PWA_LT-1W5 & PWB_LT-1W5 Series 1.5W, WIDE INPUT ISOLATED & REGULATED SINGLE/DUAL OUTPUT DC/DC CONVERTER MINIATURE SMD PACKAGE multi-country patent protection RoHS FEATURES PRODUCT PROGRAM Wide (4:1) Input Range Short Circuit Protection(automatic recovery) 1500VDC Isolation Operating Temperature: -40°C to +85°C No Heat Sink Required No external component required MTBF>1,000,000 hours RoHS Compliance Input Part Number Output Voltage (VDC) Efficiency (%, Typ) Current (mA) Voltage (VDC) Max Min PWA2405LT-1W5 ±5 ±150 ±15 74 PWA2412LT-1W5* ±12 ±63 ±6 78 PWA2415LT-1W5* ±15 ±50 ±5 80 PWB2403LT-1W5* 3.3 455 45 72 PWB2405LT-1W5* 5 300 30 76 PWB2409LT-1W5* 9 167 17 78 PWB2412LT-1W5* PWB2415LT-1W5* 12 15 125 100 12 10 79 80 Nominal 24 Range Max** 9.0-36 40 PWA4805LT-1W5* ±5 ±150 ±15 74 The PWA_LT-1W5 & PWB_LT-1W5 Series are PWA4812LT-1W5* ±12 ±63 ±6 76 specially designed for applications where a wide PWA4815LT-1W5* ±15 ±50 ±5 78 range input voltage power supplies are isolated PWB4803LT-1W5* 3.3 455 45 72 from the input power supply in a distributed PWB4805LT-1W5* 5 300 30 76 power supply system on a circuit board. PWB4809LT-1W5* 9 167 17 78 These products apply to: PWB4812LT-1W5* 12 125 12 79 1) Where the voltage of the input power supply is PWB4815LT-1W5* 15 100 10 80 APPLICATIONS wide range(voltage range≤4:1); 2) Where isolation is necessary between input and output (Isolation Voltage ≤1500 VDC); 48 18-72 80 *Designing. **Input voltage can’t exceed this value, or will cause the permanent damage. Note: The load shouldn't be less than 10%, otherwise ripple will increase dramatically. Operation under 10% load will not damage the converter; However, they may not meet all specification listed. 3) Where the regulation of the output voltage and the output ripple noise are demanded. MODEL SELECTION PWA2405LT-1W5 Rated Power Package Style Output Voltage Input Voltage Product Series 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 MORNSUN reserves the copyright ISOLATION SPECIFICATIONS Item Test Conditions Min Isolation voltage Tested for 1 minute and 1mA max 1500 Isolation resistance Test at 500VDC 1000 Isolation Capacitance Input/Output Typ Max Units VDC MΩ 85 pF OUTPUT SPECIFICATIONS Item Test conditions Min Output Power See above products program 0.15 Positive voltage accuracy Refer to recommended circuit Typ ±1 Max Units 1.5 W ±3 ±3 ±5 Load Regulation From 10% to 100% load ±0.5 ±1.5* Line Regulation Input voltage from low to high ±0.2 ±0.75 Temperature Drift (Vout) Refer to recommended circuit Output ripple& Noise** 20MHz Bandwidth 35 Switching Frequency 100% load, nominal input voltage 300 Negative voltage accuracy Refer to recommended circuit % 0.03 %/°C 75 mVp-p KHz *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. Note: 1. All specifications measured at TA=25°C, humidity<75%, nominal input voltage and rated output load unless Otherwise specified. 2. See below recommended circuits for more details. Specifications subject to change without notice. PWA_LT_1W5 & PWB_LT_1W5 A/2-2008 Page 1 of 2 COMMON SPECIFICATIONS Max Units Recommended Circuit All the PWA_LT-1W5 & PWB_LT-1W5 Series Storage humidity range 95 % have been tested according to the following Operating Temp. range -40 85 -55 125 Item Test conditions Min Storage Temp. range Typ Temp. rise at full load Lead temperature recommended testing circuit before leaving °C 15 1.5mm from case for 10 seconds factory. This series should be tested under load. (see Figure 1). 245 Short circuit protection Continuous, automatics recovery Cooling Case Material Cin Plastic(UL94-V0) MTBF 1000 Weight DC DC GND K hours g 5.2 +Vout Vin Free air convection Single Output Vin +Vout Cin DC DC 0V GND TYPICAL TEMPERATURE CUTVE 0V -Vout （Figure 1） Temperature Derating Graph If you want to further decrease the input/output ripple, you can increase capacitance properly or choose capacitors with low ESR. However, the Safe Operating Area 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 Operating Temp.( C ) capacitor sees (Table 1). General: RECOMMENDED REFLOW SOLDERING PROFILE Cin: R e com m ended R e flo w Pro fil e 50 Sec M ax ( >22 0℃) P eak.Te m p 235~ 2 45℃ 250 Tem pe ra tu re (℃ ) 100 50 0 Tim e (s ec.) OUTLINE AND SOLDER PAD DIMENSIONS 8. 2 [ 0.3 2] 0 .50 [0 .020 7. 5 [ 0.3 ] Input Current When it is used in unregulated power supply, 15. 25[ 0.6 ] Side Vie w 10μF-47μF 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 - 90 S ec M ax ( >1 90℃) 23. 86 [ 0. 94] 100μF Cout: 10μF/100mA 200 150 12V 24V&48V 1.4 [0 .05 5] 0.15 be sure that the fluctuating range of the power 0. 15 supply and the rippled voltage do not exceed the module standard. Input current of power supply 1 3.1 [ 0.5 2] should afford the flash startup current of this kind 17 .78 [0. 7] of DC/DC module (Figure 2) 0.5 [0 .02 ] 1.0 2 [0. 04] 13. 7 [0. 54] 3.04 [ 0.1 2] 7 15. 24 [ 0.6 0] 2. 0 [0. 08] Top View 1 Pin Sing le D ual 1 GN D GND 7 NC NC 9 18. 5 [0.73 ] 10 16 0. 8 [ 0.0 3] 8 2.5 4 [0. 10] 15 .2 [0 .60 ] 2.5 4 [ 0. 10] 8 NC 0V 9 +Vo +Vo 10 0V -Vo 16 Vin Vin Input Current(A) General: Ip ≤1.4*Iin-max: Pin Con ne ctio ns Ip Input Voltage Range Input Voltage (V) Note: Unit: mm[inch]; Tolerance: ±0.25mm; All Pins on a 2.54mm . APPLICATION NOTE Requirement On Output Load In order to ensure the product operate efficiently and reliably, in addition to a max load No parallel connection or plug and play. (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. MORNSUN reserves the copyright Specifications subject to change without notice. PWA_LT_1W5 & PWB_LT_1W5 A/2-2008 Page 2 of 2