LTC3622EDE-2#PBF, Switching Voltage Regulators 17V, Dual 1A Synchronous Step-Down Regulator with Ultralow Quiescent Current

LTC®3622 is a dual 1A output, high efficiency synchronous monolithic step-down regulator capable of operating from input supplies up to 17V. The regulator features ultralow quiescent current and high efficiency over a wide output voltage range. The step-down regulator operate from an input voltage range of 2.7V to 17V and provide an adjustable output from 0.6V to VIN while delivering up to 1A of output current. A user-selectable mode input is provided to allow the user to trade off ripple noise for light load efficiency. Burst Mode® operation provides the highest efficiency at light loads, while pulse-skipping mode provides the lowest ripple noise. The switching regulator can be synchronized to an external clock. Typical applications are battery powered systems, point-of-load supplies, portable - handheld scanners.

• 2.25MHz frequency
• Adjustable output voltage, phase shift programmable with external clock
• Dual step-down outputs is 1A per channel, internal compensation and soft-start
• Wide VIN range from 2.7V to 17V, wide VOUT range from 0.6V to VIN
• No-load IQ = 5µA with both channels enabled; IQ < 4µA with only one channel enabled
• High efficiency, low dropout operation (100% duty cycle)
• ±1% output voltage accuracy, selectable current limit
• Current mode operation for excellent line and load transient response
• 14-lead (3mm x 4mm) plastic DFN package
• Temperature rating range from -40°C to 125°C