Monolithic 4A DC/DC Step-Down Regulator

The EL7554 is a full-feature synchronous 4A step-down regulator capable of up to 96% efficiency. This device operates from 3V to 6V VIN input supply. With internal CMOS power FETs, the device can operate at up to 100% duty ratio, allowing for output voltage range from 0.8V up to nearly VIN.The adjustable high switching frequency of up to 1MHz enables the use of small components, making the whole converter occupy less than 0.58 square inch with components on one side of the PCB.

Features
• Integrated MOSFETs
• 4A continuous output current
• Up to 96% efficiency
• All ceramic capacitors
• Multiple supply start-up tracking
• Built-in ±5% voltage margining
• 3V to 6V input voltage
• 0.58 in2 footprint with components on one side of PCB
• Adjustable switching frequency to 1MHz
• Oscillator synchronization possible
• 100% duty ratio
• Junction temperature indicator
• Over-temperature protection
• Internal soft-start
• Variable output voltage down to 0.8V
• Power-good indicator
• 28 Ld HTSSOP package
• Pb-free available (RoHS compliant)

Applications
• Point-of-regulation power supplies
• FPGA Core and I/O supplies
• DSP, CPU Core, and IO supplies
• Logic/Bus supplies
• Portable equipment