LTC3892HUH#PBF

LINEAR TECHNOLOGY  LTC3892HUH#PBF  直流/直流控制器, 高性能, 4.5V至60V, 2路输出, 同步降压, 900kHz, QFN-32

The is a high-performance dual step-down DC/DC Switching Regulator Controller 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 5 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 4.5 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 the 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.

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No external bootstrap diodes required

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Selectable gate drive UVLO thresholds

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Out-of-phase operation reduces required input capacitance and power supply induced noise

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Selectable continuous, pulse skipping or low ripple burst mode operation at light loads

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3.6µA Low shutdown IQ