NXP MC33926PNB

The 33926 is a SMARTMOS monolithic H-bridge power IC 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. It meets the stringent requirements of automotive applications and is fully AEC-Q100 grade 1 qualified. The 33926 is able to control inductive loads with currents up to 5.0 A 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 6.5 A ± 1.5 A. Output loads can be pulse width modulated (PWM’ed) at frequencies up to 20 kHz. A load current feedback feature provides a proportional (0.24 % of the load current) current output suitable for monitoring by a microcontroller’s A/D input. A status flag output reports undervoltage, overcurrent, and overtemperature fault conditions. Two independent inputs provide polarity control of two half-bridge totem-pole outputs. Two independent disable inputs are provided to force the H-bridge outputs to tri-state (high-impedance off state). An inverted input changes the IN1 and IN2 inputs to low (true logic).

• 5.0 V to 28 V continuous operation (transient operation from 5.0 V to 40 V)
• 5.0 A throttle control H-bridge
• 225 mΩ maximum RDS(on) at 150 ℃ (each H-bridge MOSFET)
• 3.0 V and 5.0 V TTL/CMOS logic compatible inputs
• Overcurrent limiting (regulation) via an internal constant-off-time PWM
• Output short-circuit protection (short to VPWR or ground)
• Temperature dependent current limit threshold reduction
• All inputs have an internal source/sink to define the default (floating input) states
• Sleep mode with current draw < 50 μA (with inputs floating or set to match default logic states)
• AEC-Q100 grade 1 qualified

• Electronic throttle control (ETC)
• Exhaust gas recirculation (EGR)
• Turbo flap control
• Industrial and medical pumps and motor control