Datasheet4U Logo Datasheet4U.com

LTC3729 Datasheet Synchronous Step-Down Switching Regulator

Manufacturer: Linear Technology (now Analog Devices)

General Description

n Wide VIN Range: 4V to 36V Operation n Reduces Required Input Capacitance and Power Supply Induced Noise n ±1% Output Voltage Accuracy n Phase-Lockable Fixed Frequency: 250kHz to 550kHz n True Remote Sensing Differential Amplifier n PolyPhase® Extends from Two to Twelve Phases n Reduces the Size and Value of Inductors n Current Mode Control Ensures Current Sharing n 1.1MHz Effective Switching Frequency (2-Phase) n OPTI-LOOP® Compensation Reduces COUT n Power Good Output Voltage Indicator n Very Low Dropout Operation: 99% Duty Cycle n Adjustable Soft-Start Current Ramping n Internal Current Foldback Plus Shutdown Timer n Overvoltage Soft-Latch Eliminates Nuisance Trips n Available in 5mm × 5mm QFN and 28-Lead SSOP Packages APPLICATIONS n Desktop Computers/Servers n Large Memory Arrays n DC Power Distribution Systems L, LT, LTC, LTM, PolyPhase, OPTI-LOOP, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

The LTC®3729 is a multiple phase, synchronous step‑down current mode switching regulator controller that drives N‑channel external power MOSFET stages in a phase‑lockable fixed frequency architecture.

Overview

LTC3729.

Key Features

  • 550kHz, PolyPhase, High Efficiency, Synchronous Step-Down Switching Regulator.