EUP2584
Pin Configurations
Package Type
Pin
Configurations
SOT23-6
Pin Description
PIN
LX
GND
FB
EN
IN
OUT
SOT23-6
1
2
3
4
6
5
DESCRIPTION
Switch Pin. Connect inductor/diode here. Minimize trace area at this pin to reduce EMI.
Common Ground
Feedback Pin. Reference voltage is 0.25V. Connect cathode of lowest LED and resistor
here. Calculate resistor value according to the formula: R
FB
=0.25/I
LED
Chip Enable Pin. Connect to 1.4V or higher to enable device, 0.3V or less to disable
device.
Input Supply Voltage
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.
DS2584
Ver1.1
Mar. 2008
2
EUTECH [ EUTECH MICROELECTRONICS INC ]
