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AAT1500 데이터 시트보기 (PDF) - Advanced Analog Technology, Inc.
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AAT1500
CONSTANT CURRENT BOOST CONVERTER FOR 1 TO 4 WHITE LEDS
Advanced Analog Technology, Inc.
AAT1500 Datasheet PDF : 14 Pages
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Advanced Analog Technology, Inc.
TYPICAL OPERATING CHARACTERISTICS
July 2008
AAT1500
Typical Application
D1
μ
L1 4.7 H
D2
LED
D3
LED
μ
C2 D4
10 F
LED
AAT1500
1
VDD
6
SW
2
OVP
5
GND
3
IE EN
4
Ω
R1
12.4
VIN :
2.6V~5.5V
μ
C1
10 F
94%
92%
90%
88%
86%
84%
82%
80%
78%
76%
2.5
Efficiency vs. V
IN
1-LED
2-LED
3-LED
4-LED
3 3.5 4 4.5 5 5.5
V
IN
(V)
Efficiency vs. V
O
92%
90%
88%
86%
84%
82%
80%
78%
76%
3.5
6.5
9.5
12.5
V
O
(V)
Efficiency vs. LED Current
95%
90%
1-LED
85%
80%
2-LED
75%
4-LED
3-LED
70%
65%
60%
0
5
10 15 20 25 30
LED Current (mA)
22.5
22
21.5
21
20.5
20
19.5
2.5
LED Current vs. V
IN
LED Current vs. V
O
22
21.5
21
20.5
20
19.5
19
18.5
3.0 3.5 4.0 4.5 5.0 5.5
V
IN
(V)
3 4 5 6 7 8 9 10 11
V
O
(V)
–
台灣類比科技股份有限公司
–
–
Advanced Analog Technology, Inc
.
–
Version 1.00
Page 5 of 14
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