● Low-Cost, Single/Dual/Quad, High-Side CurrentSense Amplifiers ●● ±0.5% Typical Full-Scale Accuracy ●● +3V to +28V Supply Operation ●● Adjustable Current-Sense Capability with External Sense Resistor ●● Buffered Output Voltage with 2mA Drive ●● 1mA (typ) Supply Current ●● 2.0MHz Bandwidth (Gain = +20V/V) ●● Automotive Temperature Range (-40°C to +125°C) ●● High Accuracy +2V to +28V Common-Mode Range, Functional Down to 0V, Independent of Supply Voltage ●● Three Gain Versions Available +20V/V (MAX437_T) +50V/V (MAX437_F) +100V/V (MAX437_H) ●● Available in Space-Saving 5-Pin SOT23 (Single), 8-Pin µMAX (Dual), and 14-Pin TSSOP (Quad) ●● AEC-Q100 Qualified, Refer to Ordering Information for the List of /V Parts Applications ●● Notebook Computers ●● Current-Limited Power Supplies ●● Fuel Gauges in PC ●● General-System/Board-Level Current Monitoring ●● Battery Chargers ●● Portable/Battery-Powered Systems ●● Cell Phones ●● Smart Battery Packages ●● Automotive Current Detect ●● Power Management Systems ●● PA Bias Control ●● Automotive µMAX is a registered trademark of Maxim Integrated Products, Inc. 19-1781; Rev 13; 11/19 MAX4376/MAX4377/ MAX4378 Single/Dual/Quad, High-Side Current-Sense Amplifiers with Internal Gain Absolute Maximum Ratings VCC, RS+, RS- to GND..........................................-0.3V to +30V OUT to GND.............................................. -0.3V to (VCC + 0.3V) Differential Input Voltage (VRS+ - VRS- )................................±8V Output Short Circuit to VCC........................................Continuous Output Short Circuit to GND.................................................... 1s 8-Pin SO (derate 5.88mW/°C above +70°C)................471mW 14-Pin SO (derate 8.33mW/°C above +70°C)..............667mW 14-Pin TSSOP (derate 9.1mW/°C above +70°C).........727mW Operating Temperature Range.......................... -40°C to +125°C Junction Temperature.......................................................+150°C Current into Any Pin..........................................................±20mA Storage Temperature Range............................. -65°C to +150°C Continuous Power Dissipation (TA = +70°C) 5-Pin SOT23 (derate 3.10mW/°C above +70°C)....246.70mW Lead Temperature (soldering, 10s)................................. .+300°C Soldering Temperature (reflow)........................................+260°C 8-Pin µMAX (derate 4.5mW/°C above +70°C).............362mW Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may aff.


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