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AS1170 bảng dữ liệu(PDF) 16 Page - OSRAM GmbH

tên linh kiện AS1170
Giải thích chi tiết về linh kiện  AS1170 High current LED/VCSEL driver
PDF  53 Pages
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nhà sản xuất  OSRAM [OSRAM GmbH]
Trang chủ  http://www.osram.com
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AS1170 bảng dữ liệu(HTML) 16 Page - OSRAM GmbH

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AS1170
Detailed description
Datasheet
• PUBLIC • Document Feedback
DS001083
• v2-00 • 2024-Feb-05
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Detailed description
The AS1170 is a high performance DCDC step up converter with internal PMOS and NMOS
switches. Its output is connected to one or two flash LEDs1 with an internal current sink. The
device is controlled by the pins SDA and SCL in I²C mode.
The actual operating mode like standby, assist light, indicator or flash mode, can then be
chosen by the interface. If not in standby mode, the device automatically enters shutdown
mode by keeping SCL low for more than t2.
The AS1170 includes a fixed frequency DCDC step-up with accurate startup control. Together
with the current sink (on LED_OUT1/2) it includes several protection and safety functions.
Figure 16: Internal circuit diagram
1 If two LEDs are connected, it is possible to operate each of the two LEDs individually as the LED current can be selected
individually.
2 Following registers are reset to their default value if the timeout expires: out_on=0, mode_setting=00, const_v_mode=0.



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