LTC7124 17 V, Dual 3.5 A Synchronous Step-Down Regulator
Spread spectrum modulation reduces EMI in Linear Technology's compact 3 mm x 5 mm QFN step-down regulator
Linear Technology's LTC7124 is a dual-channel, 3.5 A per output, high efficiency monolithic step-down regulator capable of operating from input supplies up to 17 V. The programmable switching frequency ranges from 500 kHz to 4 MHz with a ±25% external clock synchronization capability around the programmed frequency. The regulator features ultra-low quiescent current for high efficiency over a wide VOUT range.
The step-down regulator operates from an input voltage range of 3.1 V to 17 V and provides an adjustable output range from 0.6 V to 99% of VIN while delivering up to 3.5 A of output current per channel. A user selectable mode input is provided to allow the user to trade off output ripple for light load efficiency; Burst Mode® operation provides the highest efficiency at light loads, while forced continuous operation provides the lowest output ripple. The LTC7124 includes spread spectrum modulation for low radiated and conductive noise. The LTC7124 is offered in a thermally enhanced, low-profile, 24-lead, 3 mm x 5 mm QFN package.