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  Richtek Technology Electronic Components Datasheet  

RT9052 Datasheet

Single Channel LED Current Source Controller

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RT9052 pdf
RT9052
Single Channel LED Current Source Controller
General Description
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
effective.
The RT9052 comes in a small SOT-23-6 package.
Ordering Information
RT9052
Package Type
E : SOT-23-6
Note :
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.
Marking Information
EU= : Product Code
EU=DNN DNN : Date Code
Features
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
Applications
z LED Backlight applications
z Current Source
z Transistor Driver
Pin Configurations
(TOP VIEW)
VCC DRI FAULT
654
23
DIM GND ISET
SOT-23-6
Typical Application Circuit
VLED
5V 12V
R1
100k
WLED
RT9052
6 VCC
CIN
1µF
DRI 5
ISET 3
4 FAULT
GND 2
1 DIM
RB
RISET
DS9052-01 April 2011
www.richtek.com
1
Free Datasheet http://www.datasheet4u.com/


  Richtek Technology Electronic Components Datasheet  

RT9052 Datasheet

Single Channel LED Current Source Controller

No Preview Available !

RT9052 pdf
RT9052
Functional Pin Description
Pin No.
1
2
3
4
5
6
Pin Name
DIM
GND
ISET
FAULT
DRI
VCC
Pin Function
PWM Dimming Control Input.
Ground.
Current Setting Input.
FAULT Signal Open Drain Output.
Driver Output.
Power Supply Input.
Function Block Diagram
VCC
FAULT
GND
3ms
Delay
Reference
Voltage VREF
+
0.9 x VREF
+
-
Driver
-
DIM
DRI
ISET
www.richtek.com
2
DS9052-01 April 2011
Free Datasheet http://www.datasheet4u.com/


Part Number RT9052
Description Single Channel LED Current Source Controller
Maker Richtek
Total Page 9 Pages
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