EVALUATION KIT AVAILABLE MAX14870/MAX14872 Compact 4.5V to 36V Full-Bridge DC Motor Drivers General Description Benefits and Features Small Package Handles High Power and Reduces Footprint Circuit Size * Up to 2.5A Peak Motor Current * Space-Saving TDFN-EP (3mm x 3mm) Package * Flexible 4.5V-36V Supply Enables Longer Runtime on Batteries Low Power Consumption Runs Cooler and Longer * 280mW (typ) Total Bridge On-Resistance * 1mA (typ) Supply Current at 30kHz/24V * 10A (max) Standby Current at 12V Simplified Designs Reduces Time to Market * Charge-Pump-Less Architecture * Current Regulation Only Requires a Sense Resistor * Current-Sense Input Simplifies PCB Layout Integrated Protection Provides Robust Driving Solution * Short-Circuit-Protected Drivers * Thermal-Shutdown Undervoltage Lockout * Diagnostic FAULT Output * -40C to +85C Temperature Range The MAX14870/MAX14872 motor drivers provide a small, low-power and simple solution for driving and controlling brushed DC motors and relays with voltages between 4.5V and 36V. Very low driver on-resistance reduces power dissipation. These drivers feature a charge-pump-less design for reduced external components and low supply current. Integrated fast-decay current regulation allows useradjustable peak startup motor currents and requires minimal external components. A separate voltage-sense input (SNS) reduces current sensing errors due to parasitic trace resistance. The MAX14870/MAX14872 features shoot-through protection and internal free-wheeling diodes that absorb inductive motor currents. Driver outputs are short-circuit-protected from shorts to ground, to the supply, and between M1 and M2. An active-low FAULT output signals thermal overload and overcurrents during fault conditions. The MAX14870 has PWM and direction-control inputs, while the MAX14872 has forward and reverse inputs for direction control. See the Function Tables. Applications Printers and Scanners Relay Drivers Vending and Gaming Machines The MAX14870/MAX14872 are available in a 12-pin (3mm x 3mm) TDFN-EP package and operate over the -40C to +85C temperature range. Ordering Information appears at end of data sheet. Typical Application Circuit 24V M 3.3V VDD M1 M2 3.3V IRQ C MAX14870 MAX14872 FAULT VDD DIR+ VDD GPO PWM PWM+ DRIVER EN DRIVER CURRENT REGULATION SNS GND COM RSENSE + THESE PIN NAMES ARE FOR THE MAX14870. ON THE MAX14872, THESE ARE THE FWD AND REV INPUTS. 19-7062; Rev 1; 6/17 MAX14870/MAX14872 Compact 4.5V to 36V Full-Bridge DC Motor Drivers Absolute Maximum Ratings (All voltages referenced to GND.) VDD.........................................................................-0.3V to +40V M1, M2...................................................... -0.3V to (VDD + 0.3V) PWM, DIR, FWD, REV, FAULT, EN, SNS ...........-0.3V to +6.0V COM......................................................................-0.3V to +0.3V Continuous Current Into M1, M2 ...........................................3A Continuous Power Dissipation (TA = +70C) Single-Layer Board (derate at 15.9mW/C above +70C)...........................................................1270mW Multilayer Board (derate at 24.4mW/C above +70C)...........................................................1951mW Operating Temperature Range............................ -40C to +85C Junction Temperature....................................................... +150C Storage Temperature Range..............................-65C to +150C Lead Temperature (soldering, 10s) ................................. +300C Solder 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. Package Thermal Characteristics (Note 1) Junction-to-Case Thermal Resistance (JC) TDFN-EP (Single-Layer Board)...................................8.5C/W TDFN-EP (Multilayer Board)........................................8.5C/W Junction-to-Ambient Thermal Resistance (JA) TDFN-EP (Single-Layer Board)....................................63C/W TDFN-EP (Multilayer Board).........................................41C/W Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Electrical Characteristics (VDD = 4.5V to 36V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VDD = 12V, TA = +25C) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 36 V POWER SUPPLY Supply Voltage VDD Supply Current IDD EN = low, M1/M2 not connected Shutdown Supply Current ISHDN EN = high, driver is in shutdown Undervoltage Lockout Threshold VUVLO VDD rising Undervoltage Lockout Threshold Hysteresis VUVLO_HYST www.maximintegrated.com 4.5 fPWM/FWD = 50kHz 1 No switching 0.5 1.2 VDD = 12V 3.7 10 VDD = 36V 10 20 3.8 4.3 3.3 400 mA A V mV Maxim Integrated 2 MAX14870/MAX14872 Compact 4.5V to 36V Full-Bridge DC Motor Drivers Electrical Characteristics (continued) (VDD = 4.5V to 36V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VDD = 12V, TA = +25C) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX TJ = +25C 280 395 TJ = +125C 410 580 UNITS DRIVER (M1, M2) Driver Output Resistance (High Side + Low Side) Driver Overload Current Limit M1, M2 Leakage Current M1, M2 Body Diode Forward-Voltage RON IM_ = 2.5A IM_OL IM_LKG VBF 3 EN = High, VM1 = VM2 = 0V or VDD m A -1 +1 Low-side diode, EN = high, IF = 2.5A 1.5 High-side diode, EN = high, IF = 2.5A 1.5 A V CURRENT REGULATION (SNS, COM) SNS Current Sense Threshold VSNS_TH VSNS rising (Note 3) 94 SNS Input Leakage Current ISNS_LKG VSNS = 250mV COM Leakage Current 110 mV -1 +1 A ICOM_LKG EN = high, VCOM = 250mV -1 +1 A 2 LOGIC SIGNALS (PWM, DIR, FWD, REV, EN, FAULT) Input Logic-High Voltage VIH FWD, REV, PWM, DIR Input Logic-Low Voltage VIL FWD, REV, PWM, DIR EN Input Logic-High Voltage VEN_IH EN Input Logic-Low Voltage VEN_IL Input Leakage Current IIL 100 V 0.8 V 1.6 0.4 PWM, DIR, FWD, REV, EN, VINPUT = 5.5V or 0V FAULT Output Low Voltage VOL FAULT Off Leakage Current IF_LKG FAULT deasserted, VFAULT = 5.5V Thermal-Shutdown Threshold TSHDN Temperature rising, FAULT asserted Thermal-Shutdown Hysteresis TSHDN_HYST -1 FAULT asserted, ISINK = 5mA -1 +1 A 0.5 V +1 A PROTECTION www.maximintegrated.com +160 C 10 C Maxim Integrated 3 MAX14870/MAX14872 Compact 4.5V to 36V Full-Bridge DC Motor Drivers AC Electrical Characteristics (VDD = 4.5V to 36V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VDD = 12V, TA = +25C) (Note 2) PARAMETER PWM Frequency Dead Time SYMBOL fSW CONDITIONS MAX14870, switching signal applied at PWM EN = low MIN TYP MAX UNITS 50 kHz MAX14872, switching signal applied at FWD or REV 50 tDEAD 140 ns M1, M2 Slew Rate SR 200 V/s M1, M2 High-Side Propagation Delay tPR RL = 1k, CL = 50pF, PWM/FWD/DIR/REV rising, Figure 1 620 ns M1, M2 Low-Side Propagation Delay tPF RL = 1k, CL = 50pF, PWM/FWD/DIR/REV falling, Figure 1 583 ns Current Regulation Fixed Off-Time tOFF PWM/FWD = high, EN = low, VSNS > VSNS_TH Current Regulation Minimum On-Time tCR_BL PWM/FWD = high, EN = low, VSNS > VSNS_TH Overcurrent Blanking Time tOC_BL Overcurrent Autoretry Timeout 7.8 15 22 s 2.5 s M1/M2 is shorted to VDD or GND, Figure 2 1 s tOC_TO PWM/FWD = high, EN = low, IM or IM2 > IM_OL, Figure 2 2 ms Enable Turn-On Delay tEN_ON PWM/FWD = high, RL = 1k, CL = 50pF, EN falling, M1/M2 rising to 10%, Figure 3 23 s Enable Turn-Off Delay tEN_OFF PWM/FWD = high, RL = 1k, CL = 50pF, EN rising, M1/M2 falling to 90%, Figure 3 50 s Note 2: All units are production tested at TA = +25C. Specifications over temperature are guaranteed by design. Note 3: VSNS_TH is the threshold voltage to turn on current regulation. www.maximintegrated.com Maxim Integrated 4 MAX14870/MAX14872 Compact 4.5V to 36V Full-Bridge DC Motor Drivers Test Circuits/Timing Diagrams M1/ M2 RL CL VL PWM/DIR FWD/REV 0V 1V VDD M1/M2 1V 0V tPF tPR Figure 1. M1/M2 Propagation Delay IM1 or IM2 IM_OL 0A tOC_BL VL FAULT 0V tOC_TO Figure 2. Overcurrent Autoretry Timeout www.maximintegrated.com Maxim Integrated 5 MAX14870/MAX14872 Compact 4.5V to 36V Full-Bridge DC Motor Drivers Test Circuits/Timing Diagrams (continued) M1/M2 RL EN CL 1.5V 1.5V tEN_ON VL 0V tEN_OFF VDD 90% M1/M2 10% 0V Figure 3. Enable/Disable Delays www.maximintegrated.com Maxim Integrated 6 MAX14870/MAX14872 Compact 4.5V to 36V Full-Bridge DC Motor Drivers Typical Operating Characteristics (VDD = 12V, TA = +25C, unless otherwise noted.) HIGH-SIDE ON-RESISTANCE vs. LOAD CURRENT 0.30 LOW-SIDE ON-RESISTANCE vs. LOAD CURRENT 0.20 toc02 VDD = 4.5V VDD = 36V 0.10 ON-RESISTANCE () ON-RESISTANCE () 0.15 0.30 VDD = 4.5V 0.14 0.12 0.10 VDD = 36V 0.08 0.06 0.04 0.05 0 1000 2000 3000 0.15 0.10 LOW SIDE 0 1000 2000 -45 3000 toc04 SUPPLY CURRENT vs. SWITCHING RATE 1.6 VDD = 36V 1.4 -20 5 30 55 80 105 130 TEMPERATURE (C) LOAD CURRENT (mA) SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE 10 0.20 0.00 0.00 LOAD CURRENT (mA) 12 HIGH SIDE 0.25 0.05 0.02 0.00 toc03 ILOAD = 1A 0.35 0.16 0.20 ON-RESISTANCE vs. TEMPERATURE 0.40 0.18 0.25 ON-RESISTANCE () toc01 toc05 LOW-SIDE M1/M2 BODY DIODE FORWARD-VOLTAGE vs. LOAD 1.2 VDD = 36V toc06 1.0 1.2 6 VDD = 24V 1.0 0.8 VBF (V) VDD = 24V ICC (mA) ISHDN (A) 8 0.8 0.6 4 VDD = 4.5V VDD = 5V -30 -15 0 15 30 45 60 75 90 TA = 85C 0.2 C L = 10pF on M1/M2 0.0 -45 TA = 25C 0.4 0.2 0 TA = -40C VDD = 12V 0.4 2 0.6 0 TEMPERATURE (oC) 5 10 15 20 0.0 25 30 35 40 45 50 HIGH-SIDE M1/M2 BODY DIODE FORWARD-VOLTAGE vs. LOAD 1.2 0 1 2 3 LOAD CURRENT (A) DATA RATE (kHz) toc07 1.0 VBF (V) 0.8 TA = 25C 0.6 TA = 85C TA = -40C 0.4 0.2 0.0 0 1 2 3 LOAD CURRENT (A) www.maximintegrated.com Maxim Integrated 7 MAX14870/MAX14872 Compact 4.5V to 36V Full-Bridge DC Motor Drivers Pin Configuration TOP VIEW 11 M2 M1 2 10 VDD VDD 3 9 GND SNS 4 5 8 EN FWD 6 7 FAULT REV M1 2 VDD 3 SNS 4 PWM DIR 12 COM EP* MAX14870 + 1 1 + COM COM EP* MAX14872 12 COM 11 M2 10 VDD 9 GND 5 8 EN 6 7 FAULT TDFN-EP 3mm x 3mm *EP = EXPOSED PAD. CONNECT TO GROUND. Pin Description PIN MAX14870 MAX14872 NAME FUNCTION COM Current Output. Connect a sense resistor (RSENSE) from COM to GND to use internal current regulation and/or external current control. Connect both COM pins together. 1, 12 1, 12 COM 2 2 M1 Motor Driver Output 1. See the MAX14870 Function Table and MAX14872 Function Table for more information. 3, 10 3, 10 VDD Power Supply Input. Bypass VDD to GND with a 1F ceramic capacitor as close to the device as possible. Connect both VDD pins together. 4 4 SNS Current Sense Input. Connect SNS to COM to enable current regulation. To bypass current regulation, connect SNS to GND. 5 -- PWM PWM Control Logic Input. PWM and DIR control M1 and M2 on the MAX14870. See the MAX14870 Function Table and MAX14872 Function Table for more information. 6 -- DIR Direction Control Logic Input. PWM and DIR control M1 and M2 on the MAX14870. See the MAX14870 Function Table and MAX14872 Function Table for more information. -- 5 FWD Forward Control Logic Input. FWD and REV control M1 and M2 on the MAX14872. See the MAX14870 Function Table and MAX14872 Function Table for more information. -- 6 REV Reverse Control Logic Input. FWD and REV control M1 and M2 on the MAX14872. See the MAX14870 Function Table and MAX14872 Function Table for more information. www.maximintegrated.com Maxim Integrated 8 MAX14870/MAX14872 Compact 4.5V to 36V Full-Bridge DC Motor Drivers Pin Description (continued) PIN MAX14870 MAX14872 NAME FUNCTION Open-Drain Active-Low Fault Output. FAULT goes low during an overcurrent condition and thermal shutdown. 7 7 FAULT 8 8 EN 9 9 GND 11 11 M2 Motor Driver Output 2. See the MAX14870 Function Table and MAX14872 Function Table for more information. -- -- EP Exposed Pad. Connect to ground. Active-Low Enable Input. Drive EN low to enable the driver outputs. Drive EN high to three-state the driver outputs. The device is in shutdown when EN is high. Ground MAX14870 Function Table INPUTS OUTPUTS OPERATING MODE EN VSNS PWM DIR M1 M2 1 X X X High impedance High impedance 0 < VSNS_TH 0 X GND GND Brake 0 < VSNS_TH 1 0 GND VDD Counterclockwise/reverse 0 < VSNS_TH 1 1 VDD GND Clockwise/forward 0 > VSNS_TH 1 0 Switching Switching Current regulation 0 > VSNS_TH 1 1 Switching Switching Current regulation Shutdown X = Don't care. MAX14872 Function Table INPUTS OUTPUTS OPERATING MODE EN VSNS FWD REV M1 M2 1 X X X High impedance High impedance Shutdown 0 < VSNS_TH 0 0 GND GND Brake 0 < VSNS_TH 1 0 VDD GND Forward 0 < VSNS_TH 0 1 GND VDD Reverse 0 < VSNS_TH 1 1 High impedance High impedance Three-state 0 > VSNS_TH 1 0 Switching Switching Current regulation 0 > VSNS_TH 0 1 Switching Switching Current regulation X = Don't care. www.maximintegrated.com Maxim Integrated 9 MAX14870/MAX14872 Compact 4.5V to 36V Full-Bridge DC Motor Drivers Functional Diagrams EN M2 M1 VDD VDD VDD PWM DRIVER DIR DRIVER FAULT CURRENT REGULATION MAX14870 COM SNS GND RSENSE EN M2 M1 VDD VDD VDD REV DRIVER FWD DRIVER FAULT CURRENT REGULATION SNS MAX14872 COM GND RSENSE www.maximintegrated.com Maxim Integrated 10 MAX14870/MAX14872 Detailed Description The MAX14870/MAX14872 DC brushed motor drivers provide a low-power and flexible solution for driving and controlling brushed motors with voltages between 4.5V and 36V. Peak motor currents of up to 2.5A ensure large motor torque that is controllable by an external PWM signal and/or by autonomous internal current regulation. The MAX14870 has PWM and direction-control inputs, while the MAX14872 has forward and reverse inputs for direction control. See the MAX14870 Function Table and MAX14872 Function Table. Charge-pump-less design requires minimal external components and low supply current. Integrated current regulation allows limiting peak startup motor currents. Shoot-through protection with a 140ns (typ) dead time ensures low operating current. Internal free-wheeling diodes absorb inductive motor currents. The FAULT output signals thermal overload and overcurrents. Overcurrent Protection The MAX14870/MAX14872 are protected against shorts on M1/M2 to any voltage between VDD and GND, including shorts to GND, VDD, and between M1 and M2 via overcurrent limiting. When a current above 6A (typ) flows through M1 or M2 for longer than 1s, an overcurrent condition is detected and the H-bridge drivers are automatically disabled and the FAULT output asserts. If the overcurrent condition continues for longer than the overcurrent autoretry timeout (2ms (typ)) the MAX14870/ MAX14872 enters autoretry mode. In autoretry mode, the M1 and M2 outputs are re-enabled for 1s (typ) and FAULT goes high-impedance. The drivers are disabled again and FAULT is re-asserted if the overcurrent condition persists. PWM Control (MAX14870 Only) The PWM input is used for motor speed/torque control. Increasing or decreasing the duty cycle at PWM sets the effective (average) voltage across the motor terminals and allows first-order speed control. When PWM is logic-high, the motor is driven in the direction defined by DIR. When PWM is logic-low, the bridge is in brake mode. In brake mode, the motor current www.maximintegrated.com Compact 4.5V to 36V Full-Bridge DC Motor Drivers continues flowing and recirculates through the low-side transistors of the H-bridge driver, due to its inductive impedance and back EMF. FWD/REV Control (MAX14872 only) The FWD input is used to drive the motor forward/turn a relay on. The REV input reverses the M1 and M2 polarity, to drive the motor in reverse/turn a relay off. FWD/REV control can be optionally used to implement either bipolar motor control (with both M1 and M2 switching) or unipolar control, where only M1 or M2 switches. Slope Control The MAX14871 drivers turn-on and turn-off with active slope-control during the M1/M2 transition times. The integrated slew rate-limiting reduces EMC (like conducted and radiated EMI) associated with high di/dt rates. Thermal Shutdown The MAX14870/MAX14872 include integrated protection against thermal overload. When the junction temperature exceeds 160C (typ), the H-bridge is three-stated, M1 and M2 are disabled, and FAULT is asserted. If the motor was spinning before thermal shutdown occurred, the motor's inductance will push current through the internal M1 and M2 diodes, forcing the motor into fast decay, with a voltage across its terminals of VDD. M1 and M2 are automatically reenabled when the junction temperature falls to 150C (typ). Current Sensing Connect a sense resistor (RSENSE) between COM and GND to monitor the motor current during operation. Select RSENSE such that the voltage at COM created by motor current flowing through the sense resistor is limited to within 250mV relative to GND (-250mV VCOM +250mV). Minimize series trace resistance from RSENSE to GND to minimize voltage sense errors due to parasitic trace interconnect resistance. Use a star ground connection between the MAX14870/MAX14872 GND pins and the GND-side of RSENSE. Connect the voltage sense close to the RSENSE resistor and/or use differential voltage sensing. See Figure 4. Maxim Integrated 11 MAX14870/MAX14872 GND Compact 4.5V to 36V Full-Bridge DC Motor Drivers VDD VDD COM M2 COM GND M1 1 RSENSE To SNS Figure 4. Layout Example for Accurate Current Sensing Current Regulation The MAX14870/MAX14872 features internal current regulation to limit the startup current. Regulation is set when the motor current (IM) exceeds the current limit defined by the sense resistor (RSENSE): IM_MAX = 0.1V/RSENSE When the motor current exceeds the maximum threshold, the H-bridge drive is reversed for fast decay for a fixed time (tOFF = 15s). The H-bridge is turned back to normal operation after tOFF. Fast Decay Mode When the motor current exceeds the set threshold, the H-bridge polarity is reversed during the 15s (typ) tOFF period. This results in faster motor current decay since -VDD is applied across the motor's terminals. The motor current decrease is first order with an L/R time constant and proportional to (VDD + VEMF). Note that if tOFF is larger than the motor's L/R electrical time constant, the motor current can reverse direction, causing the motor to not start. www.maximintegrated.com During fast decay, the motor's inductive current recirculates through the external VDD supply, which charges up the VDD bypass capacitor. Therefore, the voltage seen across RSENSE is negative during the tOFF delay. Applications Information Layout Considerations Connect duplicate pins (COM pins and VDD pins) together with low-resistance traces. See the Current Sensing section for further layout recommendations. Power Considerations The MAX14870/MAX14872 driver can generate more power than the package for the device can safely dissipate. Total power dissipation for the device is calculated using the following equation: PTOTAL = PDRIVER + PSW + PD The power dissipated inside of the driver is calculated as: PDRIVER = IM2 x RON Maxim Integrated 12 MAX14870/MAX14872 Compact 4.5V to 36V Full-Bridge DC Motor Drivers Operation with External Current Regulation where IM is the motor current and RON is the on-resistance of the high and low-side FETs. The motor current can be controlled by external PWM regulation using sense resistor feedback in a control loop. To disable the internal current regulation circuitry of the MAX14870/MAX14872 and use external regulation, connect SNS directly to ground. PSW is the power generated by the driver during the rise/ fall times in switching and includes both arms of the bridge. Calculate PSW using the following equation: PSW = IM x 2 x VDS Note that, if fast decay control is used, the COM voltage pulses negatively when the H-bridge direction is inverted. = IM x 2 x (1/2 x VDD x fSW x tR) where IM is the motor current, tR is the 200ns (typ) rise or fall time of the driver output, and fSW is the switching frequency. Use of External Capacitors Maxim does not recommend using external capacitors across the motor terminals. Added capacitance between H-bridge outputs increases the power dissipated in the H-bridge by: The internal diodes dissipate power during switching, as well. Calculate the power dissipated in the diodes as: PD = IM x 2 x VBF x tDEAD x fSW PD = VDD2 x C x fSW where C is the capacitance across M1/M2 and fSW is the M1/M2 switching frequency. This power is dissipated without good reason. Operation Without Current Regulation To operate the MAX14870/MAX14872 without internal or external current regulation, connect SNS directly to GND. No sense resistor is required for this configuration. 9V M 3.3V M1 VDD M2 3.3V MAX14870 MAX14872 VUVLO IRQ GPO PWM FAULT VDD VDD DIR* DRIVER PWM* EN C DRIVER CURRENT REGULATION ADC SNS A GND COM RSENSE *THESE PIN NAMES ARE FOR THE MAX14870. ON THE MAX14872, THESE ARE THE FWD AND REV INPUTS. Figure 5. Operation with External Current Regulation www.maximintegrated.com Maxim Integrated 13 MAX14870/MAX14872 Compact 4.5V to 36V Full-Bridge DC Motor Drivers Package Information Ordering Information PART TEMP RANGE PIN-PACKAGE MAX14870ETC+ -40C to +85C 12 TDFN-EP MAX14872ETC+ -40C to +85C 12 TDFN-EP +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad. 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 OUTLINE NO. LAND PATTERN NO. 12 TDFN-EP TD1233+1 21-0664 90-0397 Chip Information PROCESS: BiCMOS www.maximintegrated.com Maxim Integrated 14 MAX14870/MAX14872 Compact 4.5V to 36V Full-Bridge DC Motor Drivers Revision History REVISION NUMBER REVISION DATE PAGES CHANGED 0 9/14 Initial release 1 6/17 Modified Figure 4, deleted TOC 10, and edited Pin Description table DESCRIPTION -- 7, 9, 12 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. 15 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Maxim Integrated: MAX14872ETC+T MAX14870ETC+T