MAX9644/MAX9645/ MAX9646 nanoPower Comparators with Precision Reference in 4-Bump UCSP General Description The MAX9644/MAX9645/MAX9646 are small, single comparators, ideal for a wide variety of portable electronics applications such as cell phones, media players, and notebooks that have extremely tight board space and power constraints. These comparators are offered in both a miniature 4-bump UCSPTM package with a 1mm x 1mm footprint (as small as two 0402 resistors) and a 5-pin SOT23 package. The ICs feature an input voltage range of -0.3V to +5.5V, independent of supply voltage. These devices maintain high impedance at the inputs even when powered down (VCC or VREF = 0V). They also feature internal filtering to provide high RF immunity. The ICs have an internal 0.2V reference. These devices feature either a push-pull or an open-drain output. They consume only 700nA (max) supply current and operate down to VCC = 1V over the extended -40C to +85C temperature range. Applications Cell Phones Portable Media Players Electronic Toys Notebook Computers Portable Medical Devices Benefits and Features Tiny, 1mm x 1mm x 0.6mm 4-Bump UCSP * Footprint = Two 0402 Resistors * Also Available in a 5-Pin SOT23 Package Ultra-Low Operating Current (700nA max) -0.3V to +5.5V Input Voltage Range Internal 0.2V Reference Trimmed to 1% Accuracy 15s Propagation Delay -40C to +85C Extended Temperature Range Ordering Information PIN-PACKAGE TOP MARK MAX9644EBS+G45 PART 4 UCSP +AGL MAX9644EUK+ 5 SOT23 +AFJN MAX9645EBS+G45 4 UCSP +AGM MAX9645EUK+ 5 SOT23 +AFJO MAX9646EBS+G45 4 UCSP +AGN MAX9646EUK+ 5 SOT23 +AFJP Note: All devices are specified over the extended -40C to +85C operating temperature range. +Denotes a lead(Pb)-free/RoHS-compliant package. G45 = Protective die coating. Selector Guide PART REFERENCE VOLTAGE (V) INPUT OUTPUT MAX9644 0.2 Noninverting Open-Drain MAX9645 0.2 Inverting Open-Drain MAX9646 0.2 Noninverting Push-Pull UCSP is a trademark of Maxim Integrated Products, Inc. 19-5803; Rev 2; 3/17 MAX9644/MAX9645/ MAX9646 nanoPower Comparators with Precision Reference in 4-Bump UCSP Absolute Maximum Ratings VCC, REF, IN to GND...............................................-0.3V to +6V OUT to GND (MAX9644/MAX9645).........................-0.3V to +6V OUT to GND (MAX9646 only)................ -0.3V to + (VCC + 0.3V) Output Short-Circuit Current Duration.................................... 10s Input Current into Any Terminal.........................................20mA Continuous Power Dissipation 4-Bump UCSP (derate 3.0mW/C above +70C).........238mW 5-Pin SOT23 (derate 3.9mW/C above +70C)............312mW Operating Temperature Range.............................-40C to +85C Junction Temperature....................................................... +150C Storage Temperature Range............................. -65?C to +150C Bump Temperature (soldering) Reflow............................. +235C 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. Electrical Characteristics (VCC = 3.3V, RPULLUP = 10k to VPULLUP = 3.3V for MAX9644/MAX9645, TA = -40C to +85C. Typical values at TA = +25C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS +5.5 V DC CHARACTERISTICS Input Voltage Range Input Bias Current Input Leakage Current Output Voltage Low Output Voltage High (MAX9464 Only) Output Leakage Current (MAX9644/MAX9645 Only) VIN Guaranteed by IIN test IIN VIN = 0.2V to 5.5V (Note 2) 0.06 15 nA VCC = 0V, VIN = 5.5V (Note 2) < 0.1 15 nA ISINK = 50A, VCC = 1.0V 0.03 0.2 ISINK = 200A, VCC = 1.2V 0.08 0.20 ISINK = 500A, VCC = 1.8V 0.13 0.23 IIN_SHDN VOL VOH IOUT_LEAKAGE -0.3 ISINK = 0.75mA, VCC = 3.3V 0.14 0.3 ISINK = 1.2mA, VCC = 5.5V 0.19 0.5 ISOURCE = 15A, VCC = 1.0V VCC 0.08V VCC - 0.2V ISOURCE = 40A, VCC = 1.2V VCC 0.08V VCC 0.20V ISOURCE = 180A, VCC = 1.8V VCC 0.15V VCC 0.23V ISOURCE = 0.3mA, VCC = 3.3V VCC 0.13V VCC - 0.3V ISOURCE = 0.75mA, VCC = 5.5V VCC 0.24V VCC - 0.5V OUT = high, VPULLUP = 5.5V (Note 2) < 0.1 15 V V nA AC CHARACTERISTICS Propagation Delay tPD VOVERDRIVE = 100mV (Note 3) 15 s Fall Time tF CL = 10pF 14 ns Rise Time tR CL = 10pF, MAX9646 only 30 ns REFERENCE VOLTAGE Input Threshold (Note 4) www.maximintegrated.com VREF MAX964_EBS+ 200 MAX964_EUK+ 199 mV Maxim Integrated 2 MAX9644/MAX9645/ MAX9646 nanoPower Comparators with Precision Reference in 4-Bump UCSP Electrical Characteristics (continued) (VCC = 3.3V, RPULLUP = 10k to VPULLUP = 3.3V for MAX9644/MAX9645, TA = -40C to +85C. Typical values at TA = +25C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL Input Threshold Error (Note 4) Delta-VREF Input Threshold Hysteresis VHYS REF Tempco CONDITIONS MIN TA = +25C TA = -40C to +85C TYP +1 -3.5 +3.5 TA = -40C to +85C (Note 5) VREF_TEMPCO (Note 6) Power-Supply Rejection Ratio PSRR VCC = 1.0V to 5.5V MAX -1 40 UNITS % 0.9 mV 6 V/C 53 dB POWER SUPPLY Supply Voltage VCC Supply Current ICC Power-Up Time tON Note Note Note Note Note Note 1: 2: 3: 4: 5: 6: Guaranteed by VOL/VOH tests 1.0 5.5 VCC = 1.0V 0.4 0.7 VCC = 5.5V 0.6 1.1 V A 3 ms All devices are 100% production tested at TA = +25C. Temperature limits are guaranteed by design. Too small to be measured in an ATE test environment. Only gross test to catch failures is implemented. Overdrive is defined as the voltage above or below the switching points. Guaranteed by ATE and/or bench characterization over temperature. VREF is the average of the trip points. Hysteresis is half the input voltage difference between the two switching points. Includes reference error along with comparator offset voltage error. Typical Operating Characteristics (VCC = 3.3V, VREF = 1.8V, RPULLUP = 10k to VPULLUP = 3.3V for MAX9644/MAX9645, VGND = 0V, TA = +25C, unless otherwise noted.) SUPPLY CURRENT vs. OUTPUT TRANSITION FREQUENCY +25C 600 400 10 VCC = 3.3V VCC = 1.8V 200 MAX9644 toc03 VCC = 5V 1.0 0.9 OUTPUT VOLTAGE LOW (V) +85C SUPPLY CURRENT (A) SUPPLY CURRENT (nA) 800 100 MAX9644 toc01 1000 OUTPUT VOLTAGE LOW vs. SINK CURRENT MAX9644 toc02 SUPPLY CURRENT vs. SUPPLY VOLTAGE 0.8 0.7 0.6 0.5 VREF = 5V 0.4 0.3 VREF = 3.3V 0.2 -40C 0 1 2 VREF = 1.8V 0.1 1 0 3 4 SUPPLY VOLTAGE (V) www.maximintegrated.com 5 6 0 0.1 1 10 OUTPUT TRANSITION FREQUENCY (kHz) 100 0 2 4 6 8 SINK CURRENT (mA) Maxim Integrated 3 MAX9644/MAX9645/ MAX9646 nanoPower Comparators with Precision Reference in 4-Bump UCSP Typical Operating Characteristics (continued) (VCC = 3.3V, VREF = 1.8V, RPULLUP = 10k to VPULLUP = 3.3V for MAX9644/MAX9645, VGND = 0V, TA = +25C, unless otherwise noted.) OUTPUT VOLTAGE HIGH vs. SOURCE CURRENT (MAX9646) 0.9 INPUT BIAS CURRENT (nA) 0.8 0.7 0.6 0.5 VCC = 5V 0.4 0.3 VCC = 3.3V 0.2 -5 -10 -15 VCC = 3.3V -20 0.5 1.0 1.5 2.0 2.5 3.0 0 0.05 0.10 0.15 0.20 0.25 SOURCE CURRENT (mA) INPUT BIAS VOLTAGE (V) REFERENCE VOLTAGE vs. TEMPERATURE REFERENCE VOLTAGE vs. SUPPLY VOLTAGE VCC = 3.3V 201.9 201.0 200.8 REFERENCE VOLTAGE (mV) 201.8 201.7 201.6 201.5 201.4 201.3 200.6 200.4 200.2 200.0 199.8 199.6 201.2 199.4 201.1 199.2 201.0 0.30 MAX9644 toc07 202.0 MAX9644 toc06 0 199.0 -15 10 35 60 85 1.0 1.5 2.0 2.5 3.0 3.5 4.0 TEMPERATURE (C) SUPPLY VOLTAGE (V) PROPAGATION DELAY vs. TEMPERATURE PROPAGATION DELAY vs. INPUT OVERDRIVE VOD = 100mV 16 15 VCC = 5V 14 13 VCC = 3.3V 12 VCC = 1.8V 11 10 4.5 80 70 PROPAGATION DELAY (s) 17 MAX9644 toc08 -40 5.0 MAX9644 toc09 REFERENCE VOLTAGE (mV) 0 VCC = 1.8V 0.1 0 PROPAGATION DELAY (s) MAX9644 toc05 5 MAX9644 toc04 OIUTPUT VOLTAGE HIGH (VCC - VOH, V) 1.0 INPUT BIAS CURRENT vs. INPUT BIAS VOLTAGE 60 50 VCC = 1.8V 40 VCC = 3.3V 30 VCC = 5V 20 10 9 0 -40 -15 10 35 TEMPERATURE (C) www.maximintegrated.com 60 85 0 50 100 150 200 250 INPUT OVERDRIVE (mV) Maxim Integrated 4 MAX9644/MAX9645/ MAX9646 nanoPower Comparators with Precision Reference in 4-Bump UCSP Typical Operating Characteristics (continued) (VCC = 3.3V, VREF = 1.8V, RPULLUP = 10k to VPULLUP = 3.3V for MAX9644/MAX9645, VGND = 0V, TA = +25C, unless otherwise noted.) MAX9644 toc10 202.0 VCC = 3.3V 201.9 REFERENCE VOLTAGE (mV) 0.3V IN+ 100mV/div 0.1V OUT 2V/div 0V MAX9644 toc11 REFERENCE VOLTAGE vs. TEMPERATURE PROPAGATION DELAY AT VCC = 3.3V 201.8 201.7 201.6 201.5 201.4 201.3 201.2 201.1 201.0 -40 100s/div -15 10 35 60 85 TEMPERATURE (C) OUTPUT RESPONSE TO SUPPLY VOLTAGE TRANSIENT POWER-UP/POWER-DOWN RESPONSE MAX9644 toc12 MAX9644 toc13 VIN = 0.3V VCC = 3.3V 3.2V 3V VCC 2V/div VIN = VTH + 1mV VCC 200mV/div OUT 2V/div 0V OUT 2V/div 0V VIN = VTH + 10mV 0V VIN = VTH + 20mV 0V OUT 2V/div OUT 2V/div 0V 1ms/div 1ms/div POWER-SUPPLY REJECTION FOR NO FALSE TRIGGERING MAX9644 toc14 206 TRIP POINT (mV) 204 202 UPPER TRIP POINT 200 198 LOWER TRIP POINT 196 VCC = 3.3V + 100mVP-P 194 10 100 1k 10k 100k 1M FREQUENCY (Hz) www.maximintegrated.com Maxim Integrated 5 MAX9644/MAX9645/ MAX9646 nanoPower Comparators with Precision Reference in 4-Bump UCSP Pin Configuration TOP VIEW (BUMPS ON BOTTOM) OUT A1 A2 IN MAX9644 MAX9645 MAX9646 VCC B1 B2 GND VCC 1 GND 2 GND 3 + 5 OUT 4 IN MAX9644 MAX9645 MAX9646 UCSP SOT23 Pin Description PIN NAME UCSP SOT23 A1 5 OUT A2 4 IN FUNCTION Comparator Output. The MAX9644/MAX9645 have open-drain outputs. The MAX9646 has a push-pull output. Comparator Input. The MAX9644/MAX9646 have noninverting inputs. The MAX9645 has inverting inputs. B1 1 VCC Power-Supply Voltage. Bypass to ground with a 0.1F bypass capacitor. B2 2, 3 GND Ground www.maximintegrated.com Maxim Integrated 6 MAX9644/MAX9645/ MAX9646 nanoPower Comparators with Precision Reference in 4-Bump UCSP Detailed Description Output Stage Structure The MAX9644/MAX9645/MAX9646 are extremely small comparators ideal for compact, low-current, and lowvoltage applications. The ICs consume only 400nA (typ). The low-voltage operating capability of the operating current makes these devices extremely attractive to long-life battery-operated devices--these applications can now use a single digital power-supply rail to power the new generation of microcontrollers (which can be down to 0.9V). All parts are available in a tiny 4-bump UCSP, which is only 0.6mm tall and occupies a 1mm x 1mm footprint and a 5-pin SOT23. Input Stage Circuitry Noninverting inputs are available on the MAX9644/ MAX9646 and inverting inputs are available on the MAX9645. The MAX9644/MAX9645/MAX9646 incorporate an innovative input stage architecture that allows their input voltage to exceed VCC by several volts (limited only by the Absolute Maximum Ratings). This is unlike traditional comparators that have an input ESD diode clamp between the input and VCC, limiting this maximum overvoltage to about 0.3V. The ICs architecture maintains a high input impedance to input signals even when the device powersupply voltage is completely turned off (VCC or REF taken to 0V). This greatly benefits flexible power-saving schemes to be easily implemented in advanced batteryoperated devices. On-chip filtering provides immunity from any RF noise being picked up by input traces. These devices feature an internal temperature-compensated, low-power 0.2V reference voltage The MAX9644/MAX9645 have open-drain outputs that allow them to interface to logic circuitry running from supply voltages other than the one supplied to the part. These devices require an external pullup resistor or current source for proper operation. Many microcontroller digital inputs ports can be readily programmed to include these. The MAX9646 has a push-pull output stage that can both sink and source current, eliminating the need for an external pullup resistor. In this case, the MAX9646 uses the microcontroller's power supply as VCC Applications Information Bypassing REF/VCC Place a 0.1F capacitor between REF or VCC and GND as close as possible to the device. During a switching event, all comparators draw a current spike from their power-supply rails. This current spike is minimized by the use of an internal break-before-make design. Hysteresis Operation The ICs feature internal hysteresis for noise immunity and glitch-free operation. If additional hysteresis is needed, an external positive feedback network can be easily implemented on the MAX9644 and MAX9646 noninverting input devices. Additional external hysteresis is not possible on the MAX9645 because the noninverting input of the comparator is not externally accessible. Table 1. How Devices Behave Under Various Input Voltage Conditions PART INPUT VOLTAGE CONDITIONS MAX9644 MAX9645 MAX9646 www.maximintegrated.com ACTION AT OUTPUT VIN > 0.2V External pullup resistor pulls output high. VIN < 0.2V Output asserts low. VIN > 0.2V Output asserts low. VIN < 0.2V External pullup resistor pulls output high. VIN > 0.2V Output asserts high. VIN < 0.2V Output asserts low. Maxim Integrated 7 MAX9644/MAX9645/ MAX9646 nanoPower Comparators with Precision Reference in 4-Bump UCSP Typical Operating Circuits VCC = 1.0V TO 5.5V 0.2V REF VDD VCC = 1.0V TO 5.5V INTERNAL PULLUP MAX9644 INTERNAL PULLUP MAX9645 0.2V REF OUT I/O IN VDD OUT I/O MICROCONTROLLER IN MICROCONTROLLER VCC = 1.0V TO 5.5V VDD 0.2V REF MAX9646 OUT I/O IN MICROCONTROLLER Chip Information PROCESS: BiCMOS www.maximintegrated.com Maxim Integrated 8 MAX9644/MAX9645/ MAX9646 nanoPower Comparators with Precision Reference in 4-Bump UCSP Package Information For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a "+", "#", or "-" in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE DOCUMENT NO. LAND PATTERN NO. 4 UCSP B4+1 21-0117 Refer to Application Note 1891 5 SOT23 U5+2 21-0057 90-0174 www.maximintegrated.com Maxim Integrated 9 MAX9644/MAX9645/ MAX9646 nanoPower Comparators with Precision Reference in 4-Bump UCSP Package Information (continued) For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a "+", "#", or "-" in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. www.maximintegrated.com Maxim Integrated 10 MAX9644/MAX9645/ MAX9646 nanoPower Comparators with Precision Reference in 4-Bump UCSP Revision History REVISION NUMBER REVISION DATE 0 3/14 Initial release -- 1 10/11 Updated Features section 1 2 3/17 Updated title to include "nanoPower" DESCRIPTION PAGES CHANGED 1-11 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated's website at www.maximintegrated.com. Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. (c) 2017 Maxim Integrated Products, Inc. 11 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Maxim Integrated: MAX9644EUK+T MAX9645EUK+T MAX9646EBS+TG45 MAX9646EUK+T