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/Title (NCP5030 - Buck-Boost Converter to Drive a Single LED from 1 Li-Ion or 3 Alkaline Batteries)
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ON Semiconductor
NCP5030 - 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 uH and ceramic
capacitors. The NCP5030 is housed in a low profile space efficient
3x4 mm thermally enhanced WDFN.
2010-01-14T16:04:19-07:00
BroadVision, Inc.
2020-08-31T08:56:32+02:00
2020-08-31T08:56:32+02:00
Acrobat Distiller 8.1.0 (Windows)
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