Single Channel LED Current Source Controller
The RT9052 is a low cost, single channel LED current
source controller with a specific FAULT detector. The part
can drive an external NPN-BJT for various applications.
The RT9052 is operated with Vcc power ranging from 3.8V
to 13.5V. With such a topology, it's very flexible and cost
The RT9052 comes in a small SOT-23-6 package.
E : SOT-23-6
Lead Plating System
G : Green (Halogen Free and Pb Free)
Richtek products are :
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
EU= : Product Code
EU=DNN DNN : Date Code
z 3.8V to 13.5V Operation Voltage
z Voltage Reference 0.8V with ±2% High Accuracy
z FAULT Indicator with Delay
z Dimming Control by PWM
z Small Footprint Package SOT-23-6
z RoHS Compliant and Halogen Free
z LED Backlight applications
z Current Source
z Transistor Driver
VCC DRI FAULT
DIM GND ISET
Typical Application Circuit
DS9052-01 April 2011
Free Datasheet http://www.datasheet4u.com/