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PR4404

PREMA
Part Number PR4404
Manufacturer PREMA
Description LED DRIVER
Published Jan 31, 2014
Detailed Description LED DRIVER PR4404 Low Voltage Boost Driver PR4404 for 0.5W / 1W Power LEDs The PR4404 is a step-up converter for white ...
Datasheet PDF File PR4404 PDF File

PR4404
PR4404

Overview
LED DRIVER PR4404 Low Voltage Boost Driver PR4404 for 0.
5W / 1W Power LEDs The PR4404 is a step-up converter for white LEDs, operating with single battery cell supply (1.
2/1.
5V) at up to 150mA LED current or dual cell supply (2.
4/3.
0V) at up to 300mA LED current.
A minimum part count allows compact and cost-efficient solutions.
The converter can be switched on and off with a logic signal, which is useful e.
g.
for PWM control, timer circuits etc.
Features • • • • minimum startup voltage 1.
0V supply by one or two battery cells low number of external components battery deep discharge protection Applications • • • • LED torches LCD panel backlighting home lighting toys Typical Application Circuit Pin Description PR4404 SW Vout Vcc Vs Pin No 1 2 3 4 5 6 7 8 Pin Name SW Vout Vcc Vs Hold Gnd (A) Gnd (sub) Gnd (S) Pin Function Description driver output output voltage, rectified battery supply input LED cathode / current sense resistor shutdown ground (analog)* ground (substrate)* groun...


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