rt8020 Richtek Technology Corporation, rt8020 Datasheet - Page 3

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

Functional Pin Description
Function Block Diagram
DS8020-03 August 2007
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.
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
No Connection or Connect to 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
www.richtek.com
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