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AS3661 Datenblatt(PDF) 13 Page - ams AG

Teilenummer AS3661
Bauteilbeschribung  Programmable 9-channel LED Dr iver
PDF  87 Pages
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Hersteller  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS3661 Datenblatt(HTML) 13 Page - ams AG

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www.austriamicrosystems.com
Revision 1.3
12 - 85
AS3661
Datasheet - Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s
7 Typical Operating Characteristics
VBAT = 3.6V, VEN = 1.65V, CBAT = CVCPOUT = 1.0µF, CFLY1-2 = 0.47µF, TAMB = +25ºC, unless otherwise specified
Figure 4. Charge Pump 1.5 x Efficiency vs. Load
Figure 5. Output Voltage vs. Load Current (1.5 x CP)
0
10
20
30
40
50
60
70
80
90
100
0
15
30
45
60
75
90
Iload [mA]
VBAT = 2.7V
VBAT = 3.0V
VBAT = 3.3V
VBAT = 3.6V
3,2
3,4
3,6
3,8
4
4,2
4,4
0
15
30
45
60
75
90
105
120
Iload [mA]
VBAT = 2.7V
VBAT = 3.0V
VBAT = 3.3V
VBAT = 3.6V
Figure 6. Gain Change Hysteresis Loop (6x1mA load)
Figure 7. Effect of adap. hyst. on width of hyst. loop
2,5
2,7
2,9
3,1
3,3
3,5
3,7
3,9
4,1
4,3
4,5
2,6
2,8
3
3,2
3,4
3,6
3,8
4
Vbat [V]
Vbat increasing
Vbat decreasing
6 x LED Multicomp OVS-0601
0
0,1
0,2
0,3
0,4
0,5
0,6
0
10
20
30
40
50
60
70
80
90
100
Iload [mA]
400mV Adaptive Hysterese
200mV Adaptive Hysterese
200mV Hysterese
400mV Hysterese
6 x LED Multicomp OVS-0601
Figure 8. LED Current matching distribution @17.5mA
Figure 9. LED current Accuracy distribution @17.5mA
−1
0
1
0
70
%
Total count: 610 parts
−2
0
2
0
60
%
Total count: 610 parts



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