WRB4812LT-3W

WRA_LT-3W & WRB_LT-3W Series 3W, WIDE INPUT, ISOLATED & REGULATED SINGLE/DUAL OUTPUT DC/DC CONVERTER m ulti-country patent protection RoHS FEATURES W ide (2:1) input range Operating temperature: -40°C ~ +85°C 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 I nput Part Number W RA1205LT-3W * W RA1212LT-3W * W RA1215LT-3W * W RB1203LT-3W * W RB1205LT-3W * W RB1212LT-3W * W RB1215LT-3W * W RA2405LT-3W 12 9-18 22 Voltage (VDC) Nominal Range Max.** Voltage (VDC) ±5 ±12 ±15 3.3 5 12 15 ±5 ±12 ±15 24 18-36 40 3.3 5 12 15 ±5 ±12 ±15 48 36-72 80 3.3 5 12 15 Output Current (mA) M ax. ±300 ±125 ±100 833 600 250 200 ±300 ±125 ±100 833 600 250 200 ±300 ±125 ±100 833 600 250 200 Min. ±30 ±13 ±10 83 60 25 20 ±30 ±13 ±10 83 60 25 20 ±30 ±13 ±10 83 60 25 20 76 80 80 72 74 78 80 76 80 80 74 76 80 80 76 80 80 74 76 80 80 Efficiency (%, Typ.) APPLICATIONS The WRA_LT-3W & WRB_LT-3W 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 dem anded. W RA2412LT-3W * W RA2415LT-3W * W RB2403LT-3W * W RB2405LT-3W * W RB2412LT-3W * W RB2415LT-3W * W RA4805LT-3W * W RA4812LT-3W * W RA4815LT-3W * W RB4803LT-3W * W RB4805LT-3W * W RB4812LT-3W * W RB4815LT-3W * *Designing. **Input voltage can’t exceed this value, or will cause the permanent damage. MODEL SELECTION WRB2412LT-3W Rated Power Package Style O utput Voltage Input Voltage Product Series COMMON SPECIFICATIONS Item Storage humidity range Operating temperature Storage temperature Temp. rise at full load Lead temperature Short circuit protection Cooling 1.5mm from case for 10 seconds -40 -55 15 245 Continous, autom atic 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 P ackage material MTBF W eight T he copyright and authority for the interpretation of the products are reserved by Mornsun Specifications subject to change without notice. W RA_LT_3W & WRB_LT_3W A/2-2009 Page 1 of 3 ISOLATION SPECIFICATIONS Item Isolation voltage Isolation resistance Isolation Capacitance Test conditions Test at 500VDC Input/Output Min. 1000 85 Typ. Max. Units VDC MΩ pF Tested for 1 minute and 1mA max. 1500 TYPICAL TEMPERATURE CUTVE OUTPUT SPECIFICATIONS Item O utput power P ositive voltage accuracy Load regulation Line regulation Temperature Drift (Vout) O utput ripple& noise** Switching frequency Test conditions See above products program Refer to recommended circuit From 10% to 100% load Input voltage from low to high Refer to recommended circuit 20MHz Bandwidth 100% load, nominal input voltage 35 300 Min. 0.3 ±1 ±3 ±0.5 ±0.2 Typ. Max. 3 ±3 ±5 ±1* ±0.5 ±0.03 75 % /°C 200 Units W Operating Temp.( C ) 100 Negative voltage accuracy Refer to recommended circuit % 250 R ecommended Reflow P rofile 50 S ec M ax (>220 ℃) Peak.Tem p 235~ 245℃ 220℃ 190℃ 90 Sec M ax (>190 ℃) KHz Te m p e r a t u r e (℃) mVp-p 150 *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. 100 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 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, 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-3W & WRB_LT-3W 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 100μF 24V&48V 10μF~47μ F Cout: 10μF/100mA (Figure 1) Input Curre nt(A) Ip Input Voltage Range Input Voltage (V) (Figure 2) Input Current W hen 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: I p ≤1.4*Iin-max: Output External Capacitor Table(Table 1) Single Vout Cout Cout Dual Vout (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 T he copyright and authority for the interpretation of the products are reserved by Mornsun Specifications subject to change without notice. W RA_LT_3W & WRB_LT_3W A/2-2009 Page 2 of 3 OUTLINE AND SOLDER PAD DIMENSIONS MECHANICAL DIMENSIONS 7. 5 0[ 0. 29 5] 8. 0 0[ 0. 31 5] RECOMMENDED FOOTPRINT DUAL/SINGLE OUTPUT 2 . 54 [0 .1 00 ] 1.00[0.039] 8 . 80 [ 0. 3 46 ] (Side View) 1.02[0.040] 0.50[0.020] 1 7. 22 [ 0. 67 8] 16 10 9 3.04[0.120] 16 15.24[0.600] 10 9 (Top View) 1 78 2.54[0.100] 1 1 3 .7 0[ 0. 5 39 ] 1 8. 60 [0 . 73 2] 78 2.54[0.100] 0.25[0.010] 5° TUBE DUTLINE DIMENSIONS 20.70[0.815] 13.80[0.543] 1 4 .4 0[ 0. 5 67 ] 1.40[0.055] FOOTPRINT DETAILS Pin Single Dual GND GND 1 NC NC 7 NC 8 0V +Vo +Vo 9 10 0V -Vo 16 Vin Vin NC: No connection 0.60[0.024] 11 . 30 [0 .4 45 ] Note: Unit:m m[inch] Pin section tolerances: ±0.10mm[ ±0.004inch] General tolerances: ± 0.25mm [± 0.010inch] 10.00[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 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=25°C, humidity