Synchronous Step-Down DC/DC Converter from Linear Technology

The adjustable outputs are ideal for powering I/O, memory and core voltages of the latest DSPs and microcontrollers while each channel offers an independent enable pin. The buck regulator’s 2.25MHz switching frequency enables the utilization of tiny, low cost externals, providing a very compact solution footprint for handheld applications.

The LTC3670’s synchronous buck delivers efficiencies as high as 93% and constant frequency, current mode operation minimizes noise while offering fast transient response. The internal LDOs require only 150mV of dropout voltage, providing two additional low noise outputs. The LTC3670's BurstMode® operation minimizes quiescent current to only 70uA in no load conditions, maximizing battery run time. Other features include a Power-Good pin, internal soft-start and internal compensation.