For more information, please visit the product page. ddaattee 05/25/2014 ppaaggee 11 ooff 55 SERIES: VBT1-SMT │ DESCRIPTION: DC-DC CONVERTER D FEATURES • 1 W isolated output E • industry standard 8 pin SMT package • single unregulated outputs • 1,000 V isolation • short circuit protection U • UL safety approvals (some models) • wide temperature (-40~85°C) • efficiency up to 79% N RoHS MODEL input output output output ripple efficiency voltage voltage curreInt power and noise1 typ range min max max max typ (Vdc) (Vdc) (Vdc) (mA) (mA) (W) (mVp-p) (%) VBT1-S3.3-S3.3-SMT 3.3 3.0~3.63 3.3 T30 303 1 75 73 VBT1-S3.3-S5-SMT 3.3 3.0~3.63 5 20 200 1 75 74 VBT1-S5-S3.3-SMT 5 4.5~5.5 3.3 30 303 1 75 72 VBT1-S5-S5-SMT 5 4.5~5.5 5N 20 200 1 75 77 VBT1-S5-S9-SMT 5 4.5~5.5 9 12 111 1 75 76 VBT1-S5-S12-SMT 5 4.5~5.5 12 9 84 1 75 79 VBT1-S5-S15-SMT 5 4.5~5.5 15 7 67 1 75 78 O VBT1-S5-S24-SMT 5 4.5~5.5 24 4 42 1 75 78 VBT1-S12-S3.3-SMT 12 10.8~13.2 3.3 30 303 1 75 75 VBT1-S12-S5-SMT 12 10.8~13.2 5 20 200 1 75 69 VBT1-S12-S9-SMT 12 10.8~13.2 9 12 111 1 75 73 C VBT1-S12-S12-SMT 12 10.8~13.2 12 9 84 1 75 73 VBT1-S12-S15-SMT 12 10.8~13.2 15 7 67 1 75 74 VBT1-S12-S24-SMT 12 10.8~13.2 24 4 42 1 75 79 VBT1-S15-S5-SMT S 15 13.5~16.5 5 20 200 1 75 74 VBT1-S15-S15-SMT 15 13.5~16.5 15 7 67 1 75 79 VBT1-S24-S3.3-SMT 24 21.6~26.4 3.3 30 300 1 75 69 VBT1-S24-S5-SMT 24 21.6~26.4 5 20 200 1 75 70 I VBT1-S24-S9-SMT 24 21.6~26.4 9 11 110 1 75 72 VBT1-S24-S12-SMT 24 21.6~26.4 12 8 83 1 75 75 D VBT1-S24-S15-SMT 24 21.6~26.4 15 7 67 1 75 76 VBT1-S24-S24-SMT 24 21.6~26.4 24 4 42 1 75 77 Notes: 1. ripple and noise are measured at 20 MHz BW PART NUMBER KEY VBT1 - SXX - SXX -SMT - X Base Number Package Options Input Voltage Output Voltage Packaging Style "blank" = standard TR = Tape & Reel c u i . c o m

For more information, please visit the product page. CUI Inc │ SERIES: VBT1-SMT │ DESCRIPTION: DC-DC CONVERTER date 05/25/2014 │ page 2 of 5 INPUT D parameter conditions/description min typ max units 3.3 V model 3.0 3.3 3.63 Vdc 5 V model 4.5 5 5.5 Vdc operating input voltage 12 V model 10.8 12 13.2 Vdc 15 V model 13.5 15 16.E5 Vdc 24 V model 21.6 24 26.4 Vdc OUTPUT parameter conditions/description min typ U max units for Vin change of 1%, 3.3 V model 1.5 % line regulation for Vin change of 1%, all other models 1.2 % measured from 10% load to full load 3.3 V model N 15 20 % 5 V model 12.8 15 % load regulation 9 V model 8.3 10 % 12 V model 6.8 10 % 15 V model 6.3 10 % 24 V model 6.0 10 % I voltage accuracy see derating curves 100% load, 5 and 12 V input 100 kHz switching frequency 100% load, 24 V input T 500 kHz 100% load, all other models 100 500 kHz temperature coefficient ±0.03 %/°C PROTECTIONS N parameter conditions/description min typ max units short circuit protection 1 s SAFETY AND COMPLIANCE O parameter conditions/description min typ max units isolation voltage for 1 minute at 1 mA max. 1,000 Vdc isolation resistance at 500 Vdc 1,000 MΩ safety approvals1 UL 6C0950-1 (E222736) MTBF 3,500,000 hours RoHS compliant yes Notes: 1. VBT1-S3.3-S9/12/15/24, VBT1-S5-S3.3 and 24, VBT1-S12-S3.3 and S24, VBT1-S15 (all), and VBT1-S24 (all) models UL 60950-1 pending S ENVIRONMENTAL parameter conditions/description min typ max units operating temIperature -40 85 °C storage temperature -55 125 °C storageD humidity non-condensing 95 % temperature rise at full load 25 °C reflow soldering see reflow soldering profile 245 °C c u i . c o m

For more information, please visit the product page. CUI Inc │ SERIES: VBT1-SMT │ DESCRIPTION: DC-DC CONVERTER date 05/25/2014 │ page 3 of 5 SOLDERING D 224550 Peak.Temp245˚(cid:3)C(Max.) 217 200 60SecMax ()C˚ (>217˚(cid:3)C) E e150 ur at per100 m Te U 50 0 Time(sec.) DERATING CURVES N 1. output power vs. ambient temperature 2. output voltage vs. output current +10% 100 %) +5% Load (%) 864000 put Voltate ( NVoomltaingaelI +--272...555%%% ut O 20 T -40 -20 0 20 40 60 85 105 120 10% 50% 100% Ambient Temperature (°C) Output Current (%) MECHANICAL N parameter conditions/description min typ max units dimensions 12.70 x 11.20 x 6.25 (0.500 x 0.441 x 0.246 inch) mm case material plastic (UL94-V0) O weight 1.41 g MECHANICAL DRAWING units: mm [inches] tolerance: ±0.15 [±0.006] C pin section tolerance: ±0.10 mm [±0.004] (Side View) 6.25[0.246] 6.00[0.236] S 0.25[0.010] 0.60[0.024] 12.70[0.500] 8 7 6 5 2.54 [0.100] 2.54[0.100] 10.10[0.398] I 1 2 3 4 2.10[0.083] 8 7 6 5 D 7.50 [0.295] (Top View) 11.20[0.441] 2.54[0.100] 1.00[0.039] 1 2 3 4 PIN CONNECTIONS PIN FUNCTION A 1 GND 0.25[0.010] 8.50[0.335] 2 +Vin 4 0 V A 0.25[0.010] 5 +Vo 3,6,7 NC 1.35[0.053] 5°max 8 NC c u i . c o m

For more information, please visit the product page. CUI Inc │ SERIES: VBT1-SMT │ DESCRIPTION: DC-DC CONVERTER date 05/25/2014 │ page 4 of 5 APPLICATION NOTES D 1. Requirement on Output Load In order to ensure the product operates efficiently and reliably, make sure the specified range of input voltage is not exceeded and the minimum output load is not less than 10% load. If the actual load is less than the specified minimum load, the output ripple may increase sharply while its efficiency and reliability will reduce greatly. If the actual output power is very small, please add an E appropriate resistor as extra loading. 2. Overload Protection Under normal operating conditions, the output circuit of these products has no protection against over-current and short-circuits. The simplest method is to connect a self-recovery fuse in series at the input end or add a circuit breaker to thUe circuit. 3. Filtering In some circuits which are sensitive to noise and ripple, a filtering capacitor may be added to the DC/DC output end and input end to reduce the noise and ripple. However, the capacitance of the output filter capacitor must be proper. If the capacitance is too big, a startup problem might arise. For every channel of output, provided the safe and reliable operation is ensured, the greatest N capacitance of its filter capacitor sees the external capacitor table. To get an extremely low ripple, an “LC” filtering network may be connected to the input and output ends of the DC/DC converter, which may produce a more significant filtering effect. It should also be noted that the inductance and the frequency of the “LC” filtering network should be staggered with the DC/DC frequency to avoid mutual interference (Figure 1). +Vo Vin I Figure 1 Cin DC DC Cout GND 0V T 4. Output Voltage Regulation and Over-voltage Protection Circuit N The simplest device for output voltage regulation, over-voltage and over-current protection is a linear voltage regulator with overheat protection that is connected to the input or output end in series (Figure 2). REG +Vo Vin REG O Figure 2 DC DC GND 0V 5. External Capacitor Table C It is not recommended to connect any external capacitor in the application field with less than 0.5 W output. Vin Cin Vout Cout (Vdc) (µF) (Vdc) (µF) STable 1 3.3/5 4.7 3.3/5 10 12 2.2 9 4.7 15 2.2 12 2.2 24 0.47 15 1 I -- -- 24 0.47 D Note: 1. All specifications are measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified. c u i . c o m

For more information, please visit the product page. CUI Inc │ SERIES: VBT1-SMT │ DESCRIPTION: DC-DC CONVERTER date 05/25/2014 │ page 5 of 5 REVISION HISTORY D rev. description date 1.0 initial release 01/14/2011 E 1.01 new template applied 04/11/2012 1.02 V-Infinity branding removed 09/05/2012 1.03 added TR package option 11/01/2012 U 1.04 discontinued alternate pin configuration, "X", option 07/09/2013 1.05 reflow solder profile changed 05/25/2014 The revision history provided is for informational purposes only and is believed to be accurate. N I T N O C S I D 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.