Click here to ask about the production status of specific part numbers. MAX22201/MAX22202/ 36V, 3.5A Brushed Motor Driver with MAX22207 Integrated Current Sense General Description Benefits and Features The MAX22201/MAX22202/MAX22207 integrate one One Full H-Bridge with +36V Voltage Rating 36V, 3.5A peak full bridge capable of driving one brushed Total R (High Side + Low Side): 300m (typ) DS(ON) DC motor. The full bridge features very low impedance (T = +25C) A FETs with a typical R (high side + low side) of 0.3 re- Current Ratings (+25C typ) ON sulting in high driving efficiency. The peak current rating I = 3.5A PEAK of 3.5A is limited by the overcurrent protection threshold I = 2A RMS (OCP). The peak current is defined as the maximum cur- Configurable Current Drive Regulation (CDR) for rent the driver can provide for short transients. The maxi- Limiting Stall and Inrush Current mum RMS current is 2A and is typically limited by thermal Configurable Off Time (t ) for CDR (MAX22201 OFF considerations. The 2A capability refers to a standard RMS only) JEDEC 4-layer board at 25C ambient temperature. The Lossless Integrated Current Sensing (ICS) Eliminates real operating maximum current depends on the appli- External Bulky Resistors and Saves Power cation thermal characteristic (PCB ground planes, heat Current Sense Output (CSO) Function: A Replica of sinks, ventilation, etc.). the Internally Sensed Current is Output on the ISEN The MAX22201/MAX22202/MAX22207 feature a non-dis- Pin sipative and accurate integrated current sensing (ICS) and Current Drive Regulation Monitor (CDROUT) an embedded internal current drive regulation (CDR) cir- (MAX22207 only) cuit to monitor the current through a motor coil and limit Fault Indicator pin (FAULT) the peak output current. When the motor current exceeds Fully Integrated Charge Pump the current limit threshold, the full bridge enters a decay Protections mode for a fixed off time (t ). For brushed motor drive OFF Overcurrent Protection for Each Individual Channel applications, the current drive regulation guarantees safe (OCP) and reliable operation of the driver under normal condi- Undervoltage Lockout (UVLO) tions or during motor startup and stall conditions, and al- Thermal Shutdown (TSD) T = +165C so reduces system power and supply bypassing require- ESD Protection 8kV HBM (OUT1 and OUT2 Pins) ments. A scaled copy of the internally sensed current is Ultra-Small Package TDFN12 3mm x 3mm output to an external pin (ISEN). For more information on these features, refer to the Detailed Description. Ordering Information appears at end of datasheet. All versions feature overcurrent protection (OCP), thermal shutdown (TSD), and undervoltage lockout (UVLO). An open-drain active-low fault indication pin (FAULT) is acti- vated every time a fault condition is detected. The device is packaged into a tiny TDFN12 3mm x 3mm package. The small package footprint, the extremely high efficiency and the integrated accurate current sensing make the MAX22201/MAX22202/MAX22207 an excellent choice for space- and power-sensitive applications. Applications Brushed DC Motor Drive Stepper Motor Drive (One Phase Only) Latched Valves and Solenoids 19-100898 Rev 1 12/20MAX22201/MAX22202/ 36V, 3.5A Brushed Motor Driver with MAX22207 Integrated Current Sense Simplified Block Diagram V 18 GND VM CHARGE LDO PUMP VCP V M VCP OUT1 IN1/ GATE DRIVER AND ENBL OCP IN2/ PHASE BDCBDC VM VCP ROFF/ MODE/ GATE DRIVER AND CDROFF CONTROL-LOGIC MAXBDC2MAXBDC2 OCP OUT2 AND LEVEL SHIFTERS22A BDCA BDC INTEGRATED CURRENT SENSE PROTECTION OCP FAULT UVLO CURRENT- THERMAL DRIVER SHUTDOWN REGULATION CONTROL ILIM ISEN GND www.maximintegrated.com Maxim Integrated 2