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| WRA_LT-2W & WRB_LT-2W Series 2W, WIDE INPUT, ISOLATED & REGULATED SINGLE/DUAL OUTPUT DC/DC CONVERTER multi-country patent protection RoHS FEATURES Wide (2:1) input range Operating temperature: -40C ~ +85C 1500VDC isolation No heat sink required Internal SMD construction MTBF>1,000,000 hours Short circuit protection(Automatic recovery) Industry standard pinout RoHS Compliance PRODUCT PROGRAM Input Part Number WRA1205LT-2W WRA1212LT-2W WRA1215LT-2W WRB1203LT-1W6 WRB1205LT-2W WRB1209LT-2W 12 9-18 22 Voltage (VDC) Nominal Range Max.* Voltage (VDC) 5 12 15 3.3 5 9 12 15 5 12 15 24 18-36 40 3.3 5 9 12 15 Output Current (mA) Max. 200 83 67 500 400 222 167 133 200 83 67 500 400 222 167 133 Min. 20 8 7 50 40 22 16 13 20 8 7 50 40 22 16 13 74 78 80 70 74 76 78 79 74 78 80 72 76 78 80 80 Efficiency (%, Typ.) APPLICATIONS The WRA_LT-2W & WRB_LT-2W Series are specially designed for applications where a wide range input voltage power supplies are isolated from the input power supply in a distributed power supply system on a circuit board. These products apply to: 1) Where the voltage of the input power supply is wide range(voltage range 2:1); 2) Where isolation is necessary between input and output (Isolation Voltage 1500VDC); 3) Where the regulation of the output voltage and the output ripple noise are demanded. WRB1212LT-2W WRB1215LT-2W WRA2405LT-2W WRA2412LT-2W WRA2415LT-2W WRB2403LT-1W6 WRB2405LT-2W WRB2409LT-2W WRB2412LT-2W WRB2415LT-2W *Input voltage can't exceed this value, or will cause the permanent damage. MODEL SELECTION WRB2412LT-2W Ra ted Power Package Style Output Voltage Input Voltage Product Series COMMON SPECIFICATIONS Item Storage humidity range Operating temperature Storage temperature Temp. rise at full load Lead temperature 1.5mm from case for 10 seconds -40 -55 15 245 Continuous, automatic recovery Free air convection Epoxy Resin (UL94-V0) 1000 5.2 K hours g Test conditions Min. Typ. Max. 95 85 125 C Units % MORNSUN Science & Technology co.,Ltd. Address: 2th floor 6th building, Huangzhou Industrial District, Guangzhou, China Tel: 86-20-38601850 Fax: 86-20-38601272 Http://www.mornsun-power.com Short circuit protection Cooling Package material MTBF Weight The copyright and authority for the interpretation of the products are reserved by Mornsun Specifications subject to change without notice. WRA_LT_2W & WRB_LT_2W A/2-2009 Page 1 of 3 ISOLATION SPECIFICATIONS Item Isolation voltage Isolation resistance Isolation Capacitance Test conditions Min. Typ. Max. Units VDC M 85 pF Tested for 1 minute and 1mA max. 1500 Test at 500VDC Input/Output 1000 TYPICAL TEMPERATURE CUTVE OUTPUT SPECIFICATIONS Item Output power Positive voltage accuracy Test conditions See above products program Refer to recommended circuit Min. 0.2 1 3 0.5 0.2 Typ. Max. 2 3 5 1* 0.5 Temperature () Units W 100 Operating Temp.( C ) Negative voltage accuracy Refer to recommended circuit Load regulation Line regulation Temperature Drift (Vout) Output ripple& noise** Switching frequency From 10% to 100% load Input voltage from low to high Refer to recommended circuit 20MHz Bandwidth 100% load, nominal input voltage % 250 Recom mend ed Reflow P rofile 5 0 Se c Max ( > 2 2 0 ) P e a k . Te m p 2 3 5 ~ 2 4 5 2 20 0.03 35 300 75 %/C mVp-p KHz 200 9 0 Se c Max ( > 1 9 0 ) 1 90 150 100 *Dual output models unbalanced load: 5%. **Test ripple and noise by "parallel cable" method. See detailed operation instructions at Testing of Power Converter section, application notes. 50 0 Time (sec.) APPLICATION NOTE Requirement On Output Load In order to ensure the product operate efficiently and reliably, in addition to a max load (namely full load), a minimum load is specified for this kind of DC/DC converter. Make sure the specified range of input voltage is not exceeded, the minimum output load no less than 10% load. If the actual load is less than the specified minimum load, the output ripple m ay 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, or contact our company for other lower output power products. RECOMMENDED CIRCUIT Vin Cin +Vout DC DC 0V -Vout GND Single Output Vin Ci n +Vout DC DC 0V GND Recommended Circuit All the WRA_LT-2W & WRB_LT-2W Series have been tested according to the following recommended testing circuit before leaving factory. This series should be tested under load. (See Figure 1). If you want to further decrease the input/output ripple, you can increase capacitance properly or choose capacitors with low ESR. 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 (Table 1). General: Cin: 12V 100F 24V&48V 10F~47F Cout: 10F/100mA (Figure 1) Input Current(A) Ip Input Voltage Range Input Voltage (V) (Figure 2) Input Current When it is used in unregulated power supply, be sure that the fluctuating range of the power supply and the rippled voltage do not exceed the module standard. Input current of power supply should afford the flash startup current of this kind of DC/DC module. (Figure 2) General: Ip 1.4*Iin-max: Output External Capacitor Table(Table 1) Single Vout Cout Dual Vout Cout (VDC) (uF) (VDC) (uF) 3.3 2200 5 680 5 1000 9 470 9 680 12 330 12 470 15 220 15 330 - No parallel connection or plug and play The copyright and authority for the interpretation of the products are reserved by Mornsun Specifications subject to change without notice. WRA_LT_2W & WRB_LT_2W A/2-2009 Page 2 of 3 OUTLINE DIMENSIONS & PIN CONNECTIONS MECHANICAL DIMENSIONS 7.5 0[0.29 5] 8.00[0.315] RECOMMENDED FOOTPRINT DUAL/SINGLE OUTPUT 2.54[0.100] 1 .0 0[0.03 9] 8 .80[ 0.3 46] (Sid e View) 1.02 [0.040 ] 0.50 [0 .020] 1 7.22 [0.67 8] 16 10 9 3 .04[0.12 0] 16 15.2 4[0.600 ] 10 9 (Top Vie w) 1 78 2 .5 4[0.10 0] 1 13 .70[0.539 ] 18.60[0.732] 78 2.54[0 .1 00] 0.25 [0.010 ] 5 TUBE DUTLINE DIMENSIONS 20 .7 0[0.81 5] 13 .8 0[0.54 3] 1 4.4 0[0.5 67] 1 .4 0[0.05 5] FOOTPRINT DETAILS Pin 1 7 8 9 10 Single GND NC NC +Vo 0V Vin Dual GND NC 0V +Vo -Vo Vin 0.60[0.0 24] 11.30[0.445] Note: Unit:m m [inch] Pin section tolerances:0.10mm [0.004inch] General tolerances:0.25m m [0.010inch] 1 0.00[0 .394] Note: Unit :mm[inch] General tolerances: 0.50mm[0.020inch] L=530mm[20.866inch] Tube Quantity: 21pcs L=220mm[8.661inch] Tube Quantity: 8pcs 16 NC: No connection Note: 1. The load shouldn't be less than 10%, otherwise ripple will increase dramatically. 2. Operation under 10% load will not dam age the converter; However, they may not meet all specification listed. 3. All specifications measured at Ta=25C, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 4. In this datasheet, all the test methods of indications are based on corporate standards. 5. Only typical models listed, other models may be different, please contact our technical person for more details. The copyright and authority for the interpretation of the products are reserved by Mornsun Specifications subject to change without notice. WRA_LT_2W & WRB_LT_2W A/2-2009 Page 3 of 3 2 .10 [0 .083 ] 23.86 [0.939 ] |
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