EUP2518
Pin Configurations
Package Type
Pin
Configurations
TSOT23-6
Pin Description
PIN
LX
GND
FB
EN
OUT
IN
TSOT23-6
1
2
3
4
5
6
DESCRIPTION
Switch Pin. Connect inductor/diode here. Minimize trace area at this pin to reduce EMI.
Common Ground
Feedback Pin. Reference voltage is 104mV. Connect cathode of lowest LED and resistor
here. Calculate resistor value according to the formula: R
FB
=104/I
LED
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 0.22uF
capacitor from OUT to GND.
Input Supply Voltage
DS2518 Ver1.0 Mar. 2008
2
EUTECH [ EUTECH MICROELECTRONICS INC ]
