Analog Devices LTC3311

Description

The LTC®3311 is a very small, low noise, monolithicstep-down DC/DC converter capable of providing up to12.5A of output current from a 2.25V to 5.5V input supply.The device employs Silent Switcher 1 architecture withinternal hot loop bypass capacitors to achieve both lowEMI and high efficiency at switching frequencies as highas 5MHz. For systems with higher power requirements,multi-phasing parallel converters is readily implemented.

Features

• Pin Compatible with LTC3310/LTC3310S and LTC3311S
• Silent Switcher® Architecture:
• Ultralow EMI Emissions
• High Efficiency—4.5mΩ NMOS and 16mΩ PMOS
• Wide Bandwidth, Fast Transient Response
• Safely Tolerates Inductor Saturation in Overload
• VIN Range: 2.25V to 5.5V
• VOUT Range: 0.5V to VIN
• VOUT Accuracy: ±1% with Remote Sense
• Peak Current Mode Control
• Minimum On-Time: 35ns
• Programmable Frequency to 5MHz
• Precision 400mV Enable Threshold, 1μA in Shutdown
• Output Soft-Start with Voltage Tracking
• Power Good Output
• Die Temperature Monitor
• Configurable for Paralleling Power Stages in ForcedContinuous Mode
• Thermally-Enhanced 3mm × 3mm LQFN Package
• AEC-Q100 Qualified for Automotive Applications

Typical applications

• Servers, Telecom Power Supplies, Distributed DC Power Systems (POL)
• Automotive/Industrial/Communications

More information

• Datasheet