for more information, please visit the product page. ????????? ?????????????????? cui .com 09/12/2018 1 of 10 series : v78e-500-smt description: non-isolated dc switching regulator features ? 500 ma of output current ? efficiency up to 95% ? smt package ? industrial operating temp -40~+85c ? designed to meet iec/en 62368-1 ? industry standard footprint ? no load input current of 0.2 ma ? output short circuit protection on output model input voltage 1 output voltage output current output power ripple & noise 2 efciency 3 typ (vdc) range (vdc) (vdc) max (ma) max (w) max (mvp-p) typ (%) v78e01-500-smt 12 4.75~28 1.5 500 0.75 50 76 v78e02-500-smt 12 4.75~32 2.5 500 1.25 50 81 V78E03-500-SMT 24 4.75~36 3.3 500 1.65 50 86 v78e05-500-smt 24 6.5~36 5 500 2.5 50 90 v78e06-500-smt 24 8~36 6.5 500 3.25 50 92 v78e09-500-smt 24 12~36 9 500 4.5 50 93 v78e12-500-smt 24 15~36 12 500 6 50 94 v78e15-500-smt 24 19~36 15 500 7.5 50 95 notes: 1. for input voltages higher than 30 vdc, a 22 f / 50 v input capacitor is required. 2. tested at nominal input, 20 mhz bandwidth, with 10 f electrolytic and 1 f ceramic capacitor on the output. for 1.5~3.3 vdc output models, tested at 20~100% load. for all other models, tested at 10~100% load. at loads below 20% for 1.5~3.3 vdc output models, the max ripple and noise will be 100 mvp-p. at loads below 10% for all other models, the max ripple and noise will be 150 mvp-p. 3. measured at min vin, full load. 4. all specifcations are measured at ta=25c, humidity < 75%, nominal input voltage, and rated output load unless otherwise specifed. part number key base number v78e xx -500-smt-tr output voltage output current date page
for more information, please visit the product page. ?????????????????? cui .com date 09/12/2018 page 2 of 10 cui inc series : v78e-500-smt description: non-isolated dc switching regulator input parameter conditions/description min typ max units operating input voltage 5 4.75 36 vdc flter capacitor flter input reverse polartiy protection no no-load input current 0.2 1.5 ma remote on/of 6 turn on (3.2~8 vdc or open circuit) turn of (<0.8 vdc) input current when switched of 0.03 0.1 ma note: 5. see model section on page 1 for specifc input voltage ranges. 6. the voltage of remote on/off pin is relative to gnd pin. output parameter conditions/description min typ max units maximum capacitive load 7 680 f voltage accuracy at full load, input voltage range 1.5, 2.5, 3.3 vdc output models all other models 2 2 4 3 % % line regulation at full load, input voltage range 0.2 0.4 % load regulation at 10~100 % load, input voltage range 1.5, 2.5 vdc output models all other models 1 0.6 % % voltage adjustment input voltage range 10 %vo switching frequency at full load, input voltage range 1.5 vdc output model all other models 370 700 khz khz transient recovery time at nominal input voltage, 25% load step change 0.2 1 ms transient response deviation at nominal input voltage, 25% load step change 50 200 mv temperature coefcient operating temperature -40 c to +85 c 0.03 %/c note: 7. the maximum capacitive load was tested at nominal input voltage, full load. protections parameter conditions/description min typ max units short circuit protection continuous, auto recovery safety and compliance parameter conditions/description min typ max units safety approvals ce conducted emissions cispr32/en55032, class b (external circuit required, see figure 3-b) radiated emissions cispr32/en55032, class b (external circuit required, see figure 3-b) esd iec/en61000-4-2, contact 4kv, class b radiated immunity iec/en61000-4-3, 10v/m, class a eft/burst iec/en61000-4-4, 1kv, class b (external circuit required, see figure 3-a) surge iec/en61000-4-5, line-line 1kv, class b (external circuit required, see figure 3-a) conducted immunity iec/en61000-4-6, 3 vr.m.s, class a mtbf as per mil-hdbk-217f, 25c 2,000,000 hours rohs yes
for more information, please visit the product page. ?????????????????? cui .com date 09/12/2018 page 3 of 10 cui inc series : v78e-500-smt description: non-isolated dc switching regulator time (sec) t emper ature (c) pe ak t emp 245c (max) 60 sec max (>217c) 250 245 217 200 150 100 50 0 environmental parameter conditions/description min typ max units operating temperature see derating curve -40 85 c storage temperature -55 125 c storage humidity non-condensing 95 % solderability parameter conditions/description min typ max units refow soldering see refow profle, refer to ipc/jedec j-std-020d.1 245 c mechanical parameter conditions/description min typ max units dimensions 15.24 x 8.50 x 8.25 [0.60 x 0.335 x 0.325 inch] mm case material black fame-retardant and heat resistant plastic (ul94v-0) weight 1.5 g mechanical drawing units: mm [inch] tolerance: 0.50[0.020] pin section tolerance: 0.10[0.004] pin connections pin function 1 +vin 2 +vin 3 gnd 4 +vout 5 +vout 6 v adj 7 gnd 10 remote on/of recommended pcb layout top view
for more information, please visit the product page. ?????????????????? cui .com date 09/12/2018 page 4 of 10 cui inc series : v78e-500-smt description: non-isolated dc switching regulator derating curve ambient t emper ature (c) load (% ) -40 60 80 100 40 20 04 08 5 120 120 71 0 efficiency curves 4.75 7 10 12 15 18 20 22 25 28 85 80 efficiency (% ) 75 70 input v oltage (vdc) 90 65 60 55 50 45 40 5 10 20 30 40 50 60 70 80 90 100 90 80 70 60 50 efficiency (% ) output current (% ) 100 40 30 0 10 20 v78e01-500-smt efciency curve efciency vs. input voltage (at full load) v78e01-500-smt efciency curve efciency vs. load current (at vin nominal) 4.75 8 11 14 17 20 23 26 29 32 85 80 efficiency (% ) 75 70 input v oltage (vdc) 90 65 60 55 50 45 40 v78e02-500-smt efciency curve efciency vs. input voltage (at full load) v78e02-500-smt efciency curve efciency vs. load current (at vin nominal) 5 10 20 30 40 50 60 70 80 90 100 90 80 70 60 50 efficiency (% ) output current (% ) 100 40 30 0 10 20 temperature derating curve (natural convection)
for more information, please visit the product page. ?????????????????? cui .com date 09/12/2018 page 5 of 10 cui inc series : v78e-500-smt description: non-isolated dc switching regulator 4.75 8 12 16 20 24 28 31 34 36 95 90 efficiency (% ) 85 80 input v oltage (vdc) 100 75 70 65 60 55 50 5 10 20 30 40 50 60 70 80 90 100 90 80 70 60 50 efficiency (% ) output current (% ) 100 40 30 0 10 20 V78E03-500-SMT efciency curve efciency vs. input voltage (at full load) V78E03-500-SMT efciency curve efciency vs. load current (at vin nominal) efficiency curves ( continued ) 6.5 10 13 16 20 24 27 30 33 36 95 90 efficiency (% ) 85 80 input v oltage (vdc) 100 75 70 65 60 55 50 5 10 20 30 40 50 60 70 80 90 90 80 efficiency (% ) 70 60 100 50 40 30 20 10 0 output current (% ) v78e05-500-smt efciency curve efciency vs. input voltage (at full load) v78e05-500-smt efciency curve efciency vs. load current (at vin nominal) 8 11 14 17 20 24 27 30 33 36 95 90 efficiency (% ) 85 80 input v oltage (vdc) 100 75 70 65 60 55 50 5 10 20 30 40 50 60 70 80 90 100 90 80 70 60 50 efficiency (% ) output current (% ) 100 40 30 0 10 20 v78e06-500-smt efciency curve efciency vs. input voltage (at full load) v78e06-500-smt efciency curve efciency vs. load current (at vin nominal)
for more information, please visit the product page. ?????????????????? cui .com date 09/12/2018 page 6 of 10 cui inc series : v78e-500-smt description: non-isolated dc switching regulator 12 15 18 21 24 27 30 33 36 95 90 efficiency (% ) 85 80 input v oltage (vdc) 100 75 70 65 60 55 50 5 10 20 30 40 50 60 70 80 90 100 90 80 70 60 50 efficiency (% ) output current (% ) 100 40 30 0 10 20 v78e09-500-smt efciency curve efciency vs. input voltage (at full load) v78e09-500-smt efciency curve efciency vs. load current (at vin nominal) efficiency curves ( continued ) 15 18 20 22 24 27 30 33 36 95 90 efficiency (% ) 85 80 input v oltage (vdc) 100 75 70 65 60 55 50 5 10 20 30 40 50 60 70 80 90 100 90 80 70 60 50 efficiency (% ) output current (% ) 100 40 30 0 10 20 v78e12-500-smt efciency curve efciency vs. input voltage (at full load) v78e12-500-smt efciency curve efciency vs. load current (at vin nominal) 19 21 23 25 27 29 31 33 35 36 95 90 efficiency (% ) 85 80 input v oltage (vdc) 100 75 70 65 60 55 50 5 10 20 30 40 50 60 70 80 90 90 80 70 60 50 efficiency (% ) output current (% ) 100 40 30 0 10 20 v78e15-500-smt efciency curve efciency vs. input voltage (at full load) v78e15-500-smt efciency curve efciency vs. load current (at vin nominal)
for more information, please visit the product page. ?????????????????? cui .com date 09/12/2018 page 7 of 10 cui inc series : v78e-500-smt description: non-isolated dc switching regulator table 1 model number c1 (ceramic capacitor) c2 (ceramic capacitor) ra1/ra2 (vadj resistance) v78e01-500-smt 10 f/50 v 22 f/10 v refer to vadj resistance calculation v78e02-500-smt 10 f/50 v 22 f/10 v V78E03-500-SMT 10 f/50 v 22 f/10 v v78e05-500-smt 10 f/50 v 22 f/16 v v78e06-500-smt 10 f/50 v 22 f/16 v v78e09-500-smt 10 f/50 v 22 f/25 v v78e12-500-smt 10 f/50 v 22 f/25 v v78e15-500-smt 10 f/50 v 22 f/25 v typical application circuit application circuit figure 1 emc recommended circuit table 2 figure 3 recommended external circuit components fuse choose according to actual input current mov s20k30 ldm1 82 h c0 680 f/50 v c1, c2 refer to table 1 c5 4.7 f/50 v ldm2 12 h note: 8. c1 & c2 are required and should be connected as close to the module pins as possible. 9. c1 & c2 can be increased as needed and the use of tantalum or low esr electrolytic capacitors would be recommended. 10. to reduce the output ripple further, it is recommended to add an lc flter at the output (see fgure 2) with a 10~47 h l component. lc filter application circuit figure 2
for more information, please visit the product page. ?????????????????? cui .com date 09/12/2018 page 8 of 10 cui inc series : v78e-500-smt description: non-isolated dc switching regulator 1. output voltage trimming leave open if not used. application circuit for trim pin formula for trim resistor (part in broken line is the interior of models) note: value for r1, r2, r3, and vref refer to table 3 ra1/ra2: trim resistor a: user-defned parameter, no actual meanings vo': the trim up/down voltage application notes figure 4 table 3 vout (vdc) r1 (k?) r2 (k?) r3 (k?) vref (v) 1.5 11 7.5 7.5 15 0.75 2.5 27 11.858 51 0.765 3.3 33 9.9 47 0.765 5 75 13.5 75 0.765 6.5 75 10 51 0.765 9 51 4.7 27 0.765 12 75 5.1 27 0.765 15 82 4.423 27 0.765 note: 11. the 1.5 vdc output model can only be adjusted up. 0v r 2 r 1 r 3 v re f r a2 va dj vo ? 0v r 2 r 1 r 3 vr ef r a1 va dj vo ? va dj up va dj do wn up : a= vr ef vo ?- vr ef r 1 r= a2 ar 2 r- a 2 -r 3 dow n: a= vr ef vo ?- vr ef r 2 r= a1 ar 1 r- a 1 -r 3
for more information, please visit the product page. ?????????????????? cui .com date 09/12/2018 page 9 of 10 cui inc series : v78e-500-smt description: non-isolated dc switching regulator packaging units: mm reel size: ?330 mm reel qty: 300 pcs per tray carton box size: 400 x 365 x 255 mm carton box qty: 1,800 pcs per carton box
for more information, please visit the product page. ????????? date 09/12/2018 page 10 of 10 cui inc series : v78e-500-smt description: non-isolated dc switching regulator cui ofers 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 be 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 afect its safet y or efectiveness. 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 09/12/2018 the revision history provided is for informational purposes only and is believed to be accurate. revision history
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