Click here for production status of specific part numbers. MAX4376/MAX4377/ Single/Dual/Quad, High-Side MAX4378 Current-Sense Amplifiers with Internal Gain General Description Features Low-Cost, Single/Dual/Quad, High-Side Current- The MAX4376/MAX4377/MAX4378 single, dual, and Sense Amplifiers quad precision high-side current-sense amplifiers are available in space-saving packages. They feature 0.5% Typical Full-Scale Accuracy buffered voltage outputs that eliminate the need for +3V to +28V Supply Operation gain-setting resistors and are ideal for todays notebook Adjustable Current-Sense Capability with External computers, cell phones, and other systems where Sense Resistor current monitoring is critical. These precision devices are Buffered Output Voltage with 2mA Drive offered in three fixed-gain versions of 20, 50, and 100: 1mA (typ) Supply Current GAIN SUFFIX 2.0MHz Bandwidth (Gain = +20V/V) 20 T Automotive Temperature Range (-40C to +125C) 50 F High Accuracy +2V to +28V Common-Mode Range, Functional Down to 0V, Independent of Supply Voltage 100 H Three Gain Versions Available For example, MAX4376TAUK is a single high-side amplifier +20V/V (MAX437 T) with a gain of 20. +50V/V (MAX437 F) High-side current monitoring is especially useful in +100V/V (MAX437 H) battery-powered systems since it does not interfere A vailable in Space-Saving 5-Pin SOT23 (Single), with the ground path of the battery charger. The input 8-Pin MAX (Dual), and 14-Pin TSSOP (Quad) common-mode range of 0 to +28V is independent of AEC-Q100 Qualified, Refer to Ordering Information the supply voltage and ensures that the current-sense for the List of /V Parts feedback remains viable even when connected to a battery pack in deep discharge. Applications The full-scale current reading can be set by choosing the Notebook Computers appropriate voltage gain and external-sense resistor. This capability offers a high level of integration and flexibility, Current-Limited Power Supplies resulting in a simple and compact current-sense solution. Fuel Gauges in PC The MAX4376/MAX4377/MAX4378 operate over a supply General-System/Board-Level Current Monitoring voltage range of +3V to +28V, draw 1mA of supply current Battery Chargers per amplifier, and operate over the full automotive tempera- Portable/Battery-Powered Systems ture range of -40C to +125C. These devices have a wide Cell Phones bandwidth of 2MHz, making them suitable for use inside Smart Battery Packages battery-charger control loops. The buffered outputs drive Automotive Current Detect up to 2mA of output current into a ground-referenced load. The MAX4376 is available in a tiny 5-pin SOT23 package. Power Management Systems The MAX4377/MAX4378 are available in space-saving PA Bias Control 8-pin MAX and 14-pin TSSOP packages, respectively. Automotive Typical Operating Circuit I LOAD V SENSE 0 TO +28V R SENSE RS+ RS- +3V TO +28V V CC 0.1F MAX4376T/F/H A/D LOAD/ OUT CONVERTER BATTERY MAX is a registered trademark of Maxim Integrated Products, Inc. GND 19-1781 Rev 13 11/19MAX4376/MAX4377/ Single/Dual/Quad, High-Side MAX4378 Current-Sense Amplifiers with Internal Gain Absolute Maximum Ratings V , RS+, RS- to GND ......................................... -0.3V to +30V 8-Pin SO (derate 5.88mW/C above +70C) ...............471mW CC OUT to GND ............................................. -0.3V to (V + 0.3V) 14-Pin SO (derate 8.33mW/C above +70C) .............667mW CC Differential Input Voltage (V - V ) ...............................8V 14-Pin TSSOP (derate 9.1mW/C above +70C) ........727mW RS+ RS- Output Short Circuit to V .......................................Continuous Operating Temperature Range ......................... -40C to +125C CC Output Short Circuit to GND.................................................... 1s Junction Temperature ......................................................+150C Current into Any Pin .........................................................20mA Storage Temperature Range ............................ -65C to +150C Continuous Power Dissipation (T = +70C) Lead Temperature (soldering, 10s) .................................+300C A 5-Pin SOT23 (derate 3.10mW/C above +70C) ...246.70mW Soldering Temperature (reflow) .......................................+260C 8-Pin MAX (derate 4.5mW/C above +70C) ............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 affect device reliability. Package Information 5 SOT23 PACKAGE CODE U5+2, U5+2A Outline Number 21-0057 Land Pattern Number 90-0174 Thermal Resistance, Multi-Layer Board: Junction to Ambient ( ) 255.90C/W JA Junction to Case ( ) 81C/W JC For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a +, , or - in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Maxim Integrated 2 www.maximintegrated.com