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AS1170 数据表(PDF) 24 Page - OSRAM GmbH |
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AS1170 数据表(HTML) 24 Page - OSRAM GmbH |
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24 / 53 page  AS1170 Detailed description Datasheet • PUBLIC • Document Feedback DS001083 • v2-00 • 2024-Feb-05 24 / 53 / The internal circuit for low voltage current reductions are shown in Figure 20. Figure 20: Low voltage current reduction internal circuit A mobile phone camera flash system can trigger a diagnostic flash and a main-flash: The diagnostic flash is initiated by the processor. After this diagnostic flash, the determined maximum flash current can be read back through the I²C interface from register led_current_min and used for the setting for the main flash. Therefore the current in the main- flash is constant and additionally the camera system can use this current for picture quality adjustments. |
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