IT7803

M3TEK IT7803 5V/3A High Efficiency Step-Down DC/DC Converter Description The IT7803 is a low-input voltage and high-output current synchronous-buck PWM converter and integrates with all required active components. Its’ operating input voltage ranges from 2.5V to 6V and output voltage ranges from VIN down to 0.8V. The IT7803 operates at a fixed switching frequency of 1.0MHz. In addition, it provides internal soft-start to reduce inrush-current, current-limit and thermal shutdown, preventing IC from being damaged and improving design reliability. Open-drain power good monitors the output voltage. Features High Efficiency up to 95% 2.5V to 6V Input Voltage Range 3A Output Current 220µA Low Quiescent Current (Active Mode) Shutdown Current: 7µA 1.0MHz Constant Frequency Operation 0.8V to VIN Adjustable Output Voltage Current Mode Operation Power Good Function Monitoring Output Voltage Internal Soft-Start Thermal Shutdown Current-Limit and Short-Circuit Protection SOP 8L-EP Package RoHS Compliant (100% Green Available) Applications ASIC/DSP/µP/FPGA Core and I/O Voltages Networking and Telecommunications TV Set-Top Boxes Cellular Base Stations Typical Applications Efficiency vs. Output Current at VIN=5V Figure 1. Typical Application Circuit Efficiency vs. Output Current at VIN=3.3V Rev. 0.2 www.m3tekic.com M3tekic Confidential 1 ...