Ultra-small package coil-integrated step-down DC-DC converters

Torex Semiconductor has launched the XDL605/XDL606 series of AEC-Q100 compliant, ultra-small step-down 'micro DC-DC' converters which have an integrated coil and control IC.

An input voltage of 3V to 36V (absolute maximum rating 40V) and a switching frequency of 2.2MHz, 0.75V standard voltage supply is built-in, and the output voltage could be set from 1.8V to 5V with an external resistance. The control system can be chosen from PWM control (XDL605) or PWM/PFM automatic switching control (XDL606).

The soft-start time has been internally set to 2ms (typ), but can be optionally fixed to any wanted value by connecting a resistance and capacity to the EN/SS pin, and the power good function can make it possible to monitor the status of the output voltage. Sequence control can be accomplished with a blend of the soft-start time and power good function.

The coil and control IC are set in a DFN3625-11B ultra-small leadless package (outside dimensions: 2.5mm x 3.6mm x h 1.55mm), making these products amongst the smallest class of coil-integrated DC-DCs compliant with AEC-Q100 globally.