H-Bridge 46-Pin(44+2Tab) HSOP

The 33931 is a monolithic H-Bridge Power IC in a robust thermally enhanced package. It is designed primarily for automotive electronic throttle control, but is applicable to any low-voltage DC servo motor control application within the current and voltage limits stated in this specification. The 33931 H-bridge is able to control inductive loads with currents up to 5.0A peak. RMS current capability is subject to the degree of heatsinking provided to the device package. Internal peak-current limiting (regulation) is activated at load currents above 6.5A ±1.5A. Output loads can be pulse width modulated (PWM-ed) at frequencies up to 11kHz.

8.0V to 28V continuous operation (transient operation from 5.0V to 40V)

235mO maximum RDS(ON) @ Tj=150°C (each H-Bridge MOSFET)

3.0V and 5.0V TTL / CMOS logic compatible inputs

Over-current limiting (regulation) via internal constant-off-time PWM

Output short-circuit protection (short to VPWR or GND)

Temperature-dependant current-limit threshold reduction

All inputs have an internal source/sink to define the default (floating input) states

Sleep mode with current draw < 50µA (each half with inputs floating or set to match default logic states)