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AW9920STR Datasheet(PDF) 12 Page - Shanghai awinic technology co.,ltd

Part # AW9920STR
Description  Inductor-Boost White LED Driver with Ultra-low EMI and PWM to DC Dimming
PDF  16 Pages
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Manufacturer  AWINIC [Shanghai awinic technology co.,ltd]
Direct Link  http://www.awinic.com.cn/index.php
Logo AWINIC - Shanghai awinic technology co.,ltd

AW9920STR Datasheet(HTML) 12 Page - Shanghai awinic technology co.,ltd

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AW9920
September 2017 V1.0
www.awinic.com.cn
12
Copyright © 2017 SHANGHAI AWINIC TECHNOLOGY CO., LTD
PCB LAYOUT CONSIDERATION
Follow the advice below when designing PCB layout to optimize the performance of AW9920:
Place Cin, Cout closed to Vin, Vout respectively and ground well to decrease noise.
To reduce parametric resistance and inductance, keep the Vin-Inductor-Schottky-Output
in a straight line and route as short and wide as possible.
To reduce parametric influence, minimize the SW-VOUT-GND high-frequency and high-
voltage loop as shown below.
SW
1
2
GND
3
EN
VIN
5
4
ILED
Vin
L1
D1
Cout
Cin
Vout
GND
GND
EN
Minimize the SW-GND loop area
Place close to chip
Figure 6
PCB Layout Reference Design



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