H-Bridge Driver 32-Pin(30+2Tab) HSOP

The 33899 is designed to drive a DC motor in both forward and reverse shaft rotation under pulse-width modulation (PWM) control of speed and torque. A current mirror output provides an analog feedback signal proportional to the load current. Serial peripheral interface (SPI) is used to select slew rate control and to read diagnostic status (faults) of the H-Bridge drive circuits. SPI diagnostic reporting includes open circuit, short circuit to VIGNP, short circuit to ground, die temperature range, and undervoltage on VIGNP.

Drives Inductive Loads in a Full H-Bridge Configuration

Current Mirror Output Signal (Gain Selectable via External Resistor)

Short Circuit Current Limiting

Thermal Shutdown (Outputs Latched Off Until Reset via SPI)

Internal Charge Pump Circuit for the Internal High-Side MOSFETs

SPI-Selectable Slew Rate Control

Overtemperature Shutdown

Outputs Can Be Disabled to High-Impedance State

PWM-able up to 11 kHz @ 3.0 A

Synchronous Rectification Control of the High-Side MOSFETs

Low RDS(ON) Outputs at High Junction Temperature (< 150 mOhm @ 150°C)