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PR4404 Datasheet(PDF) 2 Page - PREMA Semiconductor.

Part # PR4404
Description  Low Voltage Boost Driver PR4404 for 0.5 W / 1 W Power LEDs
PDF  12 Pages
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Manufacturer  PREMA [PREMA Semiconductor.]
Direct Link  https://www.prema.com/
Logo PREMA - PREMA Semiconductor.

PR4404 Datasheet(HTML) 2 Page - PREMA Semiconductor.

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LED Driver PR4404
Properties
BLOCK DIAGRAM
ELECTRICAL CHARACTERISTICS
Ta = 25°C, unless otherwise noted.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Vcc
Supply Voltage: min. operating
min. startup
max. operating
0.89
1.00
1.05
5.0*
[V]
[V]
[V]
Vsat
SW output transistor saturation
1.0 A
0.4
[V]
fsw
Switching Frequency
300
700
[kHz]
VFB
Feedback voltage threshold at Vs
200
[mV]
Quiescent supply current
Hold = LOW
Vcc > 850 mV
2.0
3.0
[mA]
Icc
Supply current
Hold = open
Vcc > 850 mV
2.0
3.0
[mA]
VSW Clamp
SW output clamping voltage
14
[V]
ΘJA
Thermal resistance
junction - ambient
no air convection
160
[K/W]
* but Vcc must be less than the Forward Voltage of the LED
© PREMA Semiconductor GmbH 2006-2017 I rev. 1017
Page 2/12



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