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RT9166/A
Preliminary
2
DS9166/A-09 October 2004
www.richtek.com
Typical Application Circuit
Functional Pin Description
Function Block Diagram
Note: To prevent oscillation, a 1
µµµµµF minimum X7R or X5R dielectric is strongly recommended if ceramics are
used as input/output capacitors. When using the Y5V dielectric, the minimum value of the input/output
capacitance that can be used for stable over full operating temperature range is 3.3
µµµµµF. (see Application
Information Section for further details)
Pin Name
Pin Function
VIN
Supply Input
VOUT
Regulator Output
GND
Common Ground
VIN
GND
VOUT
RT9166/A
C
OUT
1uF
C
IN
1uF
V
IN
V
OUT
Current
Limiting
Sensor
Thermal
Shutdown
-
Error
Amplifier
1.2V
Reference
VIN
GND
VOUT