The 33984 is a dual self-protected 4.0 mOhm silicon switch used to replace

electromechanical relays, fuses, and discrete devices in power management

applications. The 33984 is designed for harsh environments, and it includes

self-recovery features. The device is suitable for loads with high inrush current,

as well as motors and all types of resistive and inductive loads.

Programming, control, and diagnostics are implemented via the serial

peripheral interface (SPI). A dedicated parallel input is available for alternate

and pulse-width modulation (PWM) control of each output. SPI-programmable

fault trip thresholds allow the device to be adjusted for optimal performance in

the application.

The 33984 is packaged in a power-enhanced 12 mm x 12 mm nonleaded

PQFN package with exposed tabs.

Features

• Dual 4.0 m max. high-side switch with parallel input or SPI control

• 6.0 V to 27 V operating voltage with standby currents < 5.0 A

• Output current monitoring with two SPI-selectable current ratios

• SPI control of overcurrent limit, overcurrent fault blanking time, output OFF

open load detection, output ON/OFF control, watchdog timeout, slew-rates,

and fault status reporting

• SPI status reporting of overcurrent, open and shorted loads,

overtemperature, undervoltage and overvoltage shutdown, fail-safe pin

status, and program status

• Enhanced -16 V reverse polarity VPWR protection

Applications

• DC motor or solenoid

• Resistive or inductive loads

• Low-voltage lighting