RT9047
RT9047 is Low Dropout LDO manufactured by Richtek.
Description
The RT9047 is a 1A linear low dropout (LDO) voltage regulator which uses an N-MOSFET pass element in a voltage follower. The topology is relatively insensitive to output capacitor value and ESR, allowing a wide variety of load configurations. The N-MOSFET topology also allows very low dropout. Current consumption, when not enabled, is under 1μA and ideal for portable applications.
This device is protected by thermal shutdown and foldback current limit. The RT9047 is available an SOT-223-5 package.
Ordering Information
Note :
Package Type G5 : SOT-223-5
Lead Plating System G : Green (Halogen Free and Pb Free)
Richtek products are :
` Ro HS pliant and patible with the current require- ments of IPC/JEDEC J-STD-020.
` Suitable for use in Sn Pb or Pb-free soldering processes.
Features z Stable with Ceramic Capacitor z Input Voltage Range : 2.2V to 5.5V z Ultra Low Dropout Voltage : 130m V (typ.) at 1A z Low Reverse Leakage Current z Low Quiescent (<1μA) in Shutdown Mode z Thermal Shutdown and Current Limit z Available in Multiple Output Voltage Versions z Custom Outputs Available Using Factory z Ro HS pliant and Halogen Free
Applications z Tele/Networking Cards z Motherboards/Peripheral Cards z Wireless Infrastructure z Notebook puters z Battery Powered Systems z Set Top Boxes
Pin Configurations
(TOP VIEW)
Marking Information
RT9047 GG5YMDNN
RT9047GG5 : Product Number YMDNN : Date Code
1 2345
VIN VOUT GND(TAB)
FB EN
SOT-223-5
DS9047-03 November 2011
.richtek. 1
Typical Application Circuit
1 VIN
VOUT 2
CIN 4.7µF
R1 FB 4
Chip Enable 5 EN
R2
VOUT
= VFB × (1
+
R1 ) Volts R2
Note : Where VFB is the reference voltage with a typical value of 1.2V.
COUVTOUT 4.7µF
Functional Pin Description
Pin No.
Pin...
