EVALUATION KIT AVAILABLE MAX14874 4.5V to 36V Dual Relay/Valve/Motor Driver General Description Benefits and Features The MAX14874 dual push-pull driver provides a small Drive More Power and Reduce Footprint and simple solution for driving and controlling relays and Up to 2.5A Peak Motor Current valves with voltages between 4.5V and 36V. Flexible 4.5V36V Supply Enables Longer Runtime The MAX14874 is also designed to drive brushed DC Small 3mm x 3mm TDFN-EP Package motors. Separate COM pins allow monitoring of individual Low Power Dissipation Runs Cooler and Longer driver load currents. Peak currents up to 2.5A ensure for 480m (typ) Bridge On-Resistance PWM controlled large motor torque. Low driver on-resistance Simplified Designs Reduces Time to Market reduces power dissipation. Individual Current Sensing to Sense Voltages up The MAX14874 features a charge-pump-less design for to 1V reduced external components and low supply current. Charge-Pump-Less Architecture The MAX14874 features shoot-through protection and Independent Driver Control for Each Driver internal free-wheeling diodes that absorb inductive Integrated Protection Provides Robust Driving Solutions currents. Driver outputs are short-circuit protected against Thermal Shutdown Undervoltage Lockout shorts to the supply, and between M1 and M2. An Diagnostic FAULT Output active-low FAULT output signals thermal overload and -40C to +85C Temperature Range overcurrents during fault conditions. The MAX14874 is available in a 12-pin TDFN-EP (3mm x 3mm) package and operates over the -40C to +85C temperature range. Applications Valve and Relay Control Motor Control Ordering Information appears at end of data sheet. Coffee Machines Functional Diagram VDD M1 M2 VDD VDD EN1 EN2 DRIVER DRIVER IN1 IN2 FAULT FAULT DETECTION MAX14874 GND COM1 COM2 19-100010 Rev 0 4/17MAX14874 4.5V to 36V Dual Relay/Valve/Motor Driver Absolute Maximum Ratings (All voltages referenced to GND) Continuous Power Dissipation (T = +70C) A V ........................................................................-0.3V to +40V Multiple-Layer Board (derate at 24.4mW/C DD M1, M2 ....................................................... -0.3V to (V +0.3V) above +70C) ............................................................1951mW DD IN1, IN2, EN1, EN2, FAULT -0.3V to +6.0V Operating Temperature Range ........................... -40C to +85C ............................................. COM1, COM2 .......................................................-0.3V to +1.2V Junction Temperature ......................................................+150C Current Into M1, M2 .............................................................3A 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 ( ) Junction-to-Ambient Thermal Resistance ( ) JC JA TDFN-EP (Single-Layer Board) ..................................8.5C/W TDFN-EP (Single-Layer Board) ...................................63C/W TDFN-EP (Multiple-Layer Board) ...............................8.5C/W TDFN-EP (Multiple-Layer Board) ................................41C/W Note 2: 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 (V = 4.5V to 36V, T = T to T , unless otherwise noted. Typical values are at V = 12V, T = +25C)(Note 2) DD A MIN MAX DD A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS POWER SUPPLY Supply Voltage V 4.5 36 V DD switching at EN1 = EN2 = high, 1 50kHz Supply Current I M1/M2 not con- mA DD nected No switching 0.5 1.2 Undervoltage Lockout V V rising 3.3 3.8 4.3 V UVLO DD Threshold Undervoltage Lockout V 400 mV UVLO HYST Threshold Hysteresis DRIVER (M1, M2) T = 25C 280 395 Driver Output Resistance COM1 = COM2 = J R m ON (High-Side + Low-Side) GND, I = 2.5A T = 125C 410 580 M J Driver Overload Current Limit I 3 A M OL M1, M2 Leakage Current I EN = low V = 0V or V -1 +1 A M LKG M DD COM1, COM2 Voltage Range V -0.25 +1 V COM COM1, COM2 Off Leakage I EN = low, V = 0V or 1V, M COM LKG COM -3 0 A Current unconnected OFF COM1, COM2 On Leakage EN = high, IN = high or low, V COM I -3 0 A COM LKG ON Current = 0V or 1V, M unconnected Maxim Integrated 2 www.maximintegrated.com