For more information, please visit the product page. date 09/08/2015 page 1 of 5 SERIES: VBSD0.25-DIP │ DESCRIPTION: DC-DC CONVERTER 0.25 W isolated output industry standard 7 pin DIP package single unregulated outputs -40~85°C temperature range 1,000 Vdc isolation no heatsink required U • • • • • • ED FEATURES MODEL N RoHS output voltage output current output power ripple and noise efficiency range (Vdc) (Vdc) max (mA) max (W) max (mVp-p) typ (%) 3.0 ~ 3.6 5 50 0.25 100 64 4.5 ~ 5.5 5 50 0.25 100 64 4.5 ~ 5.5 9 28 0.25 100 65 4.5 ~ 5.5 12 21 0.25 100 67 4.5 ~ 5.5 15 17 0.25 100 65 12 10.8 ~ 13.2 3.3 76 0.25 100 64 12 10.8 ~ 13.2 5 50 0.25 100 65 12 10.8 ~ 13.2 9 28 0.25 100 66 12 10.8 ~ 13.2 12 21 0.25 100 67 12 10.8 ~ 13.2 15 17 0.25 100 66 24 21.6 ~ 26.4 5 50 0.25 100 63 24 21.6 ~ 26.4 9 28 0.25 100 63 24 21.6 ~ 26.4 12 21 0.25 100 65 VBSD0.25-S24-S15-DIP 24 21.6 ~ 26.4 15 17 0.25 100 66 VBSD0.25-S24-S24-DIP 24 21.6 ~ 26.4 24 10.4 0.25 100 66 typ (Vdc) VBSD0.25-S3.3-S5-DIP 3.3 5 VBSD0.25-S5-S9-DIP 5 VBSD0.25-S5-S12-DIP 5 VBSD0.25-S5-S15-DIP 5 VBSD0.25-S12-S3.3-DIP VBSD0.25-S12-S5-DIP VBSD0.25-S12-S12-DIP VBSD0.25-S12-S15-DIP VBSD0.25-S24-S5-DIP VBSD0.25-S24-S9-DIP IS C VBSD0.25-S24-S12-DIP O VBSD0.25-S12-S9-DIP N VBSD0.25-S5-S5-DIP Notes: TI input voltage 1. All specifications measured at TA=25°C, humidity <75%, nominal input voltage and rated output load unless otherwise specified D PART NUMBER KEY VBSD0.25-S XX - S XX -DIP Base Number Input Voltage cui.com Output Voltage For more information, please visit the product page. CUI Inc │ SERIES: VBSD0.25-DIP │ DESCRIPTION: DC-DC CONVERTER date 09/08/2015 │ page 2 of 5 INPUT conditions/description min typ max units operating input voltage 3.3 V model 5 V model 12 V model 24 V model 2.97 4.5 10.8 21.6 3.3 5 12 24 3.63 5.5 13.2 26.4 Vdc Vdc Vdc Vdc parameter conditions/description min typ max units line regulation for Vin change of 1% 3.3 V model all other models ±1.5 ±1.2 % % load regulation measured from 10% to full load 3.3 V model 5 V model 9 V model 12 V model 15 V model 20 15 15 15 15 % % % % % voltage accuracy see tolerance envelope graph switching frequency 100% load, input voltage range ±0.03 %/°C max units 1 s max units PROTECTIONS parameter N 15 10.5 8.3 6.8 6.3 TI temperature coefficient U OUTPUT conditions/description short circuit protection min N SAFETY AND COMPLIANCE ED parameter typ parameter conditions/description tested for 1 minute 1,000 Vdc insulation resistance at 500 Vdc 1,000 MΩ RoHS compliant yes 3,500,000 hours O typ kHz isolation voltage MTBF min 110 ENVIRONMENTAL conditions/description min IS C parameter typ max units case operating temperature -40 85 °C storage temperature -55 125 °C storage humidity non-condensing temperature rise 100% load lead temperature 1.5 mm from the case for 10 seconds D 15 cui.com 95 % 25 °C 300 °C For more information, please visit the product page. CUI Inc │ SERIES: VBSD0.25-DIP │ DESCRIPTION: DC-DC CONVERTER date 09/08/2015 │ page 3 of 5 Load (%) 100 80 60 40 20 -40 -20 0 20 40 60 85 105 U Ambient Temperature (°C) MECHANICAL conditions/description 0.500 x 0.394 x 0.303 (12.70 x 10.00 x 7.70 mm) case material plastic UL94-V0 typ max 2.1 g O N units: mm (inches) tolerance: ±0.25 (±0.010) pin section tolerance: ±0.10 (±0.004) IS C Side view 7 5 1 4 Bottom view 1 7 PIN CONNECTIONS 4 5 cui.com units inch TI MECHANICAL DRAWING D min N parameter dimensions weight ED DERATING CURVES 1 GND 4 Vin 5 +Vo 7 0V For more information, please visit the product page. CUI Inc │ SERIES: VBSD0.25-DIP │ DESCRIPTION: DC-DC CONVERTER date 09/08/2015 │ 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. 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). Figure 1 DC DC Cin +Vo Cout TI GND L N L Vin 0V N 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). Vi n O Figure 2 REG +Vout DC DC 0V D IS C GND R EG cui.com For more information, please visit the product page. CUI Inc │ SERIES: VBSD0.25-DIP │ DESCRIPTION: DC-DC CONVERTER date 09/08/2015 │ page 5 of 5 REVISION HISTORY description date 04/30/2008 1.0 initial release 1.01 new template applied, V-Infinity branding removed 1.02 updated datasheet ED rev. 08/31/2012 09/08/2015 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.