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AS3722 bảng dữ liệu(PDF) 24 Page - ams-OSRAM AG

tên linh kiện AS3722
Giải thích chi tiết về linh kiện  Multi-Phase DCDC Controller PMIC
PDF  199 Pages
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nhà sản xuất  AMSOSRAM [ams-OSRAM AG]
Trang chủ  https://ams-osram.com/
Logo AMSOSRAM - ams-OSRAM AG

AS3722 bảng dữ liệu(HTML) 24 Page - ams-OSRAM AG

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ams Datasheet
Page 23
[v1-01] 2015-Sep-07
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AS3722 − Detailed Descriptions- Power Management Functions
Bit settings: sdX_low_noise=0
In this mode there is a minimum coil current necessary before
switching off the PMOS. As a result there are less pulses
necessary at low output loads, and therefore the efficiency at
low output load is increased. As drawback this mode increases
the ripple up to higher output currents.
The crossover point to power save operation is already reached
at reasonable high output currents (~10% of the DCDC current
limit).
Figure 13:
DC/DC Buck Dis-Continuous Mode & High Efficiency 1/2
DC/DC Buck Dis-Continuous Mode: Shows the DC/DC switching waveforms of for SD5 at about 60mA with the
low_noise bit deactivated.
Figure 14:
DC/DC Buck Dis-Continuous Mode & High Efficiency 2/2
DC/DC Buck Dis-Continuous Mode: Shows the DC/DC switching waveforms of for SD5 at about 10mA with the
low_noise bit deactivated.



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