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AIC1648 Fiches technique(PDF) 5 Page - Analog Intergrations Corporation

No de pièce AIC1648
Description  Built-in OVP White LED Step-Up Converter
Download  10 Pages
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Fabricant  AIC [Analog Intergrations Corporation]
Site Internet  http://www.analog.com.tw
Logo AIC - Analog Intergrations Corporation

AIC1648 Fiches technique(HTML) 5 Page - Analog Intergrations Corporation

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AIC1648
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
LED Current (mA)
Fig. 8 3 LEDs Efficiency vs. LED Current
0
5
10
15
20
60
65
70
75
80
85
90
3 LEDs, 10µH
L1: 976AS-100M, TOKO
D1: RB521S-30, ROHM
Test circuit refer to Fig.1
VIN=3.6V
VIN=4.2V
VIN=3.0V
LED Current (mA)
Fig. 9
4 LEDs Efficiency vs. LED Current
0
5
10
15
20
60
65
70
75
80
85
90
VIN=3.6V
VIN=4.2V
VIN=3.0V
4 LEDs, 10µH
L1: 976AS-100M, TOKO
D1: RB521S-30, ROHM
Test circuit refer to Fig.1
LED Current (mA)
Fig. 10 5 LEDs Efficiency vs. LED Current
0
5
10
15
20
60
65
70
75
80
85
VIN=3.6V
VIN=4.2V
VIN=3.0V
5 LEDs, 10µH
L1: 976AS-100M, TOKO
D1: RB521S-30, ROHM
Test circuit refer to Fig.1
LED Current (mA)
Fig. 11 3 LEDs Efficiency vs. LED Current
05
10
15
20
60
65
70
75
80
85
90
VIN=3.6V
VIN=4.2V
VIN=3.0V
3 LEDs, 6.8µH
L1: 976AS-6R8M, TOKO
D1: RB521S-30, ROHM
Test circuit refer to Fig.1
Fig. 12 Start-Up from Shutdown
VIN=3.6V; 3 LEDs; L1=10µF; COUT=0.22µF; ILED=20mA
VSHDN, 2V/div
IINDUCTOR, 100mA/div
VOUT, 2V/div
Fig. 13
Operation Wave Form
VIN=3.6V; 3 LEDs; L1=10µF; COUT=0.22µF; ILED=10mA
VOUT, 100mV/div
IINDUCTOR, 100mA/div
VSW, 10V/div
5


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