DRV8256PPWPR

The DRV8256E/P devices are single H-bridge motor
drivers for a wide variety of industrial applications.
The devices integrate an N-channel H-bridge, charge
pump regulator, current sensing and regulation, and
protection circuitry.
Integrated current sensing allows the driver to
regulate the motor inrush current during start up
and high load events. A current limit can be set
with an adjustable external voltage reference. The
integrated current sensing uses an internal current
mirror architecture, removing the need for a large
power shunt resistor, saving board area and reducing
system cost. A low-power sleep mode is provided to
achieve ultra-low quiescent current draw by shutting
down most of the internal circuitry.
Internal protection features are provided for
supply undervoltage lockout (UVLO), charge pump
undervoltage (CPUV), output overcurrent (OCP), and
device overtemperature (TSD). Fault conditions are
indicated on nFAULT.

Categories: Controllers, Power Management (PMIC)

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SPECIFICATION

• N-channel H-bridge motor driver
– Drives one bidirectional brushed-DC motor
– Two unidirectional brushed DC motors
• Integrated current sensing and regulation
• 4.5 V to 48 V Operating supply voltage range
• Multiple control interface options
– PHASE/ENABLE (PH/EN)
– PWM (IN/IN)
• Smart tune, fast and mixed decay options
• Low RDS(ON): 165 mΩ HS + LS at 24 V, 25°C
• High Output Current Capability: 6.4-A peak
• Limits inrush current of brushed-DC motors
• Configurable Off-Time PWM Chopping
– 7, 16, 24 or 32 μs
• Supports 1.8 V, 3.3 V, 5.0 V logic inputs
• Low-current sleep mode (2 µA)
• Spread spectrum clocking for low EMI
• Protection features
– VM undervoltage lockout (UVLO)
– Charge pump undervoltage (CPUV)
– Overcurrent protection (OCP)
– Thermal shutdown (OTSD)
– Fault condition output (nFAULT)