LTC1702CGN Datasheet PDF - Linear Technology

●DESCRIPTION

●The LTC®1702 is a dual switching regulator controller optimized for high efficiency with low input voltages. It includes two complete, on-chip, independent switching regulator controllers each designed to drive a pair of external N-channel MOSFET devices in a voltage mode feedback, synchronous buck configuration. The LTC1702 uses a constant-frequency, true PWM design switching at 550kHz, minimizing external component size and cost and maximizing load transient

●performance. The synchronous buck architecture automatically shifts to discontinuous and then to Burst Mode™ operation as the output load decreases, ensuring maximum efficiency over a wide range of load currents.

●FEATURES

●■ Two Independent Controllers in One Package

●■ Two Sides Run Out-of-Phase to Minimize CIN

●■ All N-Channel External MOSFET Architecture

●■ No External Current Sense Resistors

●■ Excellent Output Regulation: 1% Total Output Accuracy

●■ 550kHz Switching Frequency Minimizes External Component Size

●■ 1A to 25A Output Current per Channel

●■ High Efficiency over Wide Load Current Range

●■ Quiescent Current Drops Below 100µA in Shutdown

●■ Small 24-Pin Narrow SSOP Package

●APPLICATION

●■ Microprocessor Core and I/O Supplies

●■ Multiple Logic Supply Generator

●■ Distributed Power Applications

●■ High Efficiency Power Conversion