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RT4531WSC датащи(PDF) 13 Page - Richtek Technology Corporation

номер детали RT4531WSC
подробное описание детали  Dual Channel 10s2p WLED Drivers
PDF  14 Pages
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производитель  RICHTEK [Richtek Technology Corporation]
домашняя страница  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT4531WSC датащи(HTML) 13 Page - Richtek Technology Corporation

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RT4531
DS4531-01
July 2016
www.richtek.com
©
Copyright
2016 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
Table 1. Recommended Components for Typical Application Circuit
Reference
Part Number
Description
Manufacture
Schottky Diode
SS0540
Schottky Diode
PANJIT
C1
EMK107BJ105MA-T
Capacitor, Ceramic, 1
F/16V X5R
Taiyo Yuden
R1
RC0603FR
Resistor 63.4k
, 1%
YAGEO
C2
GRM188R61H105KAAL
MLCC,0603,X5R,50V,1uF
Taiyo Yuden
L
NR4018T4R7M
Inductor, 4.7
H
Taiyo Yuden
C3
EMK107BJ105MA-T
Capacitor, Ceramic, 1
F/16V X5R
Murata
R2
RC0603FR
Resistor 10
, 1%
YAGEO
Figure 4. PCB Layout Guide
A1
A2
A3
B1
B2
B3
C1
C2
C3
ISET
PWM
EN
VIN
SW
GND
IFB1
IFB2
AGND
VBAT
GND
C1
R2
C3
C2
GND
R1
CIN should be placed as
closed as possible to VIN pin
for good filtering.
Cout must be placed
between GND and
VOUT to reduce noise.
The inductor should be placed as close as
possible to the switch pin to minimize the noise
coupling into other circuits. SW node copper
area should be minimized for reducing EMI.
It recommended to separate the
ISET line and PWM line that avoid
the PWM signal couple to ISET.



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