Details, datasheet, quote on part number: MAX9634TERS+T

New devices of today and tomorrow demand more functionality, but extending battery life and shelf life is also critical. Maxim's nanoPower technology products offer the ability to lower quiescent current (IQ) of a power supply, which is the biggest contributor to a system’s standby power consumption. Lowering the IQ is one of the most effective techniques for delivering the most efficient power and longest battery life to a design. Engineers need to master the art of low quiescent current in wearables, health-monitoring, Internet of Things (IoT), mobile, and other smart, connected devices. Maxim’s nanoPower technology can help engineers with their designs by incorporating ICs that consume less than a microamp of quiescent current and is offered in a small solution size that can result in a 50% space savings. Current offerings in nanoPower technology include regulators, amplifiers, and supervisors.

CompanyMaxim Integrated Products
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Features, Applications

o Ultra-Low Supply Current of 1A (max) o Low 250V (max) Input Offset Voltage o Low < 0.5% (max) Gain Error o Input Common Mode: +28V o Voltage Output o Four Gain Versions Available (MAX9634W) o Tiny 0.6mm, 4-Bump UCSP 5-Pin SOT23 Packages

The MAX9634 high-side current-sense amplifier offers precision accuracy specifications V OS less than 250V (max) and gain error less than 0.5% (max). Quiescent supply current is an ultra-low 1A. The MAX9634 fits in a tiny, x 1mm UCSPTM package size 5-pin SOT23 package, making the part ideal for applications in notebook computers, cell phones, PDAs, and all battery-operated portable devices where accuracy, low quiescent current, and small size are critical. The MAX9634 features an input common-mode voltage range from to 28V. These current-sense amplifiers have a voltage output and are offered in four gain versions: 100V/V (MAX9634H), and 200V/V (MAX9634W). The four gain selections offer flexibility in the choice of the external current-sense resistor. The very low 250V (max) input offset voltage allows small to 50mV full-scale VSENSE voltage for very low voltage drop at full-current measurement. The MAX9634 is offered in tiny 4-bump UCSP x 0.6mm footprint) and 5-pin SOT23 packages specified for operation over the to +85C extended temperature range.


Cell Phones PDAs Power-Management Systems Portable/Battery-Powered Systems Notebook Computers

+Denotes a lead(Pb)-free/RoHS-compliant package. Note: All devices are specified over the to +85C extended temperature range.

UCSP is a trademark of Maxim Integrated Products, Inc.

For pricing, delivery, and ordering information, please contact Maxim Direct 1-888-629-4642, or visit Maxim's website at

RS+, RS- to +30V OUT to +6V RS+ to RS-...........................................................................30V Short-Circuit Duration: OUT to GND..........................Continuous Continuous Input Current (any pin)..................................20mA Continuous Power Dissipation (TA +70C) 4-Bump UCSP (derate 3.0mW/C above 5-Pin SOT23 (derate 3.9mW/C above +70C)............312mW Operating Temperature to +85C Junction Temperature......................................................+150C Storage Temperature to +150C Lead Temperature (soldering, 10s).................................+300C Soldering Temperature (reflow).......................................+260C

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.

(VRS+ = VRS- = 3.6V, VSENSE = (VRS+ - VRS-) to +85C, unless otherwise noted. Typical values are = +25C.) (Note 1)

PARAMETER SYMBOL CONDITIONS VRS+ = +25C Supply Current (Note 2) ICC VRS+ < +85C VRS+ = +25C VRS+ < +85C Common-Mode Input Range Common-Mode Rejection Ratio VCM CMRR Guaranteed by CMRR, 1.6V < VRS+ MAX9634T/MAX9634F/ MAX9634H Input Offset Voltage (Note 3) VOS MAX9634W MAX9634T Gain MAX9634T/MAX9634F/ MAX9634H Gain Error (Note GE MAX9634W Output Resistance (Note 5) ROUT < +85C V/V V 1.1 MIN TYP 0.5 MAX dB A UNITS

(VRS+ = VRS- = 3.6V, VSENSE = (VRS+ - VRS-) to +85C, unless otherwise noted. Typical values are = +25C.) (Note 1)

PARAMETER OUT High Voltage SYMBOL VOH CONDITIONS VOH = VRS- - VOUT (Note 6) VSENSE = 50mV, gain = 25 Small-Signal Bandwidth (Note 5) VSENSE = 50mV, gain 50 BW VSENSE = 50mV, gain = 100 VSENSE = 50mV, gain = 200 Output Settling Time tS 1% final value, VSENSE = 50mV MIN TYP s kHz MAX 0.2 UNITS V

All devices are 100% production tested = +25C. All temperature limits are guaranteed by design. VOUT = 0. ICC is the total current into RS+ plus RS- pins. VOS is extrapolated from measurements for the gain-error test. Gain error is calculated by applying two values of VSENSE and calculating the error of the slope vs. the ideal: Gain = 25, VSENSE is 20mV and 120mV. Gain = 50, VSENSE is 10mV and 60mV. Gain = 100, VSENSE is 5mV and 30mV. Gain = 200, VSENSE is 2.5mV and 15mV. Note 5: The device is stable for any external capacitance value. Note 6: VOH is the voltage from VRS- to VOUT with VSENSE = 3.6V/gain.


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