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Ultra Low Noise, Ultra Compact, Isolated type DC -DC Converter b 6Watt BLC12 Series DC- DC Converter BDD20170524_A01 The BLC series isolated-type DC-DC converters feature a small package As ultralow noise and extremely high efficiency are made possible by a new circuit, it is ideal for an analog circuit as well as an analog and digital hybrid circuit. ¡ Features - Ultra low noise - Adjustable Output Voltage - ON/OFF Control - Dual power supply usable as single power supply - Withstand voltage AC500V - Over Current Protection Circuit - No tantalum capacitor or electrolytic capacitor - Covered with a metal shield - Surface Mount Package - No heat sink needed - Operating Temp Range -40°C to +85°C (Temperature derating required) - RoHS Compliant ¡Model/Rating Table 1 Models BLC Series Input V Vdc Output V Vdc Output I mA Line Reg. mV(max.) Load Reg. mV(max.) Ripple Noise mVpp(typ.) Efficiency %(typ.) BLC12-05S120 9 to 18 5 0 to 1200 20 40 8 80 BLC12-12S50 12(15) 0 to 500(400) 40 100 8 83 BLC12-12W25 ±12(±15) 0 to 250(200) 80 600 8 83 Note 1: Output voltage in parentheses is when Vadj and –Vout are short-circuited. Note 2: Output current in parentheses is at the maximum output voltage. Note 3: Ripple noise and efficiency are at 12V input voltage and load rating. Note 4: Ripple noise is measured at 20MHz bandwidth, with a multi layered ceramic capacitor with 10μF at input and 0.47μF at output ■ Specifications Table 2 Input voltage range Refer to Table 1 Rated output voltage 5.0V±3%, 12V±3% , ±12V±5% (When Vadj terminal is open) Line regulation Refer to Table 1 (Rated output, Input voltage varying in the range of Table 1) Load regulation Refer to Table 1 (Rated input/output, Load varying from 0 to 100%, ±output is upon loaded evenly) Temperature regulation 40mV typ.(5.0V model), 100mV typ. (12V model), 150mV typ. (±12V model) (Rated input/output, for within ambient temperature range with 100% load at temperature derating) Ripple noise Refer to Table 1 (Rated input/output, common temp, measurement frequency bandwidth 20MHz) Efficiency 80% to 83% typ. (Rated input/output, Common temp., Refer to Table 1) Over current protection Operate at 105% or above of rated load current. Auto restart type. Over voltage protection None Under Voltage Lock Out Yes (Refer page 9) Input over current protection Input circuit has a built-in fuse (Refer page 9) Remote ON/OFF control Between 2Pin (-Vin) and 3Pin (ON/OFF): Output is ON when open, output is OFF when short. Standby current 4mA max. Withstand voltage Between input and output, input and case, output and case: AC500V/per minute. Insulation resistance Between input and output, input and case, output and case: 50MΩ or more (at DC500V) Capacitance between P and S Approx. 40 to 90pF (depending on the model) Operating temp range Operating temperatures −40°C to +85°C (Refer to temp derating of page4) Storage temp range Storage temperatures -40°C to +85°C Humidity range 20 to 95%R.H. (Max. wet bulb temp 35°C with no condensation) Storage conditions Below 30°C/60% R.H. before mounting the converter Cooling conditions Natural cooling (install in a well-ventilated place) Vibration 10 to 55Hz Total amplitude 1.52mmp-p (2H for each of three directions) Sweep time 15 min Impact Acceleration 100G (3 times for each of three directions, total 18 times) Duration 6ms Weight 5.4g typ. Outer dimensions W=23.2 L=21.1 H=9.7 typ.(mm)(For dimensional details, refer to the shape and dimensions in the datasheet) ＊The above specifications are provided with rated input/output and ambient temperature 25°C±5°C, unless otherwise specified. ＊The contents provided in this datasheet may be changed at any time without prior notice.

Ultra Low Noise, Ultra Compact, Isolated type DC -DC Converter b 6Watt BLC12 Series DC- DC Converter BDD20170524_A01 1. Scope These specifications shall apply to the DC input, isolated type DC-DC converter BLC12 series. 2. Model/Rating Model name Rated input voltage Rated output Shape Remarks BLC12-05S120 DC12.0V 5.0V,1200mA SMD BLC12-12S50 12.0V,500mA BLC12-12W25 ±12V, each 250mA Unless otherwise mentioned in these specifications, input shall be rated input, output shall be rated output, and ambient temperature shall be 25°C±5°C. 3. Environmental conditions 3-1 Temperature range In operation −40°C to +85°C (Derating required) In storage −40°C to +85°C 3-2 Humidity range In operation 20 to 95%R.H. (However, max. wet bulb temperature 35°C, no condensation) In storage 20 to 95%R.H. (However, max. wet bulb temperature 35°C, no condensation) Note) Store in a place below 30°C and 60% R.H. before mounting.

Ultra Low Noise, Ultra Compact, Isolated type DC -DC Converter b 6Watt BLC12 Series DC- DC Converter BDD20170524_A01 4. Specifications & Standards This product complies with RoHS Directive and Bellnix Environmental Management Regulations. 4-1 Input conditions and output characteristics Model name Input voltage V Output voltage V Output current mA Output voltage stability*2 Output ripple noise *3 mVp-p typ. / max Efficiency typ. Input mV max. Load mV max. Temp. mV max. BLC12-05S120 9.0 to 18.0 5±3% 0 to 1200 20 40 40 8/ 20 80 BLC12-12S50 9.0 to 18.0 12±3% 0 to 500 40 100 100 8/ 20 83 BLC12-12W25 9.0 to 18.0 ±12±5% 0 to 250×2 80 600 150 8/ 20 83 *1 With the measurement circuit of 4- 4. Unless otherwise mentioned, input and output values are rated and ambient temperature shall be 25°C±5°C. *2 Input: Input voltage varying from min. to max. Load: Output current varying from 0 to rated. Temperature: Ambient temperatures varying from -40 to Tamax. Within ambient temperature range with 100% load at temperature derating of 4-3. A two output product is when + output current and – output current are equal. *3 Frequency bandwidth 20MHz measured at both ends of external capacitor (C2, or C4, C5). 4-2 Capacitance of external capacitor This product has a limited capacitance for output external capacitors. Limit the ca pacitance of an external capacitor as follows: External output capacitor Model name Capacitance Plus output side Minus output side BLC12-05S120 0 to 220μF *1 — BLC12-12S50 0 to 100μF *1 — BLC12-12W25 0 to 100μF *2 0 to 100μF *3 *1 Total of C2 and C3 in the Standard Connection Circuit of 6-1 *2 Total of C2 and C4 in the Standard Connection Circuit of 6-2 *3 Total of C3 and C5 in the Standard Connection Circuit of 6-2

Ultra Low Noise, Ultra Compact, Isolated type DC -DC Converter b 6Watt BLC12 Series DC- DC Converter BDD20170524_A01 4-3 Temperature derating -30 -20 -10 0 10 20 30 40 50 60 70 80 -40 100 周囲温度（℃） 負荷率（％） 自然空冷 Note) at rated output 4-4 Measurement circuit +Vin1 SW1 Open:出力=ON Shrt:出力=OFF SW2 Open:Vout=5V Shrt:Vout=5V→6V C1=10μF(積層セラミック) C2=0.47μF(積層セラミック） BLC-S Series +Vin -Vin2 ON/OFF3 SW1 +Vout -Vout NC Vadj SW25 Load V A V A +Vin1 オシロスコープ （リップル･ ノイズの測定） Cx Rx 同軸ケーブル:50Ω 1.5m Rx:51Ω Cx:0.1μF SW1 Open:出力=ON Shrt:出力=OFF SW2 Open:Vout=±12V Shrt:Vout=±12V→±15V C3=10μF(積層セラミック) C4,C5=0.47μF（積層セラミック） BLC-W Series +Vin -Vin2 ON/OFF3 SW1 +Vout Common -Vout Vadj SW2 Load OSC +Vout -Vout GND Load A A A V V V Natural cooling Load rate (%) Ambient temperature (°C) Output ON Output OFF (Multi-layered ceramic capacitor) (Multi-layered ceramic capacitor) Output ON Output OFF (Multi-layered ceramic capacitor) (Multi-layered ceramic capacitor) Coaxial cable Oscilloscope (Measurement of ripple noise)

Ultra Low Noise, Ultra Compact, Isolated type DC -DC Converter b 6Watt BLC12 Series DC- DC Converter BDD20170524_A01 4-5 Additional functions Item Specifications & Standards Conditions Over current protection circuit Operate at 105% or above, auto restart type Over voltage protection circuit None Adjustable output voltage range 4.75 to 6.0V (BLC12-05S120) 11.4 to 15V ( BLC12-12S50) ±11.4 to ±15V ( BLC12-12W25) By external resistor Refer to 7-3 ON/OFF control Output is ON when OPEN Low (0 to 0.5V, 4mA max.) for output OFF Refer to 7-1 4-6 Withstand voltage and Insulation resistance 1) Withstand voltage Between input and output, input and case, output and case: AC500V/per min 2) Insulation resistance Between input and output, input and case, output and case: 50MΩ or more (at DC500V) 5. Outer dimensions and description of terminals 5-1 Shape and dimensions Side View Bottom View 10 max. CL 1.5±0.1 1.8±0.2 5.08 CL 10.16 20.1 5.085.085.08 Bdllmiw ISOLATED DC-DC CONVERTER BLC12-05S120 23.2±0.5 21.1±0.5 0.25 min. Top View 1ピンマーク 会社ロゴ 製品型名 Lot No. Pin Function BLC-S BLC-W 1 +Vin +Vin 2 -Vin -Vin

3 ON/OFF ON/OFF

4 Vadj Vadj

5 NC -Vout

Materials of terminals and case Plating: Gold plating after nickel plating - Unit: mm - Dimensional tolerance (unless specified):±0.3 - Weight: 5.4g typ. - Tolerance on terminals 0.2 mm max. (Max. lifting of the terminal part when placed on a plane)

1 Pin mark

Ultra Low Noise, Ultra Compact, Isolated type DC -DC Converter b 6Watt BLC12 Series DC- DC Converter BDD20170524_A01 5-2 Recommended footprint dimensions 2.1 10.16 5.085.085.08 20.1 2.6 5.08 CL CL Note) Recommended dimensions are shown above. Use your design standard for your specific design. 5-3 Lot indication 3 Ｄ２ 製造管理密番（無表示の場合もあり。) 製造月（1～9月=1～9、10月=O、11月=N、12月=D) 製造年（西暦末尾1桁） (2013年 1月製造) (2013年12月製造) 6. Standard connection circuit 6-1 BLC-S series +Vin1 SW1 Open:出力=ON Short:出力=OFF SW2 Open:Vout=5V,12V Short:Vout=5V→6V =12V→15V C1=22μF C2=22μF C3=0.47μF BLC-S Series +Vin -Vin ON/OFF3 SW1 +Vout -Vout NC Vadj SW25 Load 6-2 B LC-W series +Vin1 SW1 Open:出力=ON Short:出力=OFF SW2 Open:Vout=±12V Short:Vout=±12V→±15V C1=22μF C2,C3=22μF C4,C5=0.47μF BLC-W Series +Vin -Vin ON/OFF3 +Vout Common -Vout Vadj SW2 Load Load SW1 (Manufactured in January 2013) (Manufactured in December 2013) Production code for manufacturing control (may not be indicated) Manufacturing month (Jan to Sep = 1 to 9, Oct = O, Nov = N, Dec = D) Manufacturing year (the last digit of A.D.) Output ON Output OFF Output ON Output OFF

Ultra Low Noise, Ultra Compact, Isolated type DC -DC Converter b 6Watt BLC12 Series DC- DC Converter BDD20170524_A01 7. Various functions 7-1 ON/OFF control The ON/OFF control function enables users to control ON/OFF of the output voltage without inputting or cutting it off. Between –Vin terminal (No. 2 pin) and ON/OFF terminal (No. 3 pin) Open (6V max.) : Output ON Short (0 to 0.5V, 4mA max.) : Output OFF 7-2 Output over current protection If output current has reached over current status, the over current protection circuit is activated lowering the output voltage. (Activating point: 105% or above of the rated load current) The converter should automatically returns to normal operation as soon as the over current status is resolved, if this does not occur, turn off the power or turn the output OFF with an ON/OFF control and then reactivate. Holding of over current status for over 30 seconds may result in damage, so resolve over current status within 30 seconds. Characteristics in the over current mode 7-3 Note) A drooping characteristic may be seen in the over current protection state as shown on the left figure. Note that output voltage may not go up if connected to a nonlinear load such as a lamp, motor, etc., or a constant current load. or ON/OFF -Vin +Vin Output Current[%] Output Voltage[%] 100 1000

Ultra Low Noise, Ultra Compact, Isolated type DC -DC Converter b 6Watt BLC12 Series DC- DC Converter BDD20170524_A01 Adjustable Output voltage 7-3-1 Short circuit ing Vadj and –Vout terminals Output voltage can be set at the maximum as per the following table by short -circuiting Vadj and –Vout terminals. In case of no variable output voltage, open the terminal. Output voltage for the connection of Vadj terminal Model name Between Vadj and –Vout terminals Open Short BLC12-05S120 5.0V 6.0V BLC12-12S50 12.0V 15.0V BLC12-12W25 ±12.0V ±15.0V 7-3-2 Resistor adjustment control The output voltage is adjustable by inserting a resistor between Vadj terminal and +Vout terminal or –Vout terminal. To decrease the output voltage To increase the output voltage Model name To decrease the output voltage Output voltage: Vo[V], Connecting resistor: Rb[kΩ] To increase the output voltage Output voltage: Vo[V], Connecting resistor: Ra[kΩ] BLC12-05S120 Variable range: Vo=4.75V min. Variable range: Vo=6.0V max. BLC12-12S50 Variable range: Vo=11.4V min. Variable range: Vo=15.0V max. BLC12-12W25 Variable range: Vo=22.8V min. (±11.4V min.) Variable range: Vo=30.0V max. (±15.0V max.) Note) If output voltage is made variable, use at the maximum power or less. If output voltage is made lower, do not connect Rb to resistor which is less than Vo min. setting resistor value. *1 *1 7 +Vout

4 Vadj

6 Com

Ultra Low Noise, Ultra Compact, Isolated type DC -DC Converter b 6Watt BLC12 Series DC- DC Converter BDD20170524_A01 7-4 Activation and deactivation voltage This product has an under voltage lock out function to prevent malfunction when there is low input voltage. The activation voltage and deactivation voltage is within the range shown in the table bel ow. Range of activation and deactivation voltage 7.0 to 8.6V 7-5 Input circuit protection function This input circuit has a built -in fuse to protect the secondary circuit against over current that runs for any reason. Rated current and fusing current of the built -in fuse are as shown in the following table. Power supply should have more current capacity than the following fusing current to ensure a fuse blowout in an emergency. Rated current 2.5A Fusing current 5A or more 8. Protection against reverse connection of input power supply (example) This product may be damaged if erroneously connected with reverse input polarity. To cope with a possible reverse connection, add a protection circuit as shown in the following figure. The following is an example using a fuse and a diode. 9. Common mode noise reduction method (example) To reduce common mode noise of this product, connect a capacitor of 1000pF or so (C4) between the primary and secondary terminals as shown in the following figure . In this case, note that using a capacitor of too much capacitance may result in the increase of coupling capacitance between primary and secondary terminals. Also, select a capacitor in consideration of required withstand voltage. (Noise on the primary side may run through t o the secondary side through C4 according to conditions, so check in actual use conditions.) 10. Input feedback noise reduction method (example) Input feedback noise from the convertor can be reduced by designing a Pi filter at input side as shown in the following figure. Add as needed. 2 6 7+Vin -Vin +Vin Load -Vout +Vout BLC-S Series Fuse C1 C2 C3D1 2 6 7+Vin -Vin +Vin Load -Vout +Vout BLC-S Series Fuse C1 C2 C3D1 2 6 7+Vin -Vin +Vin BLC-S SeriesC2C1

Ultra Low Noise, Ultra Compact, Isolated type DC -DC Converter b 6Watt BLC12 Series DC- DC Converter BDD20170524_A01 11. Serial operation method (example) Serial operation is possible by wiring this product as per the following figure. Limit the output current not to exceed the smaller rated current of the power supplies connected in series to avoid more current than rating to run into the power supply. Note) This product is not suitable for parallel operation. Schottky diodes of low forward voltage are recommended for D1 and D2. 12. Soldering conditions Observe the following conditions for soldering temperature and time. Flow mounting is not possible for this product. Reflow method Reflow temperature profile In the case of Sn-3Ag-0.5Cu series solder A A' B' CB 半田付け時間(s) 部品表面温度(℃) Ty1 Ty2 TP 225 C B 1.0 ~ 5.0℃/s Ty1 ~ Ty2: 1.0 ~ 4.0℃/s 225℃以上: TP: Ty2: Ty1: 1.0 ~ 3.0℃/s 40 ~ 100s 170±10℃ 150±10℃ 245℃max. 20 ~ 40s A Refrain from causing vibration of the product during the reflow. The number of reflows shall be once (no mounting of the reverse side). * Eutectic solder may be used so far as within the above profile condition. 2 6 7+Vin -Vin +Vin -Vout +Vout BLC-S Series D1 2 6 7+Vin -Vin -Vout +Vout BLC-S Series D2 Load Parts surface temperature (°C) and over Soldering time (s)

Ultra Low Noise, Ultra Compact, Isolated type DC -DC Converter b 6Watt BLC12 Series DC- DC Converter BDD20170524_A01 13. Vibration and impact tests Vibration 10 to 55Hz Total amplitude 1.52mmp-p (2H for each of three directions) Sweep time 15 minutes Impact Acceleration 100G (3 times for each of 6 directions, total 18 times) Impact time 6ms 14. Cleaning This product is not for immersible cleaning. Use of no-clean flux is recommended. 15. Precautions for use To ensure user’s safety, check specifications before using the product and always observe the following precautions for use.

  • This product is intended for use in general electronics equipment (office equipment, communication equipment, measurement equipment). Do not use the product for medical equipment, nuclear equipment, trains, etc., whereby human life or property may be directly affected by damaged product. Consult with us for any use other than for such general electronics equipment.
  • Minor changes and component parts changes that do not affect contents of the specifications will be made due to characteristic improvement of the product and other reasons without prior notice.
  • This product is not suitable for parallel operation.
  • Do not use connectors and sockets for mounting the product. Contact resistance may have an adverse effect on the performance. Use the soldering method for mounting on the printed circuit board.
  • This equipment has a built-in over current protection circuit but avoid a prolonged short circuit which may lead to failure.
  • This product may be damaged if used under nonstandard electrical conditions or nonstandard environmental conditions including temperature. Ensure use within the standards.
  • Avoid using this product in a place that generates corrosive gas or is dusty.
  • This product may be damaged by static electricity. Make sure that the workplace is guarded against static buildup and static electricity on operators by use of proper grounding.
  • This product has no built-in function for over voltage protection.
  • This product does not come with a test report. 16. Warranty The warranty term of the product is one year after shipment. Should the product become defective within the warranty period due to our design or workmanship, the product will be repaired free of charge or replaced. However, this warranty does not cover products which have been subjected to unauthorized inner modifications, etc. The scope of our warranty is limited to that of the said product. 17. Contact If you have any further technical questions for this product, please contact us. E-mail: info@bellnix.com URL: http://www.bellnix.com