Browser Compatibility Issue: We no longer support this version list of normal lab values pdf Internet Explorer. For optimal site performance we recommend you update your browser to the latest version. Product Details The LTC3728 is a dual high performance step-down switching regulator controller that drives all N-channel synchronous power MOSFET stages.
Power loss and noise due to the ESR of the input capacitors are minimized by operating the two controller output stages out of phase. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. 8V reference and power good output indicator are compatible with future microprocessor generations, and a wide 3. SS pin for each controller provides both softstart and optional timed, short-circuit shutdown. Current foldback limits MOSFET dissipation during short-circuit conditions when overcurrent latchoff is disabled.
Output overvoltage protection circuitry latches on the bottom MOSFET until VOUT returns to normal. The FCB mode pin can select among Burst Mode, constant-frequency mode and continuous inductor current mode or regulate a secondary winding. The product is appropriate for new designs but newer alternatives may exist. Demonstration circuit 542 is a dual output, dual phase synchronous step-down controller, featuring the LTC3728EG. 1 can be configured for either 5. 2 can be configured for either 3. The maximum load for both rails is 12A.
The input voltage range of the DC542 is 8V to 24V. The DC542 also contains a footprint for a 5. 5V boost converter bias supply whose output is connected to EXTVCC. Demonstration circuit 447 is a step-down converter featuring the LTC3728EUH regulator.
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