The AS1382 step down converter operates from an input ranging from 2.7 to 5.5V and provides an output down to 0.6V. Offering efficiency as high as 96% and no load current of 95µA, the converter helps those designing Li-ion battery powered devices to reduce losses in the power circuit and to extend their product's run time between charges. In shut down mode, the device draws 0.04µA.
Housed in a six lead chip scale package measuring 1.22 x 0.85mm, the AS1382 operates at an internally fixed frequency of 2MHz, 3MHz or 4MHz, enabling the use of a small inductor. A circuit based on the AS1382 DC/DC converter is said to be small enough to be accommodated in densely populated board designs, such as those found in mobile phones, portable media players and wearable devices.
The AS1382 is provided in variants offering a fixed output of 1, 1.2, 1.5 or 1.8V and in a version with an output adjustable over the range from 0.6 to 3.35V. All support a continuous load current of 1A, and require a 10µF output capacitor.
The step down converter may be operated in low ripple and low noise modes. In high efficiency mode, the device has lower power losses when supplying light loads, increasing stand by time in 'always on' battery operated products.
