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PR4401 Datasheet(PDF) 2 Page - List of Unclassifed Manufacturers

Part # PR4401
Description  0.9V Boost Driver for White LEDs PR4401/4402 Requires Only One External Component
PDF  12 Pages
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Manufacturer  ETC1 [List of Unclassifed Manufacturers]
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PR4401 Datasheet(HTML) 2 Page - List of Unclassifed Manufacturers

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Ref.
Vcc
Gnd
Vout
Comp.
Control
Logic
LED DRIVER PR4401/PR4402
Absolute Maximum Ratings (PR4401 and PR4402)
Parameter
Min
Typ
Max
Units
VCC (no damage)
-0.3
8
V
Operating Temperature Range
-20
85
°C
Storage Temperature Range
-55
150
°C
Electrostatic Discharge (ESD) Protection
2
kV
Electrical Characteristics
Vcc=1.5V, Ta = 25°C, 10-22µH: one white LED / 4.7-6.8µH: two white LEDs in parallel, unless otherwise noted.
Parameter
Conditions
Min
Typ
Max
Min
Typ
Max Units
PR4401
PR4402
Supply Voltage, min. operating
min. startup
max. operating
L1 = 10...22µH
Ta = 25°C
1.90
0.70
0.90
0.80
0.95
1.90
0.70
0.90
0.80
0.95
V
V
V
Supply Voltage, min. operating
min. startup
max. operating
L1 = 10...22µH
Ta = 0...60°C
1.90
0.80
1.00
0.90
1.05
1.90
0.80
1.00
0.90
1.05
V
V
V
LED Mean Current
measured with L1 type LQH32C Murata
L1 = 47µH
L1 = 32µH
L1 = 26.7µH
L1 = 22µH
L1 = 14.7µH
L1 = 10µH
L1 = 6.8µH
L1 = 4.7µH
6.5
8.3
10.8
12
15
23
--
--
--
--
--
12
15
23
32
40
mA
mA
mA
mA
mA
Switching Current at Vout
Vout = 0.4V
200
250
mA
Switching Frequency
500
500
kHz
Quiescent supply current
Vcc > 950mV
Vcc = 600mV
Vcc = 400mV
4
50
10
5
8
100
20
10
mA
µA
µA
Efficiency
80
80
%
Vout
Vcc
15
15
V
Block Diagram
© PREMA Semiconductor GmbH 2006-2008
Page 2/12
Rev 0908



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