DRV8251A Series

50-V, 4.1-A H-bridge motor driver with integrated current regulation & current-sense feedback

Catalog

50-V, 4.1-A H-bridge motor driver with integrated current regulation & current-sense feedback

Part	Function	Interface	Applications	Mounting Type	Current - Output	Voltage - Supply [Max]	Voltage - Supply [Min]	Motor Type - AC, DC	Voltage - Load [Max]	Voltage - Load [Min]	Motor Type - Stepper	Supplier Device Package	Package / Case [y]	Package / Case [x]	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]	Technology	Output Configuration	Utilized IC / Part	Supplied Contents	Embedded	Primary Attributes [Max]	Primary Attributes [Min]	Contents	Type
Texas Instruments DRV8251ADDAR	Driver - Fully Integrated Control and Power Stage	PWM	Printer	Surface Mount	4.1 A	48 V	4.5 V	Brushed DC	48 V	4.5 V	Bipolar	8-SO PowerPad	3.9 mm	0.154 in	8-PowerSOIC	150 °C	-40 °C	NMOS	Half Bridge (2)
Texas Instruments DRV8251EVM	Motor Controller/Driver																			DRV8251	Board(s)	Yes MCU	48 V	4.5 V	Board(s)	Power Management
Texas Instruments DRV8251DDAR	Driver - Fully Integrated Control and Power Stage	PWM	Printer	Surface Mount	4.1 A	48 V	4.5 V	Brushed DC	48 V	4.5 V	Bipolar	8-SO PowerPad	3.9 mm	0.154 in	8-PowerSOIC	150 °C	-40 °C	Power MOSFET	Pre-Driver - Half Bridge (2)

Catalog

50-V, 4.1-A H-bridge motor driver with integrated current regulation & current-sense feedback

Key Features

• N-channel H-bridge brushed DC motor driver4.5-V to 48-V operating supply voltage rangePin-to-pin, RDS(on), voltage, and current sense/regulation variants (external shunt resistor and integrated current mirror)DRV8870: 6.5-V to 45-V, 565-mΩ, shuntDRV8251: 4.5-V to 48-V, 450-mΩ, shuntDRV8251A: 4.5-V to 48-V, 450-mΩ, mirrorDRV8231: 4.5-V to 33-V, 600-mΩ, shuntDRV8231A: 4.5-V to 33-V, 600-mΩ, mirrorHigh output current capability: 4.1-A PeakPWM control interfaceSupports 1.8-V, 3.3-V, and 5-V logic inputsIntegrated IPROPI current sensing for stall detection and current regulationLow-power sleep mode<1-µA at VVM= 24-V, TJ= 25°CSmall package and footprint8-Pin HSOP with PowerPAD™, 4.9 × 6.0 mmIntegrated protection featuresVM undervoltage lockout (UVLO)Auto-retry overcurrent protection (OCP)Thermal shutdown (TSD)N-channel H-bridge brushed DC motor driver4.5-V to 48-V operating supply voltage rangePin-to-pin, RDS(on), voltage, and current sense/regulation variants (external shunt resistor and integrated current mirror)DRV8870: 6.5-V to 45-V, 565-mΩ, shuntDRV8251: 4.5-V to 48-V, 450-mΩ, shuntDRV8251A: 4.5-V to 48-V, 450-mΩ, mirrorDRV8231: 4.5-V to 33-V, 600-mΩ, shuntDRV8231A: 4.5-V to 33-V, 600-mΩ, mirrorHigh output current capability: 4.1-A PeakPWM control interfaceSupports 1.8-V, 3.3-V, and 5-V logic inputsIntegrated IPROPI current sensing for stall detection and current regulationLow-power sleep mode<1-µA at VVM= 24-V, TJ= 25°CSmall package and footprint8-Pin HSOP with PowerPAD™, 4.9 × 6.0 mmIntegrated protection featuresVM undervoltage lockout (UVLO)Auto-retry overcurrent protection (OCP)Thermal shutdown (TSD)

Description

The DRV8251A device is an integrated motor driver with N-channel H-bridge, charge pump, current sense feedback, current regulation, and protection circuitry. The charge pump improves efficiency by supporting N-channel MOSFET half bridges and 100% duty cycle driving. An internal current mirror architecture on the IPROPI pin implements current sensing and regulation. This eliminates the need for a large power shunt resistor, saving board area and reducing system cost. The IPROPI current-sense output allows a microcontroller to detect motor stall or changes in load conditions. The external voltage reference pin, VREF, determines the threshold of current regulation during start-up and stall events without interaction from a microcontroller. A low-power sleep mode achieves ultra-low quiescent current draw by shutting down most of the internal circuitry. Internal protection features include supply undervoltage lockout, output overcurrent, and device overtemperature. The DRV8251A is part of a family of devices which come in pin-to-pin, scalable RDS(on)and supply voltage options to support various loads and supply rails with minimal design changes. See Section 5 for information on the devices in this family. View the full portfolio ofbrushed motor driverson ti.com. The DRV8251A device is an integrated motor driver with N-channel H-bridge, charge pump, current sense feedback, current regulation, and protection circuitry. The charge pump improves efficiency by supporting N-channel MOSFET half bridges and 100% duty cycle driving. An internal current mirror architecture on the IPROPI pin implements current sensing and regulation. This eliminates the need for a large power shunt resistor, saving board area and reducing system cost. The IPROPI current-sense output allows a microcontroller to detect motor stall or changes in load conditions. The external voltage reference pin, VREF, determines the threshold of current regulation during start-up and stall events without interaction from a microcontroller. A low-power sleep mode achieves ultra-low quiescent current draw by shutting down most of the internal circuitry. Internal protection features include supply undervoltage lockout, output overcurrent, and device overtemperature. The DRV8251A is part of a family of devices which come in pin-to-pin, scalable RDS(on)and supply voltage options to support various loads and supply rails with minimal design changes. See Section 5 for information on the devices in this family. View the full portfolio ofbrushed motor driverson ti.com.