The LTC3546IFE#TRPBF is a high efficiency, synchronous step-down regulator with an integrated dual input, from Analog Devices. This regulator provides 2A of continuous output current from inputs ranging from 3V to 20V. It operates from wide input and output voltage ranges, with an external input voltage range of 3V to 20V and an external output voltage range of 0.9V to 20V. The LTC3546IFE#TRPBF operates in 1.5MHz fixed frequency, allowing it to achieve high efficiency without the need of an external compensation network. The PWM (pulse-width modulation) control provides very fast transient response and requires only a minimum number of external components. The regulator features low quiescent current, programmable switching frequency, and a high-speed load-transient response. In addition, the LTC3546IFE#TRPBF also includes short-circuit protection, current mode control and cycle-by-cycle current limiting.