MAX4073T/F/H Low-Cost, SC70, Voltage-Output, High-Side Current-Sense Amplifier General Description Features The MAX4073 low-cost, high-side current-sense ampli- Low-Cost, Compact, Current-Sense Solution fier features a voltage output that eliminates the need Three Gain Versions Available for gain-setting resistors making it ideal for cell phones, +20V/V (MAX4073T) notebook computers, PDAs, and other systems where current monitoring is crucial. High-side current moni- +50V/V (MAX4073F) toring does not interfere with the ground path of the +100V/V (MAX4073H) battery charger making the MAX4073 particularly useful 1.0% Full-Scale Accuracy in battery-powered systems. The input common-mode range of +2V to +28V is independent of the supply volt- 500A Supply Current age. The MAX4073s wide 1.8MHz bandwidth makes it Wide 1.8MHz Bandwidth suitable for use inside battery-charger control loops. +3V to +28V Operating Supply The combination of three gain versions and a selec- table external-sense resistor sets the full-scale current Wide +2V to +28V Common-Mode Range reading. The MAX4073 offers a high level of integra- Independent of Supply Voltage tion, resulting in a simple and compact current-sense solution. Automotive Temperature Range (-40C to +125C) The MAX4073 operates from a +3V to +28V single sup- Available in Space-Saving 5-Pin SC70 Package ply and draws only 0.5mA of supply current. This device is specified over the automotive operating tem- Typical Operating Circuit perature range (-40C to +125C) and is available in a space-saving 5-pin SC70 package (half the size of the SOT23). I LOAD V SENSE For a similar device in a 6-pin SOT23 with a wider com- V LOW-COST IN +2V TO +28V SWITCHING mon-mode voltage range (0 to +28V), see the REGULATOR R SENSE MAX4173 data sheet. +3V TO +28V RS+ RS- Applications V CC 0.1F Cell Phones MAX4073T/F/H Notebook Computers Portable/Battery-Powered Systems LOAD/ OUT Smart Battery Packs/Chargers BATTERY GND PDAs Power Management Systems PA Bias Control General System/Board-Level Current Monitoring Pin Configurations appear at end of data sheet. Precision Current Sources Ordering Information PART TEMP. RANGE PIN-PACKAGE GAIN (V/V) TOP MARK MAX4073TAXK+T -40C to +125C 5 SC70 20 ACM MAX4073TAUT+T -40C to +125C 6 SOT23 20 AAUE MAX4073FAXK+T -40C to +125C 5 SC70 50 ACN MAX4073FAUT+T -40C to +125C 6 SOT23 50 AAUF MAX4073HAXK+T -40C to +125C 5 SC70 100 ACO MAX4073HAUT+T -40C to +125C 6 SOT23 100 AAUG +Denotes lead(Pb)-free/RoHS-compliant package. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maximintegrated.com. 19-2048 Rev 1 8/12MAX4073T/F/H Low-Cost, SC70, Voltage-Output, High-Side Current-Sense Amplifier ABSOLUTE MAXIMUM RATINGS V to GND............................................................-0.3V to +30V Operating Temperature Range .........................-40C to +125C CC RS+, RS- to GND....................................................-0.3V to +30V Junction Temperature......................................................+150C OUT to GND ...............................................-0.3V to (V + 0.3V) Storage Temperature Range .............................-65C to +150C CC Output Short-Circuit to GND ......................................Continuous Lead Temperature (soldering, 10s) .................................+300C Differential Input Voltage (V - V ) .................................5V Soldering Temperature ....................................................+260C RS+ RS- Current Into Any Pin..........................................................20mA Continuous Power Dissipation (T = +70C) A 5-Pin SC70 (derate 2.27mW/C above +70C)............200mW 6-Pin SOT23 (derate 8.7mW/C above +70C)............696mW 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. ELECTRICAL CHARACTERISTICS (V = +2V to +28V, V = (V - V ) = 0, V = +3V to +28V, T = T to T , unless otherwise noted. Typical values are RS+ SENSE RS+ RS- CC A MIN MAX at T = +25C.) (Note 1) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Operating Voltage Range V (Note 2) 3 28 V CC Common-Mode Input Range V (Note 3) 2 28 V CMR Common-Mode Rejection CMR V = 100mV, V = 12V 90 dB SENSE CC Supply Current I V = 28V 0.5 1.2 mA CC CC Leakage Current I /I V = 0V, V = 28V 0.05 1 A RS+ RS- CC RS+ I 20 60 RS+ Input Bias Current A I 40 120 RS- Full-Scale Sense Voltage V V = (V - V ) 150 mV SENSE SENSE RS+ RS- V = 100mV, V = 12V, V = 2V 1.0 SENSE CC RS+ V = 100mV, V = 12V, SENSE CC 1.0 5.0 o V = 12V, T = +25 C RS+ A V = 100mV, V = 12V, SENSE CC 7.0 V = 12V, T = T to T RS+ A MIN MAX Total OUT Voltage Error (Note 4) % V = 100mV, V = 28V, SENSE CC 1.0 5.0 o V = 28V, T = +25 C RS+ A V = 100mV, V = 28V, SENSE CC 8.5 V = 28V, T = T to T RS+ A MIN MAX V = 6.25mV (Note 5) V = 12V, SENSE CC 7.5 V = 12V RS+ Extrapolated Input Offset Voltage V V = V = 12V, V > 10mV 1.0 mV OS CC RS+ SENSE MAX4073T, V = 3V CC V = SENSE OUT High Voltage (V - V ) MAX4073F, V = 7.5V 0.8 1.2 V CC OH CC 150mV MAX4073H, V = 15V CC 2 Maxim Integrated