NCP1529MUTBGEVB: 0.9 ~ 3.9V @ 1A, 2.7 ~ 5.5V in

The NCP1529 step−down DC−DC converter is a monolithic integrated circuit for portable applications powered from one cell Li−ion or three cell Alkaline/NiCd/NiMH batteries.

The device – available in an adjustable output voltage from 0.9 V to 3.9 V – is able to deliver up to 1 A. It uses synchronous rectification to increase efficiency and reduce external part count. The device also has a built−in 1.7 MHz (nominal) oscillator which reduces component size by allowing a small inductor and capacitors. Automatic switching PWM/PFM mode offers improved system efficiency.

Additional features include integrated soft−start, cycle−by−cycle current limiting and thermal shutdown protection. The NCP1529 is available in a space saving, low profile 2x2 x 0.5 mm UDFN6 package and TSOP−5 package.