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ACT6330 bảng dữ liệu(PDF) 8 Page - Active-Semi, Inc

tên linh kiện ACT6330
Giải thích chi tiết về linh kiện  Dual PWM Step-Up DC/DCs in TQFN33
PDF  14 Pages
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nhà sản xuất  ACTIVE-SEMI [Active-Semi, Inc]
Trang chủ  http://www.active-semi.com
Logo ACTIVE-SEMI - Active-Semi, Inc

ACT6330 bảng dữ liệu(HTML) 8 Page - Active-Semi, Inc

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ACT6330
Rev0, 02-Apr-08
WLED BIAS DC/DC CONVERTER (REG1)
Innovative Power
TM
- 8 -
www.active-semi.com
Copyright © 2008 Active-Semi, Inc.
ActivePMU
TM is a trademark of Active-Semi.
Setting the LED Bias Current
The LED bias current is set by a resistor connected
from FB1 and ground, and regulator is satisfied
when the LED current is sufficient to generate
250mV across this resistor. Once the bias current is
programmed, the LED current can be adjusted us-
ing the ACT6330’s Direct-PWM feature. REG1 is
also compatible with a variety of well-know LED
dimming circuit, such as with a DC control voltage
and a filtered PWM signal.
Board Layout
Typical for all switching power supplies, the layout
is an important step in design, especially at high
peak current and switching frequencies, please re-
fer to PCB Layout Consideration for more informa-
tion.



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