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AS3630 Folha de dados(PDF) 26 Page - ams AG

Nome de Peças AS3630
Descrição Electrónicos  8A Supercap Flash Driver
PDF  72 Pages
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Fabricante Electrônico  AMSCO [ams AG]
Página de início  http://www.ams.com
Logo AMSCO - ams AG

AS3630 Folha de dados(HTML) 26 Page - ams AG

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AS3630 – 26
8A Supercap Flash Driver
Flash Operation
Additionally the step up converter DCDC1 (from VIN using
LDCDC1), the step up converter DCDC2 (from Supercap using
LDCDC2) is used in parallel operating at high efficiency for the
flash operation. This allows to reduce the current for each of the
DCDC’s and therefore the size of the Supercap and/or current
required from battery:
Figure AS3630 – 22:
Flash DCDC1 and DCDC2 Parallel Operation to Reduce Current and Size of Supercap
The flash operation is enabled by mode_setting = “Flash” and
the timeout timer (register flash_timeout) defines the maximum
flash duration.
Note: If the voltage on VSUPERCAP drops below 2.55V, DCDC2
is automatically stopped (and the flash current is supplied by
DCDC1 only).
Once the flash is finished, the AS3630 will automatically select
the operating mode according to register mode_after_flash (see
page 51) shown in Figure 26:





 




 



 
  


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