Analog Devices LTC3303

Description

The LTC®3303 is a very small, high efficiency, low noise, monolithic synchronous 4A step-down DC/DC converter operating from a 2.25V to 5.5V input supply. Using constant frequency, peak current mode control, this regulator achieves fast transient response with small external components.The LTC3303 operates in forced continuous or pulse skipping mode for low noise, or in low-ripple Burst Mode operation for high efficiency at light loads, ideal for battery-powered systems. The IC regulates output voltages as low as 500mV. The adjustable version operates from 500mV to VIN with two additional external resistors. Other features include output overvoltage protection, short-circuit protection, thermal shutdown, clock synchronization,and up to 100% duty cycle operation for low dropout.The device is available in a low profile 2mm × 2mm FCQFN package with exposed pad and side wettable flanks.

Features

• High Efficiency: 12mΩ NMOS, 34mΩ PMOS
• Peak Current Mode Control
• 27ns Minimum On-Time
• Wide Bandwidth, Fast Transient Response
• Low-Ripple Burst Mode® Operation with IQ of 80μA
• Up to 6MHz Operation
• Safely Tolerates Inductor Saturation in Overload
• VIN Range: 2.25V to 5.5V
• Fixed VOUT Range: 0.5V to 3.65V, FactoryProgrammed in 50mV Steps
• VOUT Accuracy: ±1% Overtemperature Range
• Precision 400mV Enable Threshold
• Shutdown Current: 1μA
• Power Good, Internal Compensation and Soft-Start
• Thermally Enhanced, 12-Pin, 2mm × 2mm, Flip Chip(FCQFN) Package with Side Wettable Flanks
• AEC-Q100 Qualified for Automotive Applications

Typical applications

• Automotive
• Optical Networking, Servers, Telecom, Communications
• FPGA, ASIC, μP Core Supplies
• Distributed DC Power Systems (POL), FPGA, ASIC, μP Core Supplies
• Industrial

More information

• Datasheet
• IC product information