LTC3310S Monolithic Step-Down DC/DC Converter

Analog Devices' LTC3310S is a very small, low noise, monolithic step-down DC/DC converter capable of providing up to 10 A of output current from a 2.25 V to 5.5V input supply. The part employs Silent Switcher 2 architecture with internal hot loop bypass capacitors to achieve both low EMI and high efficiency at switching frequencies as high as 5 MHz. For systems with higher power requirements, multi-phasing parallel converters are readily implemented.

The LTC3310S uses a constant-frequency, peak current mode control architecture for fast transient response. A 500 mV reference allows for low voltage outputs. One hundred percent duty cycle operation delivers low drop out.

Other features include a power good signal when the output is in regulation, precision enable threshold, output overvoltage protection, thermal shutdown, a temperature monitor, clock synchronization, mode selection, and output short circuit protection. The device is available in a compact 18-lead 3 mm x 3 mm LQFN package.