EUP2584A
Pin Configurations
Package Type
Pin
Configurations
SOT23-6
Pin Description
PIN
EN
OUT
IN
LX
GND
FB
SOT23-6
1
2
3
4
5
6
DESCRIPTION
Chip Enable Pin. Connect to 1.4V or higher to enable device, 0.3V or less to disable
device.
Overvoltage Sense. When V
OUT
is greater than 27V, the internal N-channel MOSFET
turns off until V
OUT
drops below 25V, then the IC reenters start. Connect a 1uF capacitor
from OUT to GND.
Input Supply Voltage
Switch Pin. Connect inductor/diode here. Minimize trace area at this pin to reduce EMI.
Common Ground
Feedback Pin. Reference voltage is 0.3V. Connect cathode of lowest LED and resistor
here. Calculate resistor value according to the formula: R
FB
=0.3/I
LED
DS2584A Ver1.0
Nov. 2007
2
EUTECH [ EUTECH MICROELECTRONICS INC ]
