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PDF RT9052 Data sheet ( Hoja de datos )
| Número de pieza | RT9052 | |
| Descripción | Single Channel LED Current Source Controller | |
| Fabricantes | Richtek | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RT9052 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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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/
1 page  
Typical Operating Characteristics
Standby Current vs. VCC Input Voltage
1.0
VDIM = 0V
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
3.5 5.0 6.5 8.0 9.5 11.0 12.5 14.0
VCC Input Voltage (V)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
-50
Supply Current vs. Temperature
VDIM = 3V
-25 0
25 50 75 100 125
Temperature (°C)
DIM Threshold Voltage vs. Temperature
1.0
VCC = 12V
0.9
Rising
0.8
Falling
0.7
0.6
0.5
0.4
-50
-25
0 25 50 75
Temperature (°C)
100 125
DS9052-01 April 2011
RT9052
Supply Current vs. VCC Input Voltage
1.0
VDIM = 3V
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
3.5 5.0 6.5 8.0 9.5 11.0 12.5 14.0
VCC Input Voltage (V)
DIM Threshold Voltage vs. VCC Input Voltage
1.0
0.9
0.8 Rising
0.7 Falling
0.6
0.5
0.4
3.5 5.0 6.5 8.0 9.5 11.0 12.5 14.0
VCC Input Voltage (V)
0.820
0.815
ISET Voltage vs. VCC Input Voltage
VDIM = 3V
0.810
0.805
0.800
0.795
0.790
0.785
0.780
3.5 5.0 6.5 8.0 9.5 11.0 12.5 14.0
VCC Input Voltage (V)
www.richtek.com
5
Free Datasheet http://www.datasheet4u.com/
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet RT9052.PDF ] | |
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