cui .com date 11/01/2012 page 1 of 6 series: vld25-smt description: led driver date 11/01/2012 page 1 of 6 features ? power led driver ? wide input and output voltage range ? smt package ? constant current output ? pwm dimming and analogue dimming ? short circuit protection ? analog dimming ? high efficiency up to 96% rohs model input voltage output voltage output current ripple and noise dimming control ef ciency range (vdc) range (vdc) range (ma) max (mvp-p) typ (%) vld25-300-smt 5.5 ~ 48 3.3 ~ 36 0 ~ 300 120 pwm+analog 96 vld25-350-smt 5.5 ~ 48 3.3 ~ 36 0 ~ 350 120 pwm+analog 96 vld25-500-smt 5.5 ~ 48 3.3 ~ 36 0 ~ 500 120 pwm+analog 96 vld25-600-smt 5.5 ~ 48 3.3 ~ 36 0 ~ 600 120 pwm+analog 96 vld25-700-smt 5.5 ~ 48 3.3 ~ 36 0 ~ 700 120 pwm+analog 96 part number key vld25 - xxx -smt - x output voltage base number packaging style package options "blank" = standard tr = tape & reel
cui .com date 11/01/2012 page 2 of 6 cui 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 a lter capacitor 1 f 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 coef cient -40 ~ 71c ambient 0.015 %/c capacitive load 1,000 f 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
cui .com date 11/01/2012 page 3 of 6 cui inc series: vld25-smt description: led driver 3.04 0.120 2.54 0.100 15.24 0.600 5 max (6 plcs) 0.040 1.02 18.10 0.713 0.50 0.020 (6 plcs) 16 10 9 8 7 1 7.50 0.295 0.939 23.86 8.00 0.315 a 13.70 0.539 detail a scale 8 : 1 0.055 0.20 1.40 0.25 0.010 mechanical drawing pin connections pin function 1 gnd 7 on/off/pwm 8 -vout 9 +vout 10 analog dimming 16 vin recommended footprint (top view) unit: mm(inch) pin tolerances: 0.10mm(0.039inch) general tolerances: 0.25mm(0.010inch) 7 10 9 1 16 8 17.20 [0.677] 2.10 [0.100] 2.54 [0.100] 1.00 [0.039] grid: 2.54 x 2.54 mm
cui .com date 11/01/2012 page 4 of 6 cui inc series: vld25-smt description: led driver 1. digital dimming control 2. analog dimming control and application example application notes 50% duty cycle 80% duty cycle output current output current(led appears dimmer) output current(led appears brighter) 20% duty cycle ouput current voltage control (0-15 v max.) 9 9 9 9 9 9 9 analog input voltage 1st led last led vld25-smt +vin gnd 5k1 5k6 on/off (optional) 0-10v 16 1 9 8 7 10 for the rated frequency pwm dimming, the output current of driver matters to the pulse width of the pwm signal, and the numerat e please refer to the following formula: i o,set refers to the expected output current value. i o,norm refers to the rated output current d refers to the pulse width of the pwm signal t refers to the cycle of the pwm signal note: the formula only supplies as a reference, and the output current may be a little deviation with different load. the ton(m in) of pwm signal must be greater than 0.7ms, or the driver can?t be operated normally. it is natural for the driver to generate an audibly noise in dimm ing process, because the frequency of the control circuit is within human audibly range (20hz~20khz). in order to avoid the human eye can observe the le d ashes, the pwm dimming frequency is recommended to set above 100hz. i o,set = (dt-0.6) i o,nom t
cui .com date 11/01/2012 page 5 of 6 cui inc series: vld25-smt description: led driver 3. emc recommended circuit 4. recommended re ow soldering pro le 1st led last led vld25-smt +vin gnd 16 1 7 9 8 470uf 1.0uf (pwm dim/on/off) 10 (analog dim) +vout - vout + 1.25mh 2.2uf 1.0uf smcg51 > vin gnd +vout -vout load tvs c0 c1 c2 c3 r1 lcm vin dim gnd vo+ vo- vld25-smt 2 dim >? 1 emi/rfi conducted en55022 recommended circuit emi/emc recommended circuit notes: 1. dim pin is the module's pwm dimming pin 2. while adding circuit, it may extend the pwm dimming output reaction time emi/emc standard item standard level predicate remark emi conducted en 55015 power port quali cation add external circuit 1 esd iec 61000-4-2:2001 level 2 b +4kv add external circuit 2 surge iec 61000-4-5:2004 level 2 b +1kv add external circuit 1 eft iec 61000-4-4:2004 level 2 b +1kv add external circuit 1 recommended parameters components specifications tvs smcj48a, 1500 w (bringtking) lcm 6.8 h cd43 (ceaiya) c0 470 f / 50 v (capxon) c1 4.7 f / 50 v 1210 (torch) c2 2.2 f / 50 v 1210 (torch) c3 470 pf / 100 v 0805 (torch) r1 680 0805 (can be replaced by inductance or magnetic bead) 0 50 100 150 200 250 time (sec.) t e m p e r a t u r e ( c ) 60 max (>220 c) sec 220 c 10 max sec peak.temp 240 c
date 11/01/2012 page 6 of 6 cui inc series: vld25-smt description: led driver cui offers a two (2) year limited warranty. complete warranty information is listed on our website. cui reserves the right to make changes to the product at any time without notice. information provided by cui is believed to b e accurate and reliable. however, no responsibility is assumed by cui for its use, nor for any infringements of patents or other rights of third parties which may result from its use . cui products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. a critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. headquarters 20050 sw 112th ave. tualatin, or 97062 800.275.4899 fax 503.612.2383 cui .com techsupport@cui.com rev. description date 1.0 initial release 02/20/2012 1.01 v-in nity branding removed 09/07/2012 1.02 added tr package option 11/01/2012 the revision history provided is for informational purposes only and is believed to be accurate. revision history
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