DRV8848PWPR

1 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)

2 Applications

• Appliances

• General Brushed and Stepper Motors

• Printers

3 Description

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.

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