EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. 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 Input Common Mode: +1.6V to +28V in a tiny, 1mm x 1mm UCSP package size or a 5-pin 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) 100V/V (MAX9634H) The MAX9634 features an input common-mode voltage 200V/V (MAX9634W) range from 1.6V to 28V. These current-sense amplifiers 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 x MAX9634FERS+ 4 UCSP 50 +ABY 1mm x 0.6mm footprint) and 5-pin SOT23 packages. MAX9634HERS+ 4 UCSP 100 +ABZ MAX9634WERS+ 4 UCSP 200 +ACA Applications MAX9634TEUK+ 5 SOT23 25 +AFHG Cell Phones MAX9634FEUK+ 5 SOT23 50 +AFHH PDAs Power-Management Systems MAX9634HEUK+ 5 SOT23 100 +AFHI Portable/Battery-Powered Systems MAX9634WEUK+ 5 SOT23 200 +AFHJ Notebook Computers +Denotes a lead(Pb)-free/RoHS-compliant package. Note: All devices except for the MAX9634FEUK+ are specified UCSP is a trademark of Maxim Integrated Products, Inc. over the -40C to +85C extended temperature range. The MAX9634FEUK+ is specified over the -40C to +125C auto- motive temperature range. 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 6 7/21MAX9634 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 Operating Temperature Range (MAX9634FEUK+) RS+ to RS- ..........................................................................30V ...................................................................... -40C to +125C Short-Circuit Duration: OUT to GND .........................Continuous Junction Temperature ......................................................+150C Continuous Input Current (any pin) ..................................20mA Storage Temperature Range ............................ -65C to +150C Continuous Power Dissipation (T = +70C) Lead Temperature (soldering, 10s) .................................+300C A 4-Bump UCSP (derate 11.40mW/C above +70C) ... 915.23mW Soldering Temperature (reflow) .......................................+260C 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, T (MAX9634FEUK+) = -40C to +125C, unless otherwise RS+ RS- SENSE RS+ RS- A A noted. Typical values are at T = +25C.) (Note 1) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS V = 5V, T = RS+ A 0.5 0.85 +25C V = 5V, -40C < RS+ 1.1 T < +85C A MAX9634T/MAX9634H/ A MAX9634W V = 28V, T = RS+ A 1.1 1.8 +25C V = 28V, -40C < RS+ 2.5 T < +85C A Supply Current (Note 2) I CC V = 5V, T = RS+ A 0.5 0.85 +25C V = 5V, -40C < RS+ 1.1 T < +125C A MAX9634F V = 28V, T = RS+ A 1.1 1.8 +25C V = 28V, -40C < RS+ 2.5 T < +125C A MAX9634T/MAX9634H/ Guaranteed by CMRR, MAX9634W -40C < T < +85C A Common-Mode Input Range V 1.6 28 V CM Guaranteed by CMRR, MAX9634F -40C < T < +125C A MAX9634T/MAX9634H/ 1.6V < V < 28V, RS+ MAX9634W -40C < T < +85C A Common-Mode Rejection Ratio CMRR 94 130 dB 1.6V < V < 28V, RS+ MAX9634F -40C < T < +125C A Maxim Integrated 2 www.maximintegrated.com