The LT3742 is a dual step-down DC/DC switching regulator controller that drives high side N-channel power MOSFETs. A 500kHz fixed frequency current mode architecture provides fast transient response with simple loop compensation components and cycle-by-cycle current limiting. The output stages of the two controllers operate 180° out of phase to reduce the input ripple current, minimizing the noise induced on the input supply, and allowing less input capacitance. An internal boost regulator generates a bias rail of VIN + 7V to provide gate drive for the N-channel MOSFETs allowing low dropout and 100% duty cycle operation. The LT3742 can be used for applications where both controllers need to operate independently, or where both controllers are used to provide a single higher current output. The device is available in a thermally enhanced 4mm × 4mm QFN package. Applications * Satellite and Cable TV Set-Top Boxes * Distributed Power Regulation * Automotive Systems * Super Capacitor Charger * Wide Input Voltage Range: 4V to 30V * Wide Output Voltage Range: 0.8V to VIN * Low Shutdown IQ: 20μA * Out-of-Phase Controllers Reduce Required Input Capacitance and Power Supply Induced Noise * 0.8V ±1.5% Voltage Reference * 500kHz Current Mode Fixed Frequency Operation * Internal Boost Converter Provides Bias Rail for N-Channel MOSFET Gate Drive * Power Good Voltage Monitor for Each Output * Programmable Soft-Start * 24-Lead 4mm × 4mm × 0.75mm Package https://elecena.pl/product/641102/dual-2-phase-step-down-switching-controller 2008-05-08 https://elecena.pl/product/641102/dual-2-phase-step-down-switching-controller 2014-06-11 https://elecena.pl/product/641102/dual-2-phase-step-down-switching-controller 2025-01-20