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LTC3311 Datasheet 12.5a Synchronous Step-down Silent Switcher

Manufacturer: Analog Devices

Overview: LTC3311/LTC3311-X 5V, 12.5A Synchronous Step-Down Silent Switcher in 3mm × 3mm.

General Description

n Pin Compatible with LTC3310/LTC3310S and LTC3311S n Silent Switcher® Architecture n Ultralow EMI Emissions n High Efficiency—4.5mΩ NMOS and 16mΩ PMOS n Wide Bandwidth, Fast Transient Response n Safely Tolerates Inductor Saturation in Overload n VIN Range: 2.25V to 5.5V n VOUT Range: 0.5V to VIN n VOUT Accuracy: ±1% with Remote Sense n Peak Current Mode Control n Minimum On-Time: 35ns n Programmable Frequency to 5MHz n Precision 400mV Enable Threshold, 1μA in Shutdown n Output Soft-Start with Voltage Tracking n Power Good Output n Die Temperature Monitor n Configurable for Paralleling Power Stages in Forced Continuous Mode n Thermally-Enhanced 3mm × 3mm LQFN Package n AEC-Q100 Qualified for Automotive Applications APPLICATIONS n Automotive/Industrial/Communications n Servers, Telecom Power Supplies n Distributed DC Power Systems (POL) n FPGA, ASIC, µP Core Supplies The LTC®3311/LTC3311-X is a very small, low noise, monolithic step-down DC/DC converter capable of providing up to 12.5A of output current from a 2.25V to 5.5V input supply.

The device employs Silent Switcher 1 architecture to achieve both low EMI and high efficiency at switching frequencies as high as 5MHz.

For systems with higher power requirements, multi-phasing parallel converters is readily implemented.

LTC3311 Distributor