For more information, please visit the product page. date 10/31/2012 page 1 of 5 SERIES: VAT1-SMT │ DESCRIPTION: DC-DC CONVERTER 1 W isolated output industry standard 10 pin SMT package dual unregulated outputs 1,000 V isolation short circuit protection UL safety approvals (some models) wide temperature (-40~85°C) efficiency up to 78% U • • • • • • • • ED FEATURES input voltage MODEL typ (Vdc) range (Vdc) (Vdc) 5 4.5~5.5 output current output power ripple and noise1 efficiency min (mA) max (mA) max (W) max (mVp-p) typ (%) ±5 ±10 ±100 1 75 71 TI VAT1-S5-D5-SMT output voltage N RoHS VAT1-S5-D9-SMT 5 4.5~5.5 ±9 ±6 ±56 1 75 77 VAT1-S5-D12-SMT 5 4.5~5.5 ±12 ±5 ±42 1 75 78 5 4.5~5.5 ±15 ±4 ±33 1 75 78 12 10.8~13.2 ±5 ±10 ±100 1 75 71 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 N VAT1-S5-D15-SMT VAT1-S12-D5-SMT 12 10.8~13.2 ±15 ±4 ±33 1 75 74 24 21.6~26.4 ±5 ±10 ±100 1 75 72 24 21.6~26.4 ±9 ±6 ±56 1 75 74 24 21.6~26.4 ±12 ±5 ±42 1 75 76 VAT1-S24-D9-SMT VAT1-S24-D12-SMT VAT1-S24-D15-SMT 24 21.6~26.4 ±15 ±4 ±33 1 75 77 24 21.6~26.4 ±24 ±2 ±21 1 75 78 IS C VAT1-S24-D24-SMT O VAT1-S12-D15-SMT VAT1-S24-D5-SMT Notes: 1. ripple and noise are measured at 20 MHz BW D PART NUMBER KEY VAXT1 - SXX - DXX -SMT - X Base Number X indicates ALT PIN configuration, see page 3 Output Voltage Input Voltage Package Options "blank" = standard TR = Tape & Reel Packaging Style cui.com For more information, please visit the product page. CUI Inc │ SERIES: VAT1-SMT │ DESCRIPTION: DC-DC CONVERTER date 10/31/2012 │ page 2 of 5 INPUT conditions/description min typ max units operating input voltage 5 V model 12 V model 24 V model 4.5 10.8 21.6 5 12 24 5.5 13.2 26.4 Vdc Vdc Vdc conditions/description min typ max units 1.2 % 15 10 10 10 10 % % % % % OUTPUT for Vin change of 1% load regulation measured from 10% load to full load 5 V model 9 V model 12 V model 15 V model 24 V model voltage accuracy see derating curves switching frequency 100% load, 5 and 12 V input 100% load, 24 V input temperature coefficient TI PROTECTIONS parameter conditions/description short circuit protection SAFETY AND COMPLIANCE 12.8 8.3 6.8 6.3 6.0 N line regulation U parameter ED parameter min kHz kHz ±0.03 %/°C typ units 1 s max units for 1 minute at 1 mA max. 1,000 Vdc isolation resistance at 500 Vdc 1,000 MΩ safety approvals1 UL 60950-1 (E222736) 3,500,000 hours N conditions/description isolation voltage Notes: O MTBF typ max parameter RoHS compliant min 100 500 yes 1. 24 V input models UL 60950-1 pending IS C ENVIRONMENTAL parameter conditions/description min typ max units operating temperature -40 85 °C storage temperature -55 125 °C storage humidity non-condensing temperature rise at full load lead temperature 1.5 mm from case for 10 seconds D 15 cui.com 95 % 25 °C 260 °C For more information, please visit the product page. CUI Inc │ SERIES: VAT1-SMT │ DESCRIPTION: DC-DC CONVERTER date 10/31/2012 │ page 3 of 5 DERATING CURVES 2. output voltage vs. output current ED 1. output power vs. ambient temperature +10% Output Voltate (%) Load (%) 100 80 60 40 20 -20 0 20 40 60 85 105 120 -7.5% N conditions/description dimensions 0.600 x 0.441 x 0.250 (15.24 x 11.22 x 6.50 mm) min case material plastic (UL94-V0) typ 100% 1.70 O IS C D PIN CONNECTIONS cui.com max units inch N TI parameter units: mm [inches] tolerance: ±0.15 [±0.006] pin section tolerance: ±0.10 mm [±0.004] 50% Output Current (%) MECHANICAL MECHANICAL DRAWING -2.5% 10% Ambient Temperature (°C) weight +2.5% Voltage U -40 +5% Nominal PIN FUNCTION ALT FUNCTION 1 -Vin -Vin 2 +Vin +Vin 4 COM COM 5 -Vo -Vo +Vo 7 +Vo 10 NC NC 3,6,8,9 NC No PIN g For more information, please visit the product page. CUI Inc │ SERIES: VAT1-SMT │ DESCRIPTION: DC-DC CONVERTER date 10/31/2012 │ page 4 of 5 APPLICATION NOTES 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 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 the 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 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). U ED 1. Figure 2 Vin REG O GND 0V -Vo REG +Vo REG -Vo 0V DC DC External Capacitor Table It is not recommended to connect any external capacitor in the application field with less than 0.5 W output. Table 1 Vin (Vdc) Cout (μF) Vout (Vdc) 3.3/5 4.7 ±3.3/±5 4.7 12 2.2 ±9 2.2 Cout (μF) 24 1 ±12 1 -- -- ±15 1 D IS C 5. Cout Output Voltage Regulation and Over-voltage Protection Circuit 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). N 4. DC DC Cin Cout TI GND +Vo N Figure 1 Vin cui.com For more information, please visit the product page. CUI Inc │ SERIES: VAT1-SMT │ DESCRIPTION: DC-DC CONVERTER date 10/31/2012 │ page 5 of 5 REVISION HISTORY description date 01/14/2011 1.0 initial release 1.01 new template applied 1.02 V-Infinity branding removed 1.03 added TR package option ED rev. 04/11/2012 09/05/2012 10/31/2012 D IS C O N TI N U 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.