AS3645 austriamicrosystems, AS3645 Datasheet - Page 9

• Manufacturer Part Number: AS3645
• Description: 1000/720ma Ultra Small High Efficient Single/dual Led Flash Driver With Safety Features
• Manufacturer: austriamicrosystems

AS3645
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
Figure 12. I
Figure 14. Oscillator frequency f
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Figure 10. I
120.00
110.00
100.00
2.04
2.03
2.02
2.01
2.00
90.00
80.00
70.00
60.00
50.00
40.00
-40
20
LED_OUT
LED
-20
Rampdown (I
Ambient Temperature (C)
25
Resistor RISET (kOhm)
vs. R
0
250µs/Div
at RISET=26kΩ
default current
ISET
30
LED_OUT
(Torch Mode, 1 LED)
20
CLK
35
vs. T
40
=320mA)
AMB
AS3645B
40
60
only
45
80
Revision 1.6
Figure 15. Flash Timeout
Figure 11. I
Figure 13. I
324
323
322
321
320
319
500
400
300
200
100
0
-40
0
LED_OUT
LED_OUT
-20
0.5
Ambient Temperature (C)
VOUT-LED_OUT (V)
Linearity of current sink
vs. T
0
LED_OUT
STROBE
250ms/Div
1V/Div
VOUT
AMB
1
20
1.5
40
ILED = 200mA
ILED = 300mA
ILED = 400mA
2
60
2.5
80
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