Additional Resources: Product Page ddaattee 1100//3311//22001122 ppaaggee 11 ooff 55 SERIES: VAT1-SMT │ DESCRIPTION: DC-DC CONVERTER D FEATURES • 1 W isolated output E • industry standard 10 pin SMT package • dual unregulated outputs • 1,000 V isolation • short circuit protection U • UL safety approvals (some models) • wide temperature (-40~85°C) • efficiency up to 78% N RoHS I MODEL input output output output ripple effi ciency voltage voltage Tcurrent power and noise1 typ range min max max max typ (Vdc) (Vdc) (Vdc) (mA) (mA) (W) (mVp-p) (%) VAT1-S5-D5-SMT 5 4.5~5.5 ±5 ±10 ±100 1 75 71 VAT1-S5-D9-SMT 5 4.5~5.5 ±9N ±6 ±56 1 75 77 VAT1-S5-D12-SMT 5 4.5~5.5 ±12 ±5 ±42 1 75 78 VAT1-S5-D15-SMT 5 4.5~5.5 ±15 ±4 ±33 1 75 78 VAT1-S12-D5-SMT 12 10.8~13.2 ±5 ±10 ±100 1 75 71 O VAT1-S12-D9-SMT 12 10.8~13.2 ±9 ±6 ±56 1 75 73 VAT1-S12-D12-SMT 12 10.8~13.2 ±12 ±5 ±42 1 75 74 VAT1-S12-D15-SMT 12 10.8~13.2 ±15 ±4 ±33 1 75 74 VAT1-S24-D5-SMT 24 21.6~26.4 ±5 ±10 ±100 1 75 72 C VAT1-S24-D9-SMT 24 21.6~26.4 ±9 ±6 ±56 1 75 74 VAT1-S24-D12-SMT 24 21.6~26.4 ±12 ±5 ±42 1 75 76 VAT1-S24-D15-SMT 24 21.6~26.4 ±15 ±4 ±33 1 75 77 VAT1-S24-D24-SMT S 24 21.6~26.4 ±24 ±2 ±21 1 75 78 Notes: 1. ripple and noise are measured at 20 MHz BW PART NUMIBER KEY D VAXT1 - SXX - DXX -SMT - X Base Number Output Voltage Package Options X indicates ALT PIN "blank" = standard confi guration, see page 3 TR = Tape & Reel Input Voltage Packaging Style cui.com

Additional Resources: Product Page CUI Inc │ SERIES: VAT1-SMT │ DESCRIPTION: DC-DC CONVERTER date 10/31/2012 │ page 2 of 5 INPUT D parameter conditions/description min typ max units 5 V model 4.5 5 5.5 Vdc operating input voltage 12 V model 10.8 12 13.2 Vdc 24 V model 21.6 24 26.4 Vdc E OUTPUT parameter conditions/description min typ max units line regulation for Vin change of 1% U 1.2 % measured from 10% load to full load 5 V model 12.8 15 % 9 V model 8.3 10 % load regulation 12 V model 6.8 10 % 15 V model N 6.3 10 % 24 V model 6.0 10 % voltage accuracy see derating curves 100% load, 5 and 12 V input 100 kHz switching frequency 100% load, 24 V input 500 kHz I temperature coeffi cient ±0.03 %/°C PROTECTIONS T parameter conditions/description min typ max units short circuit protection 1 s N SAFETY AND COMPLIANCE parameter conditions/description min typ max units isolation voltage for 1 minute at 1 mA max. 1,000 Vdc O isolation resistance at 500 Vdc 1,000 MΩ safety approvals1 UL 60950-1 (E222736) MTBF 3,500,000 hours RoHS compliant yes C Notes: 1. 24 V input models UL 60950-1 pending ENVIRONMENTAL parameter S conditions/description min typ max units operating temperature -40 85 °C storage temperature -55 125 °C storage humidity non-condensing 95 % I temperature rise at full load 15 25 °C lead temperature 1.5 mm from case for 10 seconds 260 °C D cui.com

Additional Resources: Product Page CUI Inc │ SERIES: VAT1-SMT │ DESCRIPTION: DC-DC CONVERTER date 10/31/2012 │ page 3 of 5 DERATING CURVES D 1. output power vs. ambient temperature 2. output voltage vs. output current +10% E 100 %) +5% %) 80 ate ( NVoomltaingael +-22..55%% Load ( 6400 put Volt U -7.5% ut O 20 -40 -20 0 20 40 60 85 105 120 10% 50% 100% N Ambient Temperature (°C) Output Current (%) MECHANICAL I parameter conditions/description min typ max units dimensions 0.600 x 0.441 x 0.250 (15.24 x 11.22 x 6.50 mm) inch case material plastic (UL94-V0) T weight 1.70 g MECHANICAL DRAWING N units: mm [inches] tolerance: ±0.15 [±0.006] pin section tolerance: ±0.10 mm [±0.004] O C S I PIN CONNECTIONS PIN FUNCTION ALT FUNCTION D 1 -Vin -Vin 2 +Vin +Vin 4 COM COM 5 -Vo -Vo 7 +Vo +Vo 10 NC NC 3,6,8,9 NC No PIN cui.com

Additional Resources: Product Page CUI Inc │ SERIES: VAT1-SMT │ DESCRIPTION: DC-DC CONVERTER date 10/31/2012 │ page 4 of 5 APPLICATION NOTES D 1. Requirement on Output Load In order to ensure the product operates effi ciently and reliably, make sure the specifi ed 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 specifi ed minimum load, the output ripple may increase sharply while its effi ciency 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 fi ltering 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 fi lter 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 fi lter capacitor sees the external capacitor table. To get an extremely low ripple, an “LC” fi ltering network may be connected to the input and output ends of the DC/DC converter, which may produce a more signifi cant fi ltering effect. It should also be noted that the inductance and the frequency of the “LC” fi ltering network should be staggered with the DC/DC frequency to avoid mutual interference (Figure 1). +Vo Vin CoutI Figure 1 Cin DC DC 0V Cout GND -Vo T 4. Output Voltage Regulation and Over-voltage Protection Circuit The simplest device for output voltage regulation, over-voltagNe 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). Vin REG REG +Vo Figure 2 O DC DC 0V GND REG -Vo 5. External Capacitor Table C It is not recommended to connect any external capacitor in the application fi eld with less than 0.5 W output. Vin Cout Vout Cout (Vdc) (μF) (Vdc) (μF) STable 1 3.3/5 4.7 ±3.3/±5 4.7 12 2.2 ±9 2.2 24 1 ±12 1 -- -- ±15 1 I D cui.com

Additional Resources: Product Page CUI Inc │ SERIES: VAT1-SMT │ DESCRIPTION: DC-DC CONVERTER date 10/31/2012 │ 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-Infi nity branding removed 09/05/2012 1.03 added TR package option 10/31/2012 U 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.