RT8020GQW Richtek USA Inc, RT8020GQW Datasheet - Page 3

• 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

Functional Pin Description
Function Block Diagram
DS8020-04 February 2011
Exposed Pad (13)
Pin No.
5, 11
3, 9,
10
12
1
2
4
6
7
8
FBx
VIN2
LX2
GND
FB1
NC1, NC2
EN1
VIN1
LX1
FB2
EN2
Pin Name
Compensation
Slope
Amplifier
COMP
Error
Power Input of Channel 2.
Pin for Switching of Channel 2.
Ground. The exposed pad must be soldered to a large PCB and connected to
GND for maximum power dissipation.
Feedback of Channel 1.
No Connection or Connect to V
Chip Enable of Channel 1 (Active High). V
Power Input of Channel 1.
Pin for Switching of Channel 1.
Feedback of Channel 2.
Chip Enable of Channel 2 (Active High). V
RC
Comparator
Shutdown
OSC and
Current
Control
Sense
PWM
ENx
Power Good
UVLO and
Detector
Current Limit
V
Detector
Control
REF
Logic
IN
.
Pin Function
Driver
EN1
EN2
≦ V
≦ V
RS2
RS1
IN1.
IN2.
VINx
LXx
GND
RT8020
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