RT8008
Functional Pin Description
Pin Number
Pin Name
Pin Function
1
2
3
4
5
EN
GND
LX
Chip Enable (Active High, do not leave EN pin floating, and V < V + 0.6V).
EN IN
Ground.
Pin for Switching.
Power Input.
VIN
FB/VOUT
Feedback Input Pin.
Function Block Diagram
VIN
EN
RS1
OSC &
Shutdown
Control
Current
Limit
Detector
Slope
Compensation
Current
Sense
Control
Logic
Driver
LX
PWM
Comparator
FB/VOUT
Error
Amplifier
RC
Zero
Detector
UVLO &
Power Good
Detector
RS2
COMP
V
REF
GND
DS8008-07 March 2011
www.richtek.com
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