PWA_LT-1W5 & PWB_LT-1W5 Series 1.5W, WIDE INPUT ISOLATED & REGULATED SINGLE/DUAL OUTPUT DC/DC CONVERTER MINIATURE SMD PACKAGE Patent Protection RoHS PRODUCT PROGRAM FEATURES ● SMD package ● 4:1 wide input voltage range ● Short circuit protection(automatic recovery) ● 1500VDC isolation ● Operating temperature: -40°C ~ +85°C ● No heatsink required ● No external component required ● MTBF>1,000,000 hours ● RoHS Compliance APPLICATIONS The PWA_LT-1W5 & PWB_LT-1W5 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 ≤4:1); 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. 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 77 PWA2415LT-1W5 ±15 ±50 ±5 75 PWB2403LT-1W5 3.3 500 50 71 5 300 30 76 PWB2409LT-1W5 9 167 17 76 PWB2412LT-1W5 12 125 12 79 PWB2415LT-1W5 15 100 10 80 PWA4805LT-1W5 ±5 ±150 ±15 74 PWA4812LT-1W5 ±12 ±63 ±6 76 PWA4815LT-1W5 ±15 ±50 ±5 76 Nominal PWB2405LT-1W5 PWB4803LT-1W5 24 Range 9.0-36 Max** 40 3.3 500 50 72 PWB4805LT-1W5 5 300 30 75 PWB4809LT-1W5 9 167 17 78 PWB4812LT-1W5 12 125 12 77 PWB4815LT-1W5 15 100 10 77 48 18-72 80 **Input voltage can’t exceed this value, or will cause the permanent damage. MODEL SELECTION COMMON SPECIFICATIONS PWA2405LT-1W5 Rated Power Package Style Outp ut Voltage Input Voltage Item Max. Units Storage humidity Product Series Test Conditions Min. 95 % Operating Temperature -40 85 Storage Temp. range -55 Temp. rise at full load Lead temperature 1.5mm from case for 10 seconds Address: No. 5, Kehui St. 1, Kehui development center, Science Ave., Guangzhou Science City, Luogang district, Guangzhou,P.R.China. Tel: 86-20-28203030 Fax:86-20-28203068 MTBF °C 300 Continuous, automatics recovery Cooling Case Material 125 15 Short circuit protection MORNSUN Science & Technology Co.,Ltd. Typ. Weight Free air convection Epoxy Resin (UL94-V0) 1000 k hours 5.2 g Http://www.mornsun-power.com The copyright and authority for the interpretation of the products are reserved by MORNSUN Specifications subject to change without notice. PWA_LT-1W5 & PWB_LT-1W5 B/3-2010 Page 1 of 3 ISOLATION SPECIFICATIONS TYPICAL TEMPERATURE CURVE Item Test conditions Isolation voltage Tested for 1 minute and 1mA max 1500 Min. Isolation resistance Test at 500VDC Isolation capacitance Input/Output, 100KHz/1V Typ. Max. Units Temperature Derating Graph VDC 1000 MΩ 1000 pF Safe Operating Area OUTPUT SPECIFICATIONS Item Test conditions Min. Output power Refer to products program 0.15 Typ. Max. Units 1.5 Positive voltage accuracy Refer to recommended circuit ±1 ±3 W Negative voltage accuracy Refer to recommended circuit ±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 Operating Temp.( C ) % 250 ±0.03 %/°C 20MHz Bandwidth 35 Switching Frequency 100% load, input voltage range 550 100 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. 220 C 200 Temperatur e ( C) Output ripple & noise** Pe ak . Temp 240 C 10 Sec M ax 60 Sec Max (>220 C) 150 100 50 0 Ti me (s ec.) Remark: The curve applies only to the hot air reflow soldering APPLICATION NOTE RECOMMENDED CIRCUIT 1) 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 Cin DC DC 0V GND -Vo Single Output Vin output power is very small, please add an appropriate resistor as extra loading, or contact our company for other lower output power products. +Vo Vin Ci n +Vo DC DC 0V GND （Figure 1） 2) Recommended Circuit All the PWA_LT-1W5 & PWB_LT-1W5 series have been tested according to the following recommended testing circuit before leaving factory. This series should be tested under load (see Figure 1). Output External Capacitor Table (Table 1) Dual Vout (VDC) Cout (µF) 2200 ±5 680 680 ±12 330 5 1000 ±15 220 Cin: 10μF~47μF 12 470 - - Cout: 10μF/100mA 15 330 - 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 maximum capacitance of its filter capacitor sees (Table 1). General: Single Vout (VDC) Cout (µF) 3.3 9 3) 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 m odule standard. Input current of power supply should afford the flash startup current of this kind of DC/DC module (Figure 2) General: Ip ≤1.6*Iin-max 4) 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. PWA_LT-1W5 & PWB_LT-1W5 B/3-2010 Page 2 of 3 OUTLINE DIMENSIONS & PIN CONNECTIONS MECHANICAL DIMENSIONS RECOMMENDED FOOTPRINT(TOP VIEW) DUAL/SINGLE OUTPUT (Top View) 1 7 8 A A 1 0.25[0.010] 2.54[0.100] 5 max S ingle GND Dual GND 7 8 NC NC NC 9 +Vo 0V +Vo 10 0V -Vo 16 Vin Vin 11.30 [0.4 45] 1 1.00[0.039] 22.20[0.874] 13.80[0.543] F OOTP RINT DE TA I LS P in 8 TUBE OUTLINE DIMENSIONS 1.40±0.20 [0.055±0.008] 18.10 [0.713] 7 8.80[0.346] 10 9 18 .10 [0 .713 ] 16 2.54[0.100] 1 3.70 [0.53 9] 15.24[0.600] 10 9 0.60[0.024] NC: No connection Note: Unit:m m [inch] P in section tolerances:±0.10mm [±0.004inch] Gener al tolerances:±0.25m m [±0.010inch] 1 4.40 [0.567] 23.86[0.939] 3.04[0.120] 16 2.10 [0.083] 0.50 [0.020] 17.22[0 .678 ] 1.02 [0.040] 2.5 4[0.1 00] 8.0 0 [0.315] 7 .50 [0.29 5] (Side View) 10.00[0.394] Note: Unit :mm[inch] General tolerances: ±0.50mm[±0.020inch] L=530mm[20.866inch] pcs/tube: 21 L=220mm[8.661inch] pcs/tube: 8 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. Capacitor MAX load tested at input voltage range and full load. 4. All specifications measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 5. Only typical models listed, other models may be different, please contact our technical person for more details. 6. In this datasheet, all the test methods of indications are based on corporate standards. The copyright and authority for the interpretation of the products are reserved by MORNSUN Specifications subject to change without notice. PWA_LT-1W5 & PWB_LT-1W5 B/3-2010 Page 3 of 3