The DRV8848 provides a dual H-bridge motor driver for home appliances and other mechatronic applications. The device can be used to drive one or two DC motors, a bipolar stepper motor, or other loads. A simple PWM interface allows easy interfacing to controller circuits.
●The output block of each H-bridge driver consists of N-channel and P-channel power MOSFETs configured as full H-bridges to drive the motor windings. Each H-bridge includes circuitry to regulate the winding current using a fixed off-time chopping scheme. The DRV8848 is capable of driving up to 2 A of current from each output or 4 A of current in parallel mode (with proper heat sinking, at 12 V and TA = 25°C).
●A low-power sleep mode is provided, which shuts down internal circuitry to achieve very-low quiescent current draw. This sleep mode can be set using a dedicated nSLEEP pin.
●Internal protection functions are provided for UVLO, OCP, short-circuit protection, and overtemperature. Fault conditions are indicated by a nFAULT pin.
● Dual H-Bridge Motor Driver
● Single/Dual Brushed DC
● Stepper
● PWM Control Interface
● Optional Current Regulation With 20-µs Fixed Off-
●Time
● High Output Current per H-Bridge
● 2-A Maximum Driver Current at 12 V and
●TA = 25°C
● Parallel Mode Available Capable of 4-A
●Maximum Driver Current at 12 V and
●TA = 25°C
● 4- to 18-V Operating Supply Voltage Range
● Low-Current 3-µA Sleep Mode
● Thermally-Enhanced Surface Mount Package
● Protection Features
● VM Undervoltage Lockout (UVLO)
● Overcurrent Protection (OCP)
● Thermal Shutdown (TSD)
● Fault Condition Indication Pin (nFAULT)
