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EUP2561 Datasheet(PDF) 2 Page - Eutech Microelectronics Inc

Part # EUP2561
Description  26V Step-Up Converters for Two to Six White LEDs
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Manufacturer  EUTECH [Eutech Microelectronics Inc]
Direct Link  http://www.eutechmicro.com
Logo EUTECH - Eutech Microelectronics Inc

EUP2561 Datasheet(HTML) 2 Page - Eutech Microelectronics Inc

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EUP2561
DS2561 Ver1.0 Dec. 2006
2
Pin Configurations
Package Type
Pin
Configurations
DFN-8
(Top View)
Pin Description
PIN
Pin
DESCRIPTION
OUT
1
Regulated Output Voltage.
IN
2
Input Supply Voltage.
CTRL
3
Brightness Control Input. LED brightness is controlled by the voltage applied to
CTRL. Varying the voltage from 0.24V to 1.62V adjusts the brightness from dim to
bright, respectively. Any voltage above 1.62V does not increase brightness.
CS
4
Current-Sense Feedback Input. Connect a resistor from CS to GND to set the LED bias
current. The voltage at CS regulates to VCTRL / 10 or 0.162V, whichever is lower.
COMP
5
Compensation Input. Connect a 0.1µF capacitor (CCOMP) from COMP to GND.
CCOMP stabilizes the converter and controls soft-start. CCOMP discharges to GND
when in shutdown.
GND
6
Common Ground. Connect to PGND and the exposed pad directly under the IC.
PGND
7
Power Ground. Connect to GND and the exposed pad directly under the IC.
LX
8
Inductor Connection. This pin is high impedance during shutdown.


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