For more information, please visit the product page. date 05/25/2014 page 1 of 5 SERIES: VBT1-SMT │ DESCRIPTION: DC-DC CONVERTER 1 W isolated output industry standard 8 pin SMT package single unregulated outputs 1,000 V isolation short circuit protection UL safety approvals (some models) wide temperature (-40~85°C) efficiency up to 79% U • • • • • • • • ED FEATURES RoHS input voltage output voltage typ (Vdc) range (Vdc) (Vdc) VBT1-S3.3-S3.3-SMT 3.3 3.0~3.63 3.3 VBT1-S3.3-S5-SMT 3.3 3.0~3.63 5 VBT1-S5-S3.3-SMT 5 4.5~5.5 VBT1-S5-S5-SMT 5 4.5~5.5 VBT1-S5-S9-SMT 5 VBT1-S5-S12-SMT 5 VBT1-S5-S15-SMT VBT1-S5-S24-SMT output current output power ripple and noise1 efficiency max (W) max (mVp-p) typ (%) N MODEL min (mA) max (mA) 303 1 75 73 200 1 75 74 3.3 30 303 1 75 72 5 20 200 1 75 77 4.5~5.5 9 12 111 1 75 76 4.5~5.5 12 9 84 1 75 79 5 4.5~5.5 15 7 67 1 75 78 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 12 10.8~13.2 12 9 84 1 75 73 12 10.8~13.2 15 7 67 1 75 74 12 10.8~13.2 24 4 42 1 75 79 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-S12-S15-SMT VBT1-S12-S24-SMT N IS C VBT1-S15-S5-SMT O VBT1-S12-S12-SMT TI 30 20 VBT1-S24-S5-SMT 24 21.6~26.4 5 20 200 1 75 70 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 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 1. ripple and noise are measured at 20 MHz BW D Notes: PART NUMBER KEY VBT1 - SXX - SXX -SMT - X Base Number Input Voltage Output Voltage cui.com Packaging Style Package Options "blank" = standard TR = Tape & Reel 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 conditions/description min typ max units operating input voltage 3.3 V model 5 V model 12 V model 15 V model 24 V model 3.0 4.5 10.8 13.5 21.6 3.3 5 12 15 24 3.63 5.5 13.2 16.5 26.4 Vdc Vdc Vdc Vdc Vdc parameter conditions/description min typ max units line regulation for Vin change of 1%, 3.3 V model for Vin change of 1%, all other models 1.5 1.2 % % load regulation measured from 10% load to full load 3.3 V model 5 V model 9 V model 12 V model 15 V model 24 V model 20 15 10 10 10 10 % % % % % % voltage accuracy see derating curves switching frequency 100% load, 5 and 12 V input 100% load, 24 V input 100% load, all other models 500 kHz kHz kHz PROTECTIONS parameter N TI temperature coefficient conditions/description short circuit protection min N SAFETY AND COMPLIANCE 15 12.8 8.3 6.8 6.3 6.0 U OUTPUT ED parameter ±0.03 typ max units 1 s max units isolation voltage for 1 minute at 1 mA max. 1,000 Vdc isolation resistance at 500 Vdc 1,000 MΩ 3,500,000 hours MTBF RoHS compliant UL 60950-1 (E222736) yes 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 IS C Notes: O conditions/description safety approvals typ %/°C parameter 1 min 100 500 100 ENVIRONMENTAL parameter conditions/description min operating temperature storage temperature storage humidity max units -40 typ 85 °C -55 125 °C 95 % non-condensing at full load see reflow soldering profile 25 °C 245 D temperature rise reflow soldering cui.com °C 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 25 0 24 5 Peak .Temp 245˚C( Max.) 21 7 60 Sec Max ( >217˚ C) ED Tem peratur e (˚C ) 20 0 15 0 10 0 50 0 U Tim e (se c.) DERATING CURVES 1. output power vs. ambient temperature 2. output voltage vs. output current +10% Output Voltate (%) 80 60 40 20 -20 0 20 40 60 85 105 120 Ambient Temperature (°C) MECHANICAL 10% conditions/description 12.70 x 11.20 x 6.25 (0.500 x 0.441 x 0.246 inch) case material plastic (UL94-V0) MECHANICAL DRAWING -7.5% 50% min typ 1.41 O (Side View) IS C D 6.00 [0.236] 0.60 [0.024] 0.25 [0.010] 12.70 [0.500] 8 7.50 [0.295] 7 6 2 3 11.20 [0.441] 4 1.35 [0.053] 5 2.54 [0.100] 1 2 3 4 2.10 [0.083] 1.00 [0.039] 2.54 [0.100] PIN 8.50 [0.335] A 6 PIN CONNECTIONS A 0.25 [0.010] 7 5 (Top View) 1 8 10.10 [0.398] 2.54 [0.100] 0.25 [0.010] 5° max cui.com 100% max units mm units: mm [inches] tolerance: ±0.15 [±0.006] pin section tolerance: ±0.10 mm [±0.004] 6.25 [0.246] -2.5% Output Current (%) N parameter dimensions weight +2.5% Voltage TI -40 +5% Nominal N Load (%) 100 FUNCTION 1 GND 2 +Vin 4 0V 5 +Vo 3,6,7 NC 8 NC g 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 ED 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 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. +Vo Vin DC DC Cin Cout 0V TI GND N Figure 1 U 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). 4. 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). REG N Vin GND O Figure 2 REG +Vo DC DC 0V 5. External Capacitor Table It is not recommended to connect any external capacitor in the application field with less than 0.5 W output. Cin (µF) Vout (Vdc) Cout (µF) 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 -- -- 24 0.47 D IS C Table 1 Vin (Vdc) Note: 1. All specifications are measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified. cui.com 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 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 1.04 discontinued alternate pin configuration, "X", option 1.05 reflow solder profile changed ED rev. 04/11/2012 09/05/2012 11/01/2012 07/09/2013 05/25/2014 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.