LTC3303ARUCM#TRPBF

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. It 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. Applications include optical networking, servers, telecom, automotive, industrial, communications, distributed DC power systems (POL), FPGA, ASIC, µP core supplies.

• Peak current mode control, wide bandwidth, fast transient response
• Safely tolerates inductor saturation in overload
• Power good, internal compensation and soft-start
• Operating supply voltage range from 2.25 to 5.5V (TA=25°C, VIN=4V)
• Typical under voltage lockout is 2.1V (TA=25°C, VIN=4V)
• Enable threshold range from 0.375 to 0.425V (VEN rising, TA=25°C, VIN=4V)
• Regulated FB or output voltage range from 99 to 101% (% of Selected FB/VOUT, 0.5V≤FB/VOUT≤3.65V)
• Minimum duty cycle is 100% (TA=25°C, VIN=4V)
• Typical bottom switch ON-resistance is 12mohm (TA=25°C, VIN=4V)
• 12-pin FCQFN package, ambient temperature range from -40°C to 125°C

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party