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RT8020APQW 데이터 시트보기 (PDF) - Richtek Technology
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RT8020APQW
Dual High-Efficiency PWM Step-Down DC-DC Converter
Richtek Technology
RT8020APQW Datasheet PDF : 14 Pages
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RT8020
Typical Application Circuit
L2
2.2uH
V
IN2
RT8020
1
VIN2
EN2
12
C
IN2
4.7uF
2
LX2
3, Exposed Pad (13)
GND
R12
4
FB1
NC2
11
FB2
10
GND
9
5
NC1
8
LX1
C11
22pF
R11
850k
6
EN1
VIN1
7
V
OUT1
L1
2.2uH
C
OUT1
4.7uF
( )
V
OUTx
=
V
REF
×
1
+
Rx1
Rx2
C
OUT2
4.7uF
R21
850k
V
OUT2
C21
22pF
C
IN1
4.7uF
V
IN1
R22
Figure 1. Adjustable Voltage Regulator
L2
2.2uH
V
IN2
RT8020
1
VIN2
EN2
12
C
IN2
4.7uF
2
LX2
3, Exposed Pad (13)
GND
4
FB1
NC2
11
FB2
10
GND
9
5
NC1
LX1
8
6
EN1
VIN1
7
V
OUT1
C
OUT1
4.7uF
L1
2.2uH
V
OUT2
C
OUT2
4.7uF
C
IN1
4.7uF
V
IN1
V
OUTx
= 1.2V, 1.3V, 1.8V, 2.5V or 3.3V
Figure 2. Fixed Voltage Regulator
www.richtek.com
2
DS8020-03 August 2007
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