cui.com
date 11/01/2012 │ page 2 of 6CUI Inc │ SERIES: VLD25-SMT │ DESCRIPTION: LED DRIVER
INPUT
parameter conditions/description min typ max units
operating input voltage
absolute max before device failure
operating input range
5
5.5 24
55
48
Vdc
Vdc
quiescent input
current in off mode
Vin = 24 V, V
r
< 0.6 V 400 μA
fi lter capacitor 1 μF
remote on/off
dc-dc ON (Vr on pin 7)
dc-dc OFF
open or 2.8 V < Vr < 6V
Vr < 0.6 V
remote pin current Vr = 5V 1mA
PWM frequency 0.2 kHz
input voltage - analog dimming Vin = 5.5 ~ 4.8 V 0 15 V
control voltage -
analog dimming
full on
full off
0.15
4.3
0.20
4.5
0.25
4.7
V
V
driving current -
analog dimming
Vr = 5 V 0.6 A
OUTPUT
parameter conditions/description min typ max units
voltage range Vin = 48 V , Vo = 3.3 V ~ 36 V 3.3 36 Vdc
voltage drop Vin = 5.5 ~ 48 V, 1 ~ 10 LED 2 4 Vdc
current accuracy ±2 ±3 %
output current range -
analog dimming
Vin = 5.5 ~ 48 V, 1 ~ 10 LED 0 100 %
current stability Vin = 48 V, Vo = 3.3 V ~ 36 V ±1 %
temperature coeffi cient -40 ~ 71°C ambient ±0.015 %/°C
capacitive load 1,000 μF
PROTECTIONS
parameter conditions/description min typ max units
short circuit protection continuous automatic recovery
SAFETY AND COMPLIANCE
parameter conditions/description
EMI/EMC EN 55015 power port, EN 55015, IEC/EN 61000-4-(2, 3, 4, 5, 6)
RoHS compliant yes
ENVIRONMENTAL
parameter conditions/description min typ max units
operating temperature
300/350 mA
500/600/700 mA
-40
-40
85
71
°C
°C
storage temperature -55 125 °C
maximum case temperature 100 °C
MECHANICAL
parameter conditions/description min typ max units
dimensions 0.94 x 0.71 x 0.31 inch (23.86 x 18.1 x 8.0 mm)
case material epoxy resin (UL94-V0)
weight 6g
For more information, please visit the product page.
