AT1312A/B/C
Preliminary Product Information
High Efficiency, Constant Current
White-LEDs Driver
Typical Characteristics
Conversion Efficiency
L:SR0302 D:RB501-40
Efficiency vs. Vin (3 LED)
L:SR0302 D:RB501-40
90
88
86
84
82
80
78
90
85
80
75
6LEDs, L=22u H, Vi n=3 V
4LEDs, L=22u H, Vi n=3 V
76
I o=20 mA, L=22u H
70
65
74
I o=20 mA, L=10u H
I o=20 mA, L=6. 8u H
72
3LEDs, L=22u H, Vi n=3 V
I o=20 mA, L=4. 7u H
70
2
3
4
5
6
15
20
0
5
10
Vin (V)
LED CURRENT(mA)
Efficiency vs. Vin (6 LED)
L:SR0302 D:RB501-40
Efficiency vs. Vin (4 LED)
L:SR0302 D:RB501-40
90
90
88
86
84
82
80
78
76
74
72
70
88
86
84
82
80
78
76
74
72
70
Io=20mA,
L=22uH
Io=20mA, L=22uH
Io=20mA, L=10uH
Io=20mA,L=6.8uH
Io=20mA,L=4.7uH
Io=20mA, L=10uH
Io=20mA, L=6.8uH
Io=20mA,L=4.7u
2
3
4
5
6
2
3
4
5
6
H
Vin (V)
Vin (V)
7F, No.9,PARK AVENUE. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
2/23/2006 REV:1.1
Fax: 886-3-563-0879
WWW: http://www.aimtron.com.tw
Email: service@aimtron.com.tw
5
AIMTRON [ AIMTRON TECHNOLOGY ]
