RT9198_08 Datasheet, PDF (3/18 Pages) Richtek Technology Corporation – 300mA, Low Noise, Ultra-Fast CMOS LDO Regulator

RT9198/A
Functional Pin Description
Pin Name
Pin Function
EN
Chip Enable (Active High). Note that this pin is high impedance. There should be a pull low
100kΩ resistor connected to GND when the control signal is floating.
Chip Enable (Active Low). Note that this pin is high impedance. There should be a pull high
EN
100kΩ resistor connected to VIN when the control signal is floating.
NC
No Internal Connection.
GND, Exposed Pad
Ground. The exposed pad must be soldered to a large PCB and connected to GND for
maximum power dissipation.
VOUT
Output Voltage.
VI N
Input Voltage.
Function Block Diagram
EN/EN
V_REF
Shutdown
and
Logic Control
-
Error
Amplifier
MOS Driver
Current-Limit
and
Thermal
Protection
VIN
VOUT
GND
DS9198/A-12 May 2008
www.richtek.com
3