cui .com date 11/28/2012 page 1 of 6 series: vld25-dip description: led driver date 11/28/2012 page 1 of 6 features ? power led driver ? wide input and output voltage range ? dip package ? constant current output ? pwm dimming and analog dimming ? short circuit protection ? high efficiency up to 95% part number key vld25 - xxx -dip base number output current 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-DIP 5.5 ~ 46 3.3 ~ 36 0 ~ 300 120 pwm+analog 95 vld25-350-dip 5.5 ~ 46 3.3 ~ 36 0 ~ 350 120 pwm+analog 95 vld25-500-dip 5.5 ~ 46 3.3 ~ 36 0 ~ 500 120 pwm+analog 95 vld25-600-dip 5.5 ~ 46 3.3 ~ 36 0 ~ 600 120 pwm+analog 95 vld25-700-dip 5.5 ~ 46 3.3 ~ 36 0 ~ 700 120 pwm+analog 95
cui .com date 11/28/2012 page 2 of 6 cui inc series: vld25-dip 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 46 vdc vdc quiescent input current in off mode vin = 24 v, vc < 0.6 v 400 a lter capacitor 1 f remote on/off dc-dc on dc-dc off open or 2.8 v < vc < 6v vc < 0.6 v remote pin current vc = 5v 1ma pwm frequency 0.2 khz input voltage - analog dimming vin = 5.5 ~ 4.6 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 vc = 5 v 0.2 a output parameter conditions/description min typ max units voltage range vin = 46 v , vo = 3.3 v ~ 36 v 3.3 36 vdc voltage drop vin = 5.5 ~ 46 v, 1 ~ 10 led 2 3 4 vdc current accuracy 300~600 ma 700 ma 3 5 5 7 % % output current range - analog dimming vin = 5.5 ~ 46 v, 1 ~ 10 led 0 100 % current stability vin = 46 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, cispr22 class b, 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
cui .com date 11/28/2012 page 3 of 6 cui inc series: vld25-dip description: led driver 10.20 [0.401] 7.62 [0.300] 1 4 3 5 6 9.50 [0.374] 2 2.80 [0.898] 10.20 [0.402] 7.62 [0.300] 2.54 [0.100] 17.78 [0.700] 9.50 [0.374] 4.10 [0.161] 0.50 [0.020] ? 0.50 [0.020] (bottom view) side view 2 mechanical drawing pin connections pin function 1 vin 2 analog dimming 3 on/off/pwm 4 gnd 5 -vout 6 +vout recommended footprint (top view) unit: mm(inch) pin tolerances: 0.10mm(0.039inch) general tolerances: 0.25mm(0.010inch) 2.5 4 [0.100 ] 17.78[0.700] 2.54 [0.100] ? 0.80 [0.031] 1 4 3 5 6 2 mechanical parameter conditions/description min typ max units dimensions 0.898 x 0.402 x 0.535 inch (22.80 x 10.20 x 13.60 mm) case material epoxy resin (ul94-v0) weight 4.3 g operating temp.( ) c derating curve
cui .com date 11/28/2012 page 4 of 6 cui inc series: vld25-dip description: led driver 1. typical application circuits 2. digital dimming control 3. analog dimming control and application example application notes 1st led last led vld25-dip +vi n gnd 1 4 3 6 5 (pwm dim/on/off) 2 (analog dimming control) +vout -vout 1st led last led 6 5 +vin gn d 1 4 3 (pwm dim/on/off) 2 +vout -vout ptc ptc series application parallel-series application vld25-dip (analog dimming control) ouput current voltage control (0-15 v max.) 9 9 9 9 9 9 9 analog input voltage 1st led last led vld25-dip +vin gnd 15k 6k8 on/off (optional) 0-10v 1 4 6 5 3 2 formula for output current: 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: this formula is only supplied as a reference and the output current may be deviated from for different load conditions. t he ton(min) of pwm signal must be greater than 0.8ms, otherwise the driver cannot be operated normally. it is natural for the driver to generate audible noise during dimming process because the frequency of the control circuit is within human audible range (20hz~20khz). in order to make the led ashes not visible to human eye, the pwm dimming frequency is recommended to be set above 100hz. pwm curve (vin=24 v, 5 leds) i o,set = (dt-0.8) i o,nom t pwm digital control signal 0 1 0 1 0 1 0 1 0 1 pwm digital control signal pwm digital control signal output current output current(led appears bright) output current(led appears dim) to protect the led(s), you could connect a ptc to input of all channels as shown in application circuit. note: negative output terminal should not conneted to gnd. module may be damaged.
cui .com date 11/28/2012 page 5 of 6 cui inc series: vld25-dip description: led driver 4. emc recommended circuit vld25-dip > vin gnd tvs c1 c2 c3 c4 c5 l 1 +vout -vout c6 r1 dim >? 1 4 6 3 5 1st led last led 1 emi/emc recommended circuit recommended parameters components specifications tvs smc51a, 1500 w (on) l1 cd53-82 h (ceaiya) c1 470 f/100v (ncc) c2 225k/50v 1210 x7r (torch) c3 104k/50v 0805 x7r (torch) c4 105k/50v 0805 x7r (torch) c5 102k/2000v 1210 (tdk) c6 470pf/100v 0805 (torch) r1 680 0805 (can be replaced by inductance or magnetic bead)
date 11/28/2012 page 6 of 6 cui inc series: vld25-dip 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 10/15/2012 1.01 misc. updates 11/02/2012 1.02 added product photo 11/28/2012 the revision history provided is for informational purposes only and is believed to be accurate. revision history
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