For more information, please visit the product page. ddaattee 1111//0088//22001122 ppaaggee 11 ooff 66 SERIES: V78-500 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR FEATURES • 0.5 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 output output output ripple effi ciency voltage voltage current power and noise1 typ 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 76 66 V78X2-500 12 4.75~28 1.8 500 0.9 35 79 67 V7802-500 12 4.75~28 2.5 500 1.25 35 85 73 V7803-500 24 4.75~28 3.3 500 1.65 35 90 80 V7805-500 24 6.5~32 5.0 500 2.5 35 93 84 V78X6-500 24 8~32 6.5 500 3.25 35 94 87 V7809-500 24 11~32 9.0 500 4.5 35 95 91 V7812-500 24 15~32 12 500 6 35 95 92 V7815-500 24 18~32 15 500 7.5 35 96 93 Notes: 1. ripple and noise are measured at 20 MHz BW PART NUMBER KEY V78 XX - 500 Base Number Output Voltage Output Current c u i . c o m

For more information, please visit the product page. CUI Inc │ SERIES: V78-500 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 11/08/2012 │ page 2 of 6 INPUT parameter conditions/description min typ max units 1.5 V output 4.75 12 26 Vdc 1.8 V output 4.75 12 28 Vdc 2.5 V output 4.75 12 28 Vdc 3.3 V output 4.75 24 28 Vdc operating input voltage 5 V output 6.5 24 32 Vdc 6 V output 8 24 32 Vdc 9 V output 11 24 32 Vdc 12 V output 15 24 32 Vdc 15 V output 18 24 32 Vdc OUTPUT parameter conditions/description min typ max units Vin = min ~ max, 1.5~2.5 V models ±0.5 ±1.0 % line regulation at full load 3.3~15 V models ±0.2 ±0.4 % measured from 1.5~2.5 V models ±0.4 ±0.75 % load regulation 10% load to full load 3.3~15 V models ±0.4 ±0.6 % voltage accuracy 100% load ±2 ±3 % switching frequency 100% load, input voltage range 280 330 450 kHz temperature coeffi cient ±0.02 %/°C PROTECTIONS parameter conditions/description min typ max units short circuit protection continuous, automatic recovery thermal shutdown internal IC junction 150 °C SAFETY AND COMPLIANCE parameter conditions/description min typ max units MTBF 2,000,000 hours RoHS compliant yes ENVIRONMENTAL parameter conditions/description min typ max units operating temperature -40 85 °C storage temperature -55 125 °C case temperature 100 °C storage humidity non-condensing 95 % temperature rise at full load 25 °C lead temperature 1.5 mm from case for 10 seconds 300 °C c u i . c o m

For more information, please visit the product page. CUI Inc │ SERIES: V78-500 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 11/08/2012 │ page 3 of 6 DERATING CURVES 1. output power vs. ambient temperature 100 80 %) d ( 60 a o L 40 20 -40 -20 0 20 40 60 71 85 100 120 Ambient Temperature (°C) MECHANICAL parameter conditions/description min typ max units dimensions 0.689 x 0.354 x 0.453 (11.50 x 9.00 x 17.50 mm) inch case material plastic (UL94-V0) weight 2.0 g MECHANICAL DRAWING units: mm [inches] tolerance: ±0.25 [±0.010] pin section tolerance: ±0.10 mm [±0.004] (cid:64) (cid:24) (cid:28) (cid:64) (cid:21) (cid:19) (cid:17) (cid:20)(cid:20)(cid:17)(cid:25)(cid:19) (cid:64) (cid:17)(cid:19)(cid:21) (cid:19)(cid:3)(cid:62)(cid:19) (cid:62)(cid:19)(cid:17)(cid:23)(cid:24)(cid:26)(cid:64) (cid:19)(cid:26)(cid:20) (cid:19)(cid:17)(cid:24)(cid:19)(cid:3)(cid:62)(cid:19) (cid:11)Front(cid:3)View(cid:12) (cid:20)(cid:19)(cid:17)(cid:21)(cid:19)(cid:62)(cid:19)(cid:17)(cid:23)(cid:19)(cid:21)(cid:64) (cid:11)SideV(cid:3)iew(cid:12) (cid:26)(cid:17)(cid:24) (cid:20)(cid:17)(cid:27)(cid:19)(cid:3)(cid:62)(cid:19)(cid:17) (cid:20) (cid:21) (cid:22) (cid:20)(cid:64) (cid:19)(cid:17)(cid:24)(cid:19)(cid:62)(cid:19)(cid:17)(cid:19)(cid:21)(cid:19)(cid:64) (cid:24)(cid:17)(cid:19)(cid:27)(cid:62)(cid:19)(cid:17)(cid:21)(cid:19)(cid:19)(cid:64) (cid:6) (cid:20)(cid:17)(cid:19)(cid:19)(cid:62)(cid:19)(cid:17)(cid:19)(cid:22)(cid:28)(cid:64) (cid:25) (cid:20) (cid:24)(cid:17)(cid:19)(cid:27)(cid:62)(cid:19)(cid:17)(cid:21)(cid:19)(cid:19)(cid:64) (cid:17) (cid:62)(cid:19) (cid:19)(cid:3) (cid:20) (cid:17) (cid:23) (cid:64) (cid:64) (cid:24) (cid:20) (cid:28) (cid:26) (cid:21) (cid:19) (cid:17) (cid:17) (cid:19)(cid:3)(cid:62)(cid:19) (cid:19)(cid:3)(cid:62)(cid:19) PIN CONNECTIONS (cid:24) (cid:27) (cid:17) (cid:17) (cid:26) (cid:20) PIN FUNCTION 1 +Vin (cid:20) (cid:21) (cid:22) (cid:21)(cid:64) 2 GND (cid:11)BottomView(cid:12) (cid:20) (cid:19) (cid:17) 3 +Vo (cid:19) (cid:20)(cid:20)(cid:17)(cid:25)(cid:19) (cid:19)(cid:3)(cid:62) (cid:62)(cid:19)(cid:17)(cid:23)(cid:24)(cid:26)(cid:64) (cid:17)(cid:22) (cid:19) c u i . c o m

For more information, please visit the product page. CUI Inc │ SERIES: V78-500 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 11/08/2012 │ page 4 of 6 TYPICAL APPLICATION CIRCUIT 1. C1 and C2 are required and should be fi tted close to the converter pins 2. For the capatance of C1 and C2, see the external capacitor table. Low ESR types should be chosen 3. C3: a low ESR capacitor is required to keep the noise at the converter to a minimum. Ceramic capacitors are preffered, but tantalum of low ESR electrolytic capacitors may also suffi ce; General use 10μF/50V ceramic capacitor. C4 Optional, General use 100μF/25V electrolytic capacitor. 4. No parallel connection or plug and play TEST CIRCUIT Current Electronic Current Meter Load Meter + +Vin +Vout DC/DC DC Power Voltage Cin 30cm, 18AWGA Voltage Source Meter Converter Cout Twisted B Meter Osc2i0llMosHczope - GND 0V A + A A C01 + C02 B 1. Cin = 10μF / 50V for 500mA and 22μF / 50V for 1A, Cout = 100μF / 16V. 2. C01 = 10μF / 50V Electrolytic, C02 = 0.1μF / 50V Ceramic. B B 3. All points labeled A refer to one junction. - 4. All points labeled B refer to one junction. 5. Use a short ground loop for probing. Do not use a wired ground clip. c u i . c o m

For more information, please visit the product page. CUI Inc │ SERIES: V78-500 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 11/08/2012 │ page 5 of 6 EFFICIENCY AND RIPPLE Output Efficiency Ripple 50 100 95 40 90 Efficiency (%) 77880505 VVVVV77777888880000135926-----555550000000000 Ripple (mVpp)2300 VVVVV77777888880000135926-----555550000000000 65 V7815-500 V7815-500 60 10 55 50 Vin(V) 0 Vin(V) 10 20 30 32 10 20 30 32 Efficiency vs. Vin (Full Load) Ripple vs. Vin ( Full Load) 100 50 95 40 90 V7803-500 V7803-500 cy (%)85 VV77880056--550000 mVpp)30 VV77880056--550000 Efficien7850 VV77880192--550000 Ripple (20 VV77880192--550000 V7815-500 V7815-500 70 10 65 60 0 100 200 300 400 500 600 100 200 300 400 500 600 Output Current(mA) Output Current (mA) Efficiency vs. Load (Vin=Vin_min) Ripple vs. Load (Vin=Vin_min) 100 50 90 40 80 V7803-500 V7803-500 V7805-500 V7805-500 %) 70 V7806-500 pp)30 V7806-500 Efficiency ( 5600 VVV777888011925---555000000 Ripple (mV20 VVV777888011925---555000000 40 10 30 20 0 100 200 300 400 500 600 100 200 300 400 500 600 Output Current (mA) Output Current (mA) Efficiency vs. Load (Vin=Vin_max) Ripple vs. Load (Vin=24V) c u i . c o m

For more information, please visit the product page. CUI Inc │ SERIES: V78-500 │ DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR date 11/08/2012 │ page 6 of 6 EXTERNAL CAPACITOR TABLE Part C1,C3 C2,C4 Number (Ceramic Capacitor) (Ceramic Capacitor) V7801-500 10 μF/50V 22 μF/6.3V V78X2-500 10 μF/50V 22 μF/6.3V V7802-500 10 μF/50V 22 μF/6.3V V7803-500 10 μF/50V 22 μF/6.3V V7805-500 10 μF/50V 22 μF/10V V78X6-500 10 μF/50V 10 μF/10V V7809-500 10 μF/50V 10 μF/16V V7812-500 10 μF/50V 10 μF/25V V7815-500 10 μF/50V 10 μF/25V REVISION HISTORY rev. description date 1.0 initial release 07/13/2010 1.01 new template applied 04/18/2012 1.02 V-Infi nity branding removed 09/04/2012 1.03 updated typical application circuits 09/25/2012 1.04 updated external capacitor values 11/08/2012 The revision history provided is for informational purposes only and is believed to be accurate. Headquarters 20050 SW 112th Ave. Fax 503.612.2383 Tualatin, OR 97062 cui.com 800.275.4899 techsupport@cui.com 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.