date 04/22/2013 page 1 of 7 SERIES: V78-1000 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR FEATURES • • • • • • • • 1 A current output extremely high efficiency up to 97% 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 voltage output voltage output current ripple and noise1 efficiency typ (Vdc) range (Vdc) (Vdc) max (mA) max (mVp-p) Vin min (%) Vin max (%) V7803-1000 24 4.75~28 3.3 1,000 35 90 83 V7805-1000 24 6.5~32 5 1,000 35 93 88 V7806-1000 24 9~32 6.5 1,000 35 94 90 V7809-1000 24 12~32 9 1,000 35 95 92 V7812-1000 24 16~32 12 1,000 35 96 94 V7815-1000 24 20~32 15 1,000 35 97 94 Notes: 1. ripple and noise are measured at 20 MHz BW PART NUMBER KEY V78 XX - 1000 X Base Number Output Voltage Output Current cui.com "blank" = straight pins R = 90° pins CUI Inc │ SERIES: V78-1000 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 04/22/2013 │ page 2 of 7 INPUT parameter conditions/description min typ max units operating input voltage 3.3 V model 5 V model 6.5 V model 9 V model 12 V model 15 V model 4.75 6.5 9.0 12 16 20 24 24 24 24 24 24 28 32 32 32 32 32 Vdc Vdc Vdc Vdc Vdc Vdc parameter conditions/description min typ max units line regulation Vin = min ~ max, at full load ±0.2 ±0.4 % load regulation measured from 10% load to full load ±0.4 ±0.6 % voltage accuracy 100% load ±2 ±3 % switching frequency 100% load, input voltage range 330 450 OUTPUT 280 temperature coefficient ±0.02 load capatance kHz %/°C 1,000 μF max units PROTECTIONS parameter conditions/description min short circuit protection continuous, automatic recovery thermal shutdown typ 150 °C SAFETY AND COMPLIANCE parameter conditions/description min MTBF RoHS compliant typ max 2,000,000 units hours yes ENVIRONMENTAL parameter conditions/description min typ max units operating temperature -40 85 °C storage temperature -55 125 °C 100 °C 95 % case temperature storage humidity non-condensing temperature rise at full load lead temperature 1.5 mm from case for 10 seconds 25 cui.com °C 300 °C CUI Inc │ SERIES: V78-1000 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 04/22/2013 │ page 3 of 7 DERATING CURVES 1. output power vs. ambient temperature Load (%) 100 80 60 40 20 -40 -20 0 20 40 60 71 85 100 120 Ambient Temperature (°C) MECHANICAL parameter conditions/description dimensions 11.50 x 9.00 x 17.50 (0.689 x 0.354 x 0.453 inch) min case material plastic (UL94-V0) typ max units mm weight 3.7 g MECHANICAL DRAWING units: mm [inches] tolerance: ±0.25 [0.010] pin section tolerance: ±0.10 [0.004] V78XX-1000 V78XX-1000R 11.50[0.453] 17.50 [0.689] 0.50 [0.020] 17.50 [0.689] 1.50 [0.059] 4.10 [0.161] (Bottom View) 1.00 [0.039] 2 3 0.30 [0.012] 0.50 [0.020] 1 2 3 1 2.54 [0.100] 1 2.15 [0.085] (Bottom View) 2.15 [0.085] 4.10[0.161] 2.15 [0.085] 5.08 [0.200] 5.08 [0.200] 5.08 [0.200] 9.00 [0.354] 2 5.08 [0.200] 9.00 [0.354] 0.50 [0.020] 11.50[0.453] 3 2.54 [0.100] 1.00 [0.039] PIN CONNECTIONS PIN FUNCTION 1 +Vin 2 GND 3 +Vo cui.com 1.35 [0.053] CUI Inc │ SERIES: V78-1000 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 04/22/2013 │ page 4 of 7 EXTERNAL CAPACITOR TABLE Part Number C1,C3 (Ceramic capacitor) C2,C4 (Ceramic capacitor) V7803-1000(R) 10μF/50V 22μF/6.3V V7805-1000(R) 10μF/50V 22μF/10V V7806-1000(R) 10μF/50V 10μF/10V V7809-1000(R) 10μF/50V 10μF/16V V7812-1000(R) 10μF/50V 10μF/25V V7815-1000(R) 10μF/50V 10μF/25V TYPICAL APPLICATION CIRCUIT 1 Vin V78XX-1000(R) 3 1 +Vin +Vout C3 2 C1 APPLICATION EXAMPLE V78XX-1000(R) C4 2 GN D C1 1 GND V78XX-1000(R) 2 1 V78XX-1000(R) -Vout 1. C1 and C2 are required and should be fitted close to the converter pins. 3 2 2. The capacitance of C1, C2, C3 and C4 sees external capacitor table, it can be increased properly if required, and tantalum or low ESR electrolytic capacitors may also suffice. 3. No parallel connection or plug and play. C2 -Vout OUTPUT RIPPLE REDUCTION 1 C1 DC/DC 3 Converter 2 L +Vout C2 22 F GND To reduce output ripple, it is recommended to add a LC filter in output port. L: Recommended parameter 10 H ~ 47 H. cui.com Load Vin 3 C2 GND C1 +Vin +Vout GN D C2 GND 3 CUI Inc │ SERIES: V78-1000 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 04/22/2013 │ page 5 of 7 EFFICIENCY AND RIPPLE CURVES Efficiency Ripple Ripple (mV) Efficiency(%) 40 100 35 90 80 V7803-1000 30 V7805-1000 25 V7812-1000 V7806-1000 12 16 20 24 28 32 V7809-1000 V7815-1000 10 60 8 V7812-1000 V7806-1000 15 V7815-1000 4.75 V7805-1000 20 V7809-1000 70 V7803-1000 5 Vin(V) 4.75 Efficiency VS Vin(Full Load) 8 12 16 20 24 28 32 Vin (V) Ripple VS Vin ( Full Load) Efficiency(%) Ripple(mV) 20 100 95 15 90 V7803-1000 V7803-1000 85 V7805-1000 80 V7812-1000 V7806-1000 75 V7809-1000 10 V7805-1000 5 V7809-1000 V7812-1000 V7806-1000 V7815-1000 V7815-1000 70 0 65 40 80 200 400 600 800 1000 Load(mA) Efficiency VS Load(Vin=Vin_min) 40 Efficiency(%) 80 200 400 600 800 1000 Load(mA) Ripple VS Load(Vin=Vin_min) Ripple(mV) 35 100 30 90 25 80 V7803-1000 70 V7812-1000 V7806-1000 60 V7809-1000 80 15 V7812-1000 V7806-1000 10 V7809-1000 V7815-1000 5 V7815-1000 40 V7805-1000 20 V7805-1000 50 V7803-1000 0 200 400 600 800 1000 Load(mA) Efficiency VS Load(Vin=Vin_max) 40 80 200 400 600 800 Ripple VS Load(Vin=24V) cui.com 1000 Load(mA) CUI Inc │ SERIES: V78-1000 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 04/22/2013 │ page 6 of 7 TEST CONFIGURATION Efficiency and Output Voltage Ripple Test 25.4mm 25.4mm 12.7mm 2 C1 Copper strip C2 1 F +Vout 10 F Ceramic Tantalum Scope GND Load 3 Load DC/DC Converter 2.54 mm 1 2.54 mm Vin Copper strip Start-up and Load Transient Response Test Vin 1 C1 DC/DC Converter 50.8 mm 3 2 Copper strip Scope C2 GND Copper strip Note: All specifications measured at 25°C, humidity <75%, nominal input voltage, and full load unless otherwise noted. cui.com +Vout CUI Inc │ SERIES: V78-1000 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 04/22/2013 │ page 7 of 7 REVISION HISTORY rev. description date 1.0 initial release 07/13/2010 1.01 V-Infinity branding removed 09/04/2012 1.02 updated typical application circuits 09/25/2012 corrected switching frequency values 04/22/2013 1.03 The revision history provided is for informational purposes only and is believed to be accurate. Headquarters 20050 SW 112th Ave. Tualatin, OR 97062 800.275.4899 Fax 503.612.2383 cui.com [email protected] 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 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 affect its safety or effectiveness.