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CAT37 Datasheet(PDF) 4 Page - Catalyst Semiconductor

Part # CAT37
Description  CMOS White LED Driver Boost Converter
PDF  13 Pages
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Manufacturer  CATALYST [Catalyst Semiconductor]
Direct Link  http://www.catalyst-semiconductor.com
Logo CATALYST - Catalyst Semiconductor

CAT37 Datasheet(HTML) 4 Page - Catalyst Semiconductor

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CAT37
4
Doc. No. 5005, Rev. R
TYPICAL CHARACTERISTICS
VIN = 3.6 V,TAMB = 25˚C, CIN = 4.7
µF, COUT = 1µF, L = 6.8 µH, unless otherwise specified.
14.0
14.5
15.0
15.5
16.0
-50
-25
0
25
50
75
100
4 LEDs
4 LEDs
LED Current vs. Temperature
80
85
90
95
100
105
110
0
5
10
15
20
LED CURRENT [mA]
3 LEDs
3 LEDs
FB Pin Voltage vs. LED Current
0.8
0.9
1.0
1.1
1.2
1.3
-50
-25
0
25
50
75
100
LOAD =20 mA
LOAD = 3 LEDs VIN
= 3.6V
LOAD = 20mA
LOAD = 3 LEDs
VIN = 3.6V
Switching Frequency vs. Temperature
0
10
20
30
23
4
5
6
INPUT VOLTAGE [V]
3 LEDs
20mA
10mA
3 LEDs
20mA
10mA
LED Current vs. Input Voltage
0.8
0.9
1.0
1.1
1.2
1.3
12
34
5
6
INPUT VOLTAGE [V]
4 LEDs
Switching Frequency vs. Input Voltage
80
85
90
95
100
-50
-25
0
25
50
75
100
4 LEDs at 15mA
VIN = 3.6V
4LEDs at 15mA
VIN = 3.6V
FB Pin Voltage vs. Temperature
4 LEDs



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