Buck-Boost Converter To Drive A Single LED From 1 Li-Ion Or 3 Alkaline Batteries

The NCP5030 is a fixed frequency PWM buck-boost converter optimized for constant current applications such as driving high-powered white LED The buck-boost is implemented in an H-bridge topology and has an adaptive architecture where it operates in one of three modes: boost, buck-boost, or buck depending on the input and output voltage condition. This device has been designed with high-efficiency for use in portable applications and is capable of driving in DC up to 900 mA into a high power LED for flashlight / torch applications. To protect the device cycle-by-cycle current limiting and a thermal shutdown circuit have been incorporated as well as output over-voltage protection. The 700 kHz switching frequency allows the use of a low value 4.7 ?H and ceramic capacitors. The NCP5030 is housed in a low profile space efficient 3x4mm thermally enhanced WDFN.
By ON Semiconductor
NCP5030 's PackagesNCP5030 's pdf datasheet

NCP5030 Pinout, Pinouts
NCP5030 pinout,Pin out
This is one package pinout of NCP5030,If you need more pinouts please download NCP5030's pdf datasheet.

NCP5030 Application circuits
NCP5030 circuits
This is one application circuit of NCP5030,If you need more circuits,please download NCP5030's pdf datasheet.

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