V7815-500

Additional Resources: ~~_~~ Product Page    |    3D Model **date** 04/09/2024 cS **page** 1 of 7 PY CUIINC a bel group **SERIES:** V78-500 **DESCRIPTION:** NON-ISOLATED SWITCHING REGULATOR **FEATURES** • 0.5 A current output • high efficiency up to 96% • no heat sink required • pin compatible to LM78XX linear regulators • available in straight and right angle SIP packages • low ripple and noise • short circuit protection, thermal shutdown • wide temperature (-40~85°C) | RoHS . **MODEL input output output output ripple voltage voltage current power and noise[1] range max max max Vin min Vin max** (Vdc) (Vdc) (Vdc) (mA) (W) (mVp-p) (%) (%) V7801-500 12 4.75~26 1.5 500 0.75 35 66 76 V78X2-500* 12 4.75~28 1.8 500 0.9 35 67 79 V7802-500 12 4.75~28 2.5 500 1.25 35 73 85 V7803-500* 24 4.75~28 3.3 500 1.65 35 80 90 V7805-500* 24 6.5~32 5.0 500 2.5 35 84 93 V7806-500* 24 8~32 6.5 500 3.25 35 87 94 V7809-500* 24 11~32 9.0 500 4.5 35 91 95 V7812-500* 24 15~32 12 500 6 35 92 95 V7815-500* 24 18~32 15 500 7.5 35 93 96 Notes: 1. ripple and noise are measured at 20 MHz BW *. Discontinued model **PART NUMBER KEY V78 XX - 500** Base Number Output Voltage Output Current **cui** .com 

||**cui**.com<br>**CUI Inc� SERIES:**V78-500**�** **DESCRIPTION:**NON-ISOLATED SWITCHING REGULATOR<br>**date**04/09/2024**�** **page**2 of 7<br>**INPUT**<br>**parameter**<br>**conditions/description**<br>**min**<br>**���**<br>**max**<br>**units**<br>operating input voltage<br>1.5 V output<br>1.8 V output<br>2.5 V output<br>3.3 V output<br>5 V output<br>6 V output<br>9 V output<br>12 V output<br>15 V output<br>4.75<br>4.75<br>4.75<br>4.75<br>6.5<br>8<br>11<br>15<br>18<br>12<br>12<br>12<br>24<br>24<br>24<br>24<br>24<br>24<br>26<br>28<br>28<br>28<br>32<br>32<br>32<br>32<br>32<br>Vdc<br>Vdc<br>Vdc<br>Vdc<br>Vdc<br>Vdc<br>Vdc<br>Vdc<br>Vdc<br>**OUTPUT**<br>**parameter**<br>**conditions/description**<br>**min**<br>**���**<br>**max**<br>**units**<br>line regulation<br>Vin = min ~ max,<br>at full load<br>1.5~2.5 V models<br>3.3~15 V models<br>±0.5<br>±0.2<br>±1.0<br>±0.4<br>%<br>%<br>load regulation<br>measured from<br>10% load to full load<br>1.5~2.5 V models<br>3.3~15 V models<br>±0.4<br>±0.4<br>±0.75<br>±0.6<br>%<br>%<br>voltage accuracy<br>100% load<br>±2<br>±3<br>%<br>switching frequency<br>100% load, input voltage range<br>280<br>330<br>450<br>kHz<br>��������������������<br>±0.02<br>%/°C<br>**PROTECTIONS**<br>**parameter**<br>**conditions/description**<br>**min**<br>**���**<br>**max**<br>**units**<br>short circuit protection<br>continuous, automatic recovery<br>thermal shutdown<br>internal IC junction<br>150<br>°C<br>**SAFETY AND COMPLIANCE**<br>**parameter**<br>**conditions/description**<br>**min**<br>**���**<br>**max**<br>**units**<br>MTBF<br>2,000,000<br>hours<br>RoHS compliant<br>yes<br>**ENVIRONMENTAL**<br>**parameter**<br>**conditions/description**<br>**min**<br>**���**<br>**max**<br>**units**<br>operating temperature<br>-40<br>85<br>°C<br>storage temperature<br>-55<br>125<br>°C<br>case temperature<br>100<br>°C<br>storage humidity<br>non-condensing<br>95<br>%<br>temperature rise<br>at full load<br>25<br>°C<br>lead temperature<br>1.5 mm from case for 10 seconds<br>300<br>°C<br>DISCONTINUED<br>Additional Resources:Product Page<br>|3D Model|
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Additional Resources:    Product Page    |    3D Model<br>CUI Inc  SERIES:  | V78-500   | DESCRIPTION:  NON-ISOLATED SWITCHING REGULATOR date  04/09/2024   | page  3 of 7<br>DERATING CURVES<br>TEMPERATURE DERATING CURVE<br>120<br>_ 100<br>=<br>5 80<br>= 70<br>5<br>& 40<br>Ss<br>°<br>20<br>;0ECE<br>40 -20 0 20 40 6071 85 100 120<br>Operating Temperature (C°)<br>MECHANICAL<br>parameter conditions/description min max units<br>dimensions 0.457 x 0.297 x 0.400 (11.6 x 7.55 x 10.16 mm) inch<br>case material plastic (UL94-V0)<br>weight 2.0 g<br>MECHANICAL DRAWING<br>units: mm [inches]<br>tolerance: ±0.25 [±0.010]<br>pin section tolerance: ±0.10 mm [±0.004]<br>i<br>S S Ss es ea ee<br>8).<br>SFront View 3 | |<br>re = } 1 2 3 |<br>f 21.00 [0.039]<br>: Grid 2.54*2.54mm<br>™ L_ == 0.50 [0.020] Note<br>- = — 5.08 [0.200]<br>1.80 [0.071] 0.30 [0.012]<br>|<br>3 a PIN CONNECTIONS<br>PIN FUNCTION<br>wo °<br>ur)™ Bottom View 1 +Vin<br>2 GND<br>i<br>3 +Vo<br>—— 11.60 [0.457] —+<br>cui .com<br>UED<br>DISCONTI<br>**----- End of picture text -----**<br>


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**date** 04/09/2024 **page** 4 of 7 

**CUI Inc  SERIES:** V78-500 **DESCRIPTION:** NON-ISOLATED SWITCHING REGULATOR 

## **TYPICAL APPLICATION CIRCUIT** 

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+Vout<br>|3 O<br>=<br>c4 GNDOo<br>4) c2<br>- Vout<br>ED<br>**----- End of picture text -----**<br>


2. For the capatance of C1 and C2, see the external capacitor table. Low ESR types should be chosen 

## electrolytic capacitor. 

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4. No parallel connection or plug and play<br>TEST CIRCUIT<br>Current Electronic<br>Current Meter Load<br>Meter OO —, —,<br>+ O t=O) +Vin +Vout [Cs<br>DC PowerSource VoltageMeter Cin ConverterDC/DC Cout 30cm, 18AWGTwisted AB VoltageMeter Oscilloscope20MHz<br>- O -® GND 0V (Ca<br>A + A A<br>a<br>C01 + C02 B<br>Lif<br>1. Cin = 10 µ F / 50V for 500mA and 22 µ F / 50V for 1A, Cout = 100 µ F / 16V.<br>2. C01 = 10 µ F / 50V Electrolytic, C02 = 0.1 µ F / 50V Ceramic. B B<br>3. All points labeled A refer to one junction. -<br>4. All points labeled B refer to one junction.<br>5. Use a short ground loop for probing.  Do not use a wired ground clip.<br>DISCONT<br>**----- End of picture text -----**<br>


**cui** .com 

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Additional Resources:    Product Page    |    3D Model<br>CUI Inc  SERIES:  V78-500   DESCRIPTION:  NON-ISOLATED SWITCHING REGULATOR date  04/09/2024   page  5 of 7<br>EFFICIENCY AND RIPPLE<br>Output<br>Efficiency<br>Ripple<br>50<br>100 toot ee ee e i. to root rotrot If ii ii 4 iI 11 toottoot 11 \\ rootiol<br>9590 =4-4/--badsa mounita T \ 1 _1->elLa=SS——__= 40 Ditniwieeinenedina|ssrotPort1 \ II btbt1 1 9I II 11|) 1.tooti  ~~tt1 tT1I 7 7I7\i > Tbooti  747'  T<br>8580 -4-4--+—-3=rr toottootit1 a 1 nsHoroCn! 11 eeot1I mt0!i 7ii - -I-!'I - 11+ -4--I-ne!)1i 'I -+!1 -4-5Frootee!1 d'I — eed — V7806-500V7805-500V7803-500 30 SSrot1rootI' \1i eefII11 i)1i11 i1iI' a9f9Ii SalIII1' a 1111' letoot\toot1| f1' 111I'i \\\1' boot\Itid 1' —— V7803-500V7805-500V7806-500<br>75 -4+--1- - b= 4-715 - b= 4-716 - + - 4-71 - =a - Io | dD gf 9 f 1 toot 1<br>70 -ijJj--L_j_JU_io Porro 1S4 1 0) 0Gee ee iol V7809-500 20 So ootee en I ns eei tfes ee I 1 toot _ V7809-500<br>65 enit edPororotne ee |4 (700( 0) 00Geee otio _—_ V7812-500 rot14 iI ibtof 99 II 1 —eee V7812-500<br>60 =itaminiteniat 42itei= Porton= = Se ais= =4 -i--t-t--I--t-a--rnL0) 000itf tf t + ee roott 4 — V7815-500 10 i1rotor\ | ae1 1 i_>—,i = waltoot= eS1 \atoot = V7815-500<br>55 SFtootSS > Horotor1 Sy teot edi 0) 3a root rotrot flI i)i ii 49 fI 11 roottoot 11 \\ roottoot<br>50 io Porro 4 ( 0) 0G root Vin(V) 0 1 I 1 I \ 1 I Vin(V)<br>10 20 30 32 10 20 30 32<br>Efficiency vs. Vin (Full Load) Ripple vs. Vin ( Full Load)<br>100 111II\I\\f1 50<br>'l —= ! I 1 1 1 1 1 1 1 1 1 1<br>95<br>EEy IMe1 ' 1 1 i 1 i i i i<br>90 a7fy!1 '1' T''1 '!I '!| a'!I !\ !' !\ al '\ '1 — V7803-500 40 IHli11 IIfi iIfj IIIi IIIf IIIf III| IIIf I\I\ I'I| \\\\ —_— V7803-500<br>85 Se 11' een 11' cn 11' ee If'eel II' el \\' ee Ge\\! \\!eee \\! ee I\' eee !1' eee 0 ee— V7806-500V7805-500 30 - je111 = aefiI Se iefflI afiI |jiI |j| |j| \jI fl\\ Hl\| Hl\\ —— V7805-500V7806-500<br>80 a '' ee '! ee I'eee'1 'i '| tttHl' 'i '' tt'i '! — V7809-500 IlInl 111 |11 |11 |11 \11 1i1 I!Hl1 Hl'i '11 Hl'i — V7809-500<br>75 —-R--F--bF-------1 ' 1 ' 1 ' I ' I ' -bI ' - -I-I ' - -1-\ ' - -1-\ ' - 1I ' - -1-1 ' - -] V7812-500 20 ee1 j j | | | +--+| | ---\  --|---1--\ \ — V7812-500<br>70 == iP ' ' = =i'' = iP'' = Si'' Slip'' ay ay le'' ei '' eet 'uleet 'o ii '' etter '' eieai — V7815-500 II 11 11 11 11 11 11 11 11 11 Hl1\ — V7815-500<br>'1 '1 '1 'I 'I '\ 'I '\ '\ !I '1 10 eine nient— la | tf Ui T —<br>65 ~ LL 'H _L H _ LL I _ f ee '\\\ ee \1 ee ————__ = —<br>60 '1'1'i'I'f''!I!\!\!f'1 0 I 1 1 1 1 1 1 1 1 1 1<br>100 200 300 400 500 600 100 200 300 400 500 600<br>Output Current(mA) Output Current (mA)<br>Efficiency vs. Load (Vin=Vin_min) Ripple vs. Load (Vin=Vin_min)<br>100 50<br>1 1 1 I I I \ \ \ 1 1 I I 1 I I I I I 1 I I<br>1 1 1 I I 1 I I I I I 1 ' '<br>90 --L_--}'6 TIL H 1 1 1 1 1 | i ' ' I<br>1TT Ee \ \ 1 | \ \ I I 1 f |<br>80 = 1 p = Saalf—_—_—_—_—_——I\\\\11— V7803-500 40 ZIPs1 1 ' 1 1 siesH |)H |H  '' 1' 11 — V7803-500<br>I I I I \ \ 1 1 — V7805-500 I I 1 i I I I I 1 I I — V7805-500<br>70 aw f 1i ' i | ISl ' !i | !el ! 'nf ' ' ! ' | ! ! ! V7806-500 30 eee1 1 I 1 1 ' i tti I tt' 1 — V7806-500<br>60 A 1 !iL 1 tL 'H1 _ tL 'II tL 'II 'II !\I '\\ '\\ !11 !11 _——_— V7812-500V7809-500 i1| i1| I'1 11I 11I Hl'I Hli|I Hli|I II1i !1'I 11'I —_ V7809-500V7812-500<br>50 ==b=-\ 11 1 == 1 == I = 5b f 2 I ee \ \ \ 1 ee 1 eee V7815-500 20 __L__L_| | lLf Sef \ f | | 1 ee fl ee fl — V7815-500<br>I 1 1 I I I I \ \ 1 1 e e = | I i f I<br>40 SIR 1 SI '1 SS I1 li 1I a a IlI se Hl'  len i\ H\ Hl\ eels 11 Retentie '1 etied i1 i| I' 1' !' 1| |' a I 1 f i —<br>30 eeennenimesines 11 1 11 1 jl 11 If I ff I II I I\ I \\ \| tt \\ \ 11 1 1 11 1 10 =-b-54-34-|I I T1 243|I—II II ee III iII 111 SIIf r |II<br>11iI|''''!'<br>' ' | ' ' ' ' ' ' ' ' i | ! i | i | | ! | i<br>20 0<br>100 200 300 400 500 600 100 200 300 400 500 600<br>Output Current (mA)<br>Output Current (mA)<br>Efficiency vs. Load (Vin=Vin_max) Ripple vs. Load (Vin=24V)<br>DISCONTINUED<br>Efficiency (%) Ripple (mVpp)<br>Efficiency (%) Ripple (mVpp)<br>Efficiency (%) Ripple (mVpp)<br>**----- End of picture text -----**<br>


**cui** .com 

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**CUI Inc � SERIES:** V78-500 **� DESCRIPTION:** NON-ISOLATED SWITCHING REGULATOR 

**date** 04/09/2024 **� page** 6 of 7 

## **EXTERNAL CAPACITOR TABLE** 

||**cui**.com<br>**EXTERNAL CAPACITOR TABLE**<br>Part<br>C1,C3<br>C2,C4<br>Number<br>(Ceramic Capacitor)<br>(Ceramic Capacitor)<br>V7801-500<br>10µF/50V<br>22µF/6.3V<br>V78X2-500<br>10µF/50V<br>22µF/6.3V<br>V7802-500<br>10µF/50V<br>22µF/6.3V<br>V7803-500<br>10µF/50V<br>22µF/6.3V<br>V7805-500<br>10µF/50V<br>22µF/10V<br>V78X6-500<br>10µF/50V<br>10µF/10V<br>V7809-500<br>10µF/50V<br>10µF/16V<br>V7812-500<br>10µF/50V<br>10µF/25V<br>V7815-500<br>10µF/50V<br>10µF/25V<br>DISCONTINUED|
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**date** 04/09/2024 **page** 7 of 7 

**CUI Inc  SERIES:** V78-500 **DESCRIPTION:** NON-ISOLATED SWITCHING REGULATOR 

## **REVISION HISTORY** 

|**REVISION HISTORY**|**REVISION HISTORY**|
|---|---|
|**rev.**<br>**description**<br>**date**<br>1.0<br>initial release<br>07/13/2010<br>1.01<br>new template applied<br>04/18/2012<br>1.02<br>09/04/2012<br>1.03<br>updated typical application circuits<br>09/25/2012<br>1.04<br>updated external capacitor values<br>11/08/2012<br>1.05<br>discontinuedV78X2-500model<br>06/24/2019<br>1.06<br>companylogo updated<br>04/14/2021<br>1.07<br>discontinued model V7809-500<br>12/14/2022<br>1.08<br>discontinued model V7806-500<br>02/07/2023<br>1.09<br>07/21/2023<br>1.10<br>discontinued modelsV7803-500 & V7815-500<br>10/04/2023<br>**REVISION HISTORY**<br>UED||
|**Headquarters**<br>20050 SW 112th Ave.<br>Tualatin, OR 97062<br>**800.275.4899**<br>Fax 503.612.2383<br>**cui**.com<br>techsupport@cui.com<br>1.11<br>discontinued modelsV7801-500, V7802-500, V7805-500 & V7812-500<br>04/09/2024<br>The revision history provided is for informational purposes only and is believed to be accurate.<br>DISCONT<br>FYCUIINC<br>a bel group||
|CUI offers a two (2) year limited warranty.<br>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