LTC3892IUH-2#PBF

LTC3892-2 is a high performance dual step-down DC/DC switching regulator controller that drives all N-channel synchronous power MOSFET stages. Power loss and noise are minimized by operating the two controller output stages out-of-phase. The gate drive voltage can be programmed from 5V to 10V to allow the use of logic or standard-level FETs and to maximize efficiency. Internal switches in the top gate drivers eliminate the need for external bootstrap diodes. A wide 4.5V to 60V input supply range encompasses a wide range of intermediate bus voltages and battery chemistries. Output voltages up to 99% of VIN can be regulated. OPTILOOP® compensation allows transient response and loop stability to be optimized over a wide range of output capacitance and ESR values. The 29μA no-load quiescent current extends operating run time in battery powered systems. Applications include automotive and industrial power systems, distributed DC power systems and high voltage battery operated systems.

• Wide VIN range from 4.5V to 60V (65V abs maximum)
• Wide output voltage range from 0.8V ≤ VOUT ≤ 99% • VIN
• Adjustable gate drive level 5V to 10V (OPTI-DRIVE)
• No external bootstrap diodes required, low operating IQ: 29μA (one channel on)
• Selectable gate drive UVLO thresholds
• Out-of-phase operation reduces required input capacitance and power supply induced noise
• Phase-lockable frequency from 75KHz to 850KHz
• Selectable continuous, pulse skipping or low ripple burst mode operation at light loads
• Selectable current limit, power good output voltage monitors, low shutdown IQ: 3.6μA
• 32-lead plastic QFN package, -40°C to 125°C temperature range

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party