EUP2561
Pin Configurations
Package Type
Pin Configurations
(Top View)
DFN-8
Pin Description
PIN
OUT
IN
Pin
1
2
DESCRIPTION
Regulated Output Voltage.
Input Supply Voltage.
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.
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.
CTRL
CS
3
4
5
Compensation Input. Connect a 0.1µF capacitor (C
) from COMP to GND.
COMP
COMP
C
stabilizes the converter and controls soft-start. C
discharges to GND
COMP
COMP
when in shutdown.
GND
PGND
LX
6
7
8
Common Ground. Connect to PGND and the exposed pad directly under the IC.
Power Ground. Connect to GND and the exposed pad directly under the IC.
Inductor Connection. This pin is high impedance during shutdown.
DS2561 Ver1.0 Dec. 2006
2
EUTECH [ EUTECH MICROELECTRONICS INC ]
