1A Buck-Boost LED Driver
The SP2354 is a high efficiency synchronous
buck/boost DC/DC converter for application
using battery powered devices to drive a
single power LED at current up to 1A. The
regulator operates in either synchronous buck,
boost or buck-boost mode depending on the
input voltage and LED forward voltage.
Efficiency greater than 90% can be achieved
over the entire usable range of Li-Ion battery:
2.8V to 5.5V.
Hand Held Communication Equipment
Li-Ion LED Driver
Cell Phone Camera Flash
Cell Phone Torch Lighting
LED current is programmable to one of four
Including shutdown, with dual external
resistors and dual enable inputs. In shutdown
no supply current is drawn.
A high operation frequency of 1MHz allows
using of small external components. The
SP2354 is offered in DFN10 package.
Higher than 85% Efficiency
Wide Input Voltage Range: 2.8V to 5.5V
Faulty LED Protection
Internal Soft Start
Up to 1A continuous Output Current
Zero Shutdown Current
Over Temperature Protection
Over Current Protection
Constant Frequency 1.0MHz Operation
PIN CONFIGURATION ( DFN-10 )
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