DRV8848PWPR

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.

Applications

• Appliances
• General Brushed and Stepper Motors
• Printers

Key features

• Dual H-Bridge Motor Driver – Single/Dual Brushed DC – Stepper PWM Control Interface
• Optional Current Regulation With 20-μs Fixed OffTime
• 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)