EVALUATION KIT AVAILABLE MAX9634 nanoPower, 4-Bump UCSP/SOT23, Precision Current-Sense Amplifier General Description Benefits and Features The MAX9634 high-side current-sense amplifier offers Ultra-Low Supply Current of 1A (max) precision accuracy specifications of V less than 250V OS Low 250V (max) Input Offset Voltage (max) and gain error less than 0.5% (max). Quiescent Low < 0.5% (max) Gain Error supply current is an ultra-low 1A. The MAX9634 fits in a tiny, 1mm x 1mm UCSP package size or a 5-pin Input Common Mode: +1.6V to +28V SOT23 package, making the part ideal for applications in Voltage Output notebook computers, cell phones, PDAs, and all battery- Four Gain Versions Available operated portable devices where accuracy, low quiescent 25V/V (MAX9634T) current, and small size are critical. 50V/V (MAX9634F) The MAX9634 features an input common-mode voltage 100V/V (MAX9634H) range from 1.6V to 28V. These current-sense amplifiers 200V/V (MAX9634W) have a voltage output and are offered in four gain ver- Tiny 1mm x 1mm x 0.6mm, 4-Bump UCSP or 5-Pin sions: 25V/V (MAX9634T), 50V/V (MAX9634F), 100V/V SOT23 Packages (MAX9634H), and 200V/V (MAX9634W). The four gain selections offer flexibility in the choice of Ordering Information the external current-sense resistor. The very low 250V PIN- GAIN TOP (max) input offset voltage allows small 25mV to 50mV PART PACKAGE (V/V) MARK full-scale V voltage for very low voltage drop at SENSE full-current measurement. MAX9634TERS+ 4 UCSP 25 +ABX The MAX9634 is offered in tiny 4-bump UCSP (1mm MAX9634FERS+ 4 UCSP 50 +ABY x 1mm x 0.6mm footprint) and 5-pin SOT23 packages MAX9634HERS+ 4 UCSP 100 +ABZ specified for operation over the -40C to +85C extended MAX9634WERS+ 4 UCSP 200 +ACA temperature range. MAX9634TEUK+ 5 SOT23 25 +AFHG Applications MAX9634FEUK+ 5 SOT23 50 +AFHH Cell Phones MAX9634HEUK+ 5 SOT23 100 +AFHI PDAs MAX9634WEUK+ 5 SOT23 200 +AFHJ Power-Management Systems +Denotes a lead(Pb)-free/RoHS-compliant package. Portable/Battery-Powered Systems Note: All devices are specified over the -40C to +85C Notebook Computers extended temperature range. UCSP is a trademark of Maxim Integrated Products, Inc. Pin Configurations TOP VIEW RS+ RS- (BUMPS ON BOTTOM) 5 4 RS+ A1 A2 RS- MAX9634T/F/H/W MAX9634T/F/H/W GND B1 B2 OUT 1 2 3 UCSP GND GND OUT SOT23 DRAWINGS NOT TO SCALE 19-5021 Rev 3 3/17MAX9634 nanoPower, 4-Bump UCSP/SOT23, Precision Current-Sense Amplifier Absolute Maximum Ratings RS+, RS- to GND ..................................................-0.3V to +30V Operating Temperature Range ........................... -40C to +85C OUT to GND ............................................................-0.3V to +6V Junction Temperature ......................................................+150C RS+ to RS- ..........................................................................30V Storage Temperature Range ............................ -65C to +150C Short-Circuit Duration: OUT to GND .........................Continuous Lead Temperature (soldering, 10s) .................................+300C Continuous Input Current (any pin) ..................................20mA Soldering Temperature (reflow) .......................................+260C Continuous Power Dissipation (T = +70C) A 4-Bump UCSP (derate 3.0mW/C above +70C) ........238mW 5-Pin SOT23 (derate 3.9mW/C above +70C) ..........312mW 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 ) = 0V, 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 = 5V, T = +25C 0.5 0.85 RS+ A V = 5V, -40C < T < +85C 1.1 RS+ A Supply Current (Note 2) I A CC V = 28V, T = +25C 1.1 1.8 RS+ A V = 28V, -40C < T < +85C 2.5 RS+ A Common-Mode Input Range V Guaranteed by CMRR, -40C < T < +85C 1.6 28 V CM A Common-Mode Rejection Ratio CMRR 1.6V < V < 28V, -40C < T < +85C 94 130 dB RS+ A T = +25C 100 250 MAX9634T/MAX9634F/ A MAX9634H -40C < T < +85C 300 A Input Offset Voltage (Note 3) V V OS T = +25C 100 250 A MAX9634W -40C < T < +85C 425 A MAX9634T 25 MAX9634F 50 Gain G V/V MAX9634H 100 MAX9634W 200 T = +25C 0.1 0.5 MAX9634T/MAX9634F/ A MAX9634H -40C < T < +85C 0.6 A Gain Error (Note 4) GE % T = +25C 0.1 0.7 A MAX9634W -40C < T < +85C 0.8 A MAX9634T/MAX9634F/MAX9634H 7.0 10 13.2 Output Resistance (Note 5) R k OUT MAX9634W 14.0 20 26.4 Gain = 25 1.5 7.5 Gain = 50 3 15 OUT Low Voltage V mV OL Gain = 100 6 30 Gain = 200 12 85 Maxim Integrated 2 www.maximintegrated.com