MAX9610 19-4342 Rev 0 10/08 1A, DFN/SC70, Lithium-Ion Battery, Precision Current-Sense Amplifier General Description Features The MAX9610 high-side current-sense amplifier offers Ultra-Low Supply Current of 1A (max) precision accuracy specifications of V less than OS Low 500V (max) Input Offset Voltage 500V (max) and gain error less than 0.5% (max). This Low < 0.5% (max) Gain Error device features an ultra-low 1A quiescent supply cur- rent. The MAX9610 fits in a tiny, 1mm x 1.5mm DFN Input Common Mode: +1.6V to +5.5V package or a 5-pin SC70 package, making this part Voltage Output ideal for applications in notebook computers, cell phones, cameras, PDAs, and all lithium-ion (Li+) bat- Three Gain Versions Available tery-operated portable devices where accuracy, low 25V/V (MAX9610T) quiescent current, and small size are critical. 50V/V (MAX9610F) The MAX9610 features an input voltage range (com- 100V/V (MAX9610H) mon mode) from 1.6V to 5.5V. This input range is excel- Tiny DFN (1mm x 1.5mm x 0.8mm) and lent for monitoring the current of a single-cell, SC70 Packages lithium-ion battery, which at full charge is 4.2V, typically 3.6V in normal use, and less than 2.9V when ready to Ordering Information be recharged. These current-sense amplifiers have a voltage output and are offered in three gain versions: PIN- GAIN PART* TOP MARK PACKAGE (V/V) 25V/V (MAX9610T), 50V/V (MAX9610F), and 100V/V (MAX9610H). MAX9610TELT+T 6 DFN 25 OU The three gain versions offer flexibility in the choice of MAX9610FELT+T 6 DFN 50 OS the external current-sense resistor. The very low 500V MAX9610HELT+T 6 DFN 100 OT (max) input offset voltage allows small 25mV to 50mV MAX9610TEXK+T 5 SC70 25 ATG full-scale V voltage for very low voltage drop at SENSE full-load current measurement. MAX9610FEXK+T 5 SC70 50 ATE MAX9610HEXK+T 5 SC70 100 ATF The MAX9610 is offered in tiny 6-pin DFN, (1mm x 1.5mm x 0.8mm footprint) and 5-pin SC70 packages, *All devices are specified over the -40C to +85C extended specified for operation over the -40C to +85C temper- temperature range. ature range. +Denotes a lead-free/RoHS-compliant package. For a very similar 1.6V to 28V input voltage device in a T = Tape and reel. 4-bump UCSP package (1mm x 1mm x 0.6mm), refer Typical Operating Circuit to the MAX9938 data sheet. I Applications LOAD R SENSE Cell Phones RS+ RS- Cameras LOAD Portable Li+ Battery Powered Systems R R 1 1 3.3V and 5V Power Management Systems V = BATT PDAs 1.6V to 5.5V USB Ports V = 3.3V DD P C OUT ADC Pin Configurations appear at end of data sheet. UCSP is a trademark of Maxim Integrated Products, Inc. R OUT 10k MAX9610 GND Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.1A, DFN/SC70, Lithium-Ion Battery, Precision Current-Sense Amplifier ABSOLUTE MAXIMUM RATINGS RS+, RS- to GND......................................................-0.3V to +6V Operating Temperature Range ...........................-40C to +85C OUT to GND .............................................................-0.3V to +6V Junction Temperature......................................................+150C RS+ to RS- .............................................................................6V Storage Temperature Range .............................-65C to +150C Short-Circuit Duration: OUT to GND or RS+ ..............Continuous Lead Temperature (soldering, 10s) .................................+300C Continuous Input Current (Any Pin)..................................20mA Package Reflow Soldering Temperature .........................+260C Continuous Power Dissipation (T = +70C) A 5-Pin SC70 (derate 3.1mW/C above +70C)..............247mW 6-Pin DFN (derate 2.1mW/C above +70C) .............168mW 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 = V = 3.6V, V = (V - V ) = 0, T = -40C to +85C, unless otherwise noted. Typical values are at T = +25C.) RS+ RS- SENSE RS+ RS- A A (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS V = 3.6V, T = +25C 0.6 1.0 RS+ A V = 3.6V, -40C < T < +85C 1.4 Supply Current RS+ A I A CC (Note 2) V = 5.5V, T = +25C 0.75 1.2 RS+ A V = 5.5V, -40C < T < +85C 1.6 RS+ A Guaranteed by CMRR, Common-Mode Input Range V 1.6 5.5 V CM -40C < T < +85C A Common-Mode Rejection Ratio CMRR 1.6V < V < 5.5V, -40C < T < +85C 80 104 dB RS+ A T = +25C, gain = 25, 50, 100 (Note 3) 100 500 A Input Offset Voltage V Gain = 25, 50 600 V OS -40C < T < +85C A Gain = 100 700 MAX9610T 25 Gain G MAX9610F 50 V/V MAX9610H 100 T = +25C, gain = 25, 50, 100 (Note 4) 0.1 0.5 A Gain Error GE % Gain = 25, 50 0.8 -40C < T < +85C A Gain = 100 1 Output Resistance R T = +25C (Note 5) 7.0 10 13.2 k OUT A G = 25 2.5 15 OUT Low Voltage V G = 50 5 30 mV OL G = 100 10 70 OUT High Voltage V V = V - V (Note 6) 0.1 0.2 V OH OH RS- OUT 2 MAX9610