rt8020 Richtek Technology Corporation, rt8020 Datasheet - Page 2

• Manufacturer Part Number: rt8020
• Description: Dual High-efficiency Step-down Dc-dc Converter
• Manufacturer: Richtek Technology Corporation

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