RT9181-18PB RICHTEK [Richtek Technology Corporation], RT9181-18PB Datasheet - Page 2

• Manufacturer Part Number: RT9181-18PB
• Description: 150mA LDO Regulator with PGOOD
• Manufacturer: RICHTEK [Richtek Technology Corporation]

RT9181
Function Block Diagram
Functional Pin Description
Timing Diagram
www.richtek.com
2
VIN
GND
EN
PGOOD
VOUT
Pin Name
PGOOD
V
OUT
Power Input Voltage
Ground
Chip Enable (Active High)
Power Good Indicator
Output Voltage
VIN
EN
V
PGOODH
90% max of V
Pin Function
Shutdown
Thermal
Control
Control
Fault
V
REF
OUT
t
D
Output Voltage
(normal)
Undervoltage
Power Good
(PG) 2.0ms typ.
Detection
Lockout
Control
Control
+
Delay
Timer
Gate
GOOD
Current
Limit
85% min of V
V
PGOODL
VOUT
PGOOD
GND
DS9181-14 March 2007
OUT
(normal)