LTC3415 Datasheet | Linear Technology

Features n n n n n n n n n n n n n n n LTC3415 7A, Poly Phase Synchronous Step-Down Regulator DESCRIPTION .. High Efficiency: Up to 96% 7A Output Current at VIN = 3V Adjustable Frequency: 1.5MHz Nominal Poly Phase 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 The LTC®3415 is a high efficiency, monolithic synchronous buck regulator using a phase lockable constant frequency, current mode architecture. Poly Phase® 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 efficiency at low load currents. 100% duty cycle provides low dropout operation that extends operating time in battery-operated systems. The operating frequency is internally set at 1.5MHz, allowing the use of small surface mount inductors. For switching-noise sensitive applications, it can be externally synchronized from 0.75MHz to 2.25MHz. The PHMODE pin allows user control of the phase of the outgoing clock signal. The current sense parator is factory trimmed for accurate output current sharing. Burst Mode operation is inhibited during synchronization or when the MODE pin is pulled low to reduce noise and RF interference. , LT, LTC, LTM, Burst Mode and Poly Phase are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 5481178, 6580258, 6304066, 6127815,...