DESCRIPTION
The LTC®3415 is a high efficiency, monolithic synchronous buck regulator using a phase lockable constant frequency, current mode architecture. PolyPhase® operation allows multiple LTC3415s to run out of phase while using minimal input and output capacitance. The operating supply range is from 5.5V down to 2.5V, making it suitable for single Lithium-Ion battery as well as point of load power supply applications. Burst Mode operation provides high effi ciency at low load currents. 100% duty cycle provides low dropout operation that extends operating time in battery-operated systems.

FEATURES
■ High Effi ciency: Up to 96%
■ 7A Output Current at VIN = 3V
■ Adjustable Frequency: 1.5MHz Nominal
■ PolyPhase Operation (Up to 12 Phases)
■ Spread Spectrum Frequency Modulation
■ Output Tracking and Margining
■ ±1% Reference Accuracy
■ 2.5V to 5.5V VIN Range
■ Phase Lockable from 0.75MHz to 2.25MHz
■ Selectable Burst Mode® Operation
■ Low Dropout Operation: 100% Duty Cycle
■ Low Quiescent Current: 450μA
■ Current Mode Operation for Excellent Line and Load
   Transient Response
■ Shutdown Mode Draws Only 0.2μA Supply Current
■ Available in 38-Pin (5mm × 7mm) QFN Package

APPLICATIONS
■ Point of Load Power Supply
■ Portable Instruments
■ Distributed Power Systems
■ Battery-Powered Equipment