Description

The CA3282 is a logic controlled, eight channel octal power driven. The serial peripheral interface (SPI) utilized by the CA3282 is a serial synchronous bus compatible with Intersil CDP68HC05, or equivalent, microcomputers. As shown in the Block Diagram for the CA3282 each of the open drain NDMOS output drivers has individual protection for over-voltage and over-current. Each output channel has separate output latch control with fault unlatch and diagnostic feedback. Under normal ON conditions, each output driver is in a low, saturation state. Comparators in the diagnostic circuitry monitor the output drivers to determine if an out of saturation condition exists. If a comparator senses a fault, the respective output driver is unlatched. In addition, over current protection is provided with current limiting in each output, independent of the diagnostic feedback loop.

Features

• Output Current Drive Capability

    - All Outputs ON, Equal . . . . . . . . . . . . . . 0.625A Each

    - Per Output Individually . . . . . . . . . . . . . . . . . 1A Each

    - Maximum Total of Outputs ON . . . . . . . . . . . . . . . .5A

• High Voltage Power BiMOS Outputs

    - 8 Open Drain NDMOS Drivers

    - Individual Output Latch

    - Over-Current Limit Protection . . . . . . . . . . . . . 1.05A

    - Over-Voltage Clamp Protection. . . . . . . . . . . . . . . 30V

• High Speed CMOS Logic Control

    - Low Quiescent IDD Current . . . . . . . . . . . . . . . . . 5mA

    - SPI Bus Controlled Interface

    - Individual Fault Unlatch and Feedback

    - Common Reset Line

• Operating Temperature Range . . . . . . . -40°C to 125°C

Applications

• Automotive and Industrial Systems

• Solenoids, Relays and Lamp Drivers

• Logic and µP Controlled Drivers

• Robotic Controls