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BP1808A
Boost, Buck and Buck-Boost
DC/DC LED Driver
Description Features
The BP1808A is a DC/DC constant current LED driver Wide 3V to 70V Input Voltage Range
with an integrated 80V/300mΩ MOSFET designed for Supporting Boost Buck-Boost Buck
a wide input-voltage range of 3V to 70V. The BP1808A Topology
can be configured as Buck, Boost and Buck-Boost Integrated 80V/300mΩ MOSFET
topology. ±3% LED Output Current Accuracy
With a current sense reference of 200mV, the LED Combined Analog and PWM Dimming
l
current is programmed by an external current sense Fixed 420kHz operating Frequency
resistor and the power loss is minimized. The Adjustable Soft-Start a
i
BP1808A allows both analog and PWM dimming by Cycle-by-Cycle Peak Current Limiting
t
DIM pin. VDD Under Voltage Protection
Programmable Over Voltage Protection
The fixed 420kHz operating frequency minimizes size n
Thermal Regulation Function
of external inductor, input and output capacitor.
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