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AS3630 Datasheet(PDF) 63 Page - ams AG

Part # AS3630
Description  8A Supercap Flash Driver
PDF  72 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS3630 Datasheet(HTML) 63 Page - ams AG

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8A Supercap Flash Driver
AS3630 – 63
Figure AS3630 – 49:
Recommended Inductor
If a different inductor is chosen, ensure similar DCR values and
at least0.6μH inductance at ILDCCD1 set by coil1_peak.
Inductor LDCDC2
LDCDC2 is used in parallel to LDCDC1 to power the LED during
flash. The whole current from the Supercap flows through
LDCDC2 therefore a high power inductor is required.
The fast switching frequency (4MHz) of the AS3649 allows for
the use of small SMDs for the external inductor. The saturation
current ISATURATION should be chosen to be above the
maximum value of ILDCCD214. The inductor should have very
low DC resistance (DCR) to reduce the I2R power losses - high
DCR values will reduce efficiency
Part Number
L
DCR
max. coil1_peak
setting for
Size
Manufacturer
Other modes
Flash
LQM32PN1R0MG0
1.0μH
>0.6μH @
3.0A
60m
Ω
2.0A
3.0A1
1. Flash pattern: 200ms/3A, 200ms pause, 200ms/3A, 2s then repeat again (no limit on the number of total cycles)
Alternative pattern with 1000ms/1.6A, 200ms pause, 200ms/3A, 200ms pause, 200ms/3A, 2s then repeat again. (no limit on the number of
total cycles)
3.2x2.5x0.9mm
max 1.0mm
height
Murata
www.murata.com
SPM3012T-1R0M
1.0μH
±20%
57m
Ω
±10%
2.5A
3.0A
(3.5A2)
2. Check with coil supplier
3.2x3x1.2
mm
height is max
TDK
www.tdk.com
CIG32W1R0MNE
1.0μH
>0.7μH @
2.7A
>0.6μH @
3.0A
60m
Ω
±25%
2.0A
3.0A
3.2x2.5mm
max 1.0mm
height
Samsung
Electro-Mechancs
www.sem.samsun
g.co.kr
CKP3225N1R0M
1.0μH
>0.6μH @
3.0A
<60m
Ω
1.0A
3.0A3
3. Check with coil supplier for worst case flash pattern.
3.2x2.5x0.9mm
max 1.0mm
height
Taiyo Yuden
www.t-yuden.com
MAMK2520T1R0M
1.0μH
>0.6μH@
2.75A
45m
Ω
2.5A
2.5A
2.5x2.0x1.2mm
height is max
14. Can be adjusted in I²C mode with register coil2_peak



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