RT8020GQW Richtek USA Inc, RT8020GQW Datasheet - Page 2

• Manufacturer Part Number: RT8020GQW
• Description: IC DCDC CONV STP-DN DUAL 12WDFN
• Manufacturer: Richtek USA Inc
• Type: Step-Down (Buck), PWMr

Specifications of RT8020GQW

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.6 V ~ 5.5 V
• Current - Output: 1A
• Frequency - Switching: 1.5MHz
• Voltage - Input: 2.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 12-WFDFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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
4.7µF
C
C11
22pF
R12
IN2
V
V
OUT1
IN2
3, Exposed Pad (13)
4.7µF
C
3, Exposed Pad (13)
IN2
R11
850k
C
4.7µF
Figure 1. Adjustable Voltage Regulator
C
4.7µF
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
2.2µH
2.2µH
2.2µH
2.2µH
L2
L1
L2
L1
GND
VIN1
NC2
GND
VIN1 7
EN2
FB2
LX1
NC2
EN2
FB2
LX1
12
11
10
9
8
7
12
11
10
9
8
4.7µF
C
4.7µF
C
C
4.7µF
IN1
IN1
OUT2
850k
R21
V
V
IN1
C
IN1
4.7µF
OUT2
V
OUT2
R22
22pF
C21
V
OUT2
DS8020-04 February 2011