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| A_S-W25 & B_LS-W25 Series 0.25W, FIXED INPUT, ISOLATED & UNREGULATED DUAL/SINGLE OUTPUT DC-DC CONVERTER multi-country patent protection RoHS FEATURES Small Footprint 1KVDC Isolation SIP Package Internal SMD Construction Temperature Range: -40C to +85C No Heat sink Required No External Component Required Industry Standard Pinout RoHS Compliance PRODUCT PROGRAM Input Part Number B0303LS-W25* B0305LS-W25 A0505S- W25 A0509S- W25* A0512S- W25 A0515S- W25 B0505LS- W25 B0509 LS- W25* B0512 LS- W25 B0515 LS- W25 A1205S- W25* A1209S- W25* A1212S- W25* A1215S- W25* B1203 LS- W25* B1205 LS- W25 B1209 LS- W25* B1212 LS- W25 B1215 LS- W25* A2405S- W25 A2409S- W25* A2412S- W25* A2415S- W25* B2405 LS- W25 B2409 LS- W25* B2412 LS- W25* B2415 LS- W25* B2424LS- W25* 24 21.6-26.4 12 10.8-13.2 5 4.5-5.5 Voltage (VDC) Nominal 3.3 Nominal 3.0-3.6 Voltage (VDC) 3.3 5 5 9 12 15 5 9 12 15 5 9 12 15 3.3 5 9 12 15 5 9 12 15 5 9 12 15 24 Output Current (mA) Max 75.8 50 25 13.8 10.4 8.3 50 27.8 20.8 16.7 25 13.8 10.4 8.3 75.8 50 27.8 20.8 16.7 25 13.8 10.4 8.3 50 27.8 20.8 16.7 10.4 62 65 62 64 66 65 64 65 67 65 62 63 64 65 62 65 66 67 66 63 64 65 65 63 63 65 65 64 Efficiency (%, Typ) APPLICATIONS The A_S-W25 & B_LS-W25 Series are specially designed for applications where a group of polar power supplies are isolated from the input power supply in a distributed power supply system on a circuit board. These products apply to: 1) 2) 3) Where the voltage of the input power Where isolation is necessary between input Where the regulation of the output voltage supply is fixed (voltage variation 10%); and output (isolation voltage 1000VDC); and the output ripple noise are not demanding. Such as: purely digital circuits, ordinary low frequency analog circuits, and IGBT power device driving circuits. MODEL SELECTION *Designing. B0505LS-W25 Rated Power Package Sty le Ou tput Volta ge In put Voltage Product Se ries COMMON SPECIFICATIONS Item Storage humidity Operating Temperature Storage Temperature Temp. rise at full load Lead temperature Short circuit protection* 1.5mm from case for 10 seconds -40 -55 15 Test conditions Min Typ Max 95 85 125 25 300 1 Free air convection Plastic (UL94-V0) 3500 2.1 K hours g s C Units % MORNSUN Science& Technology co.,Ltd. Address: 2th floor 6th building, Hangzhou Industrial District, Guangzhou, China Tel: 86-20-38601850 Fax: 86-20-38601272 http://www.mornsun-power.com Cooling Case material MTBF Weight *Supply voltage must be discontinued at the end of short circuit duration. MORNSUN reserves the copyright Specifications subject to change without notice. A_S-W25 & B_LS-W25 A/2-2008 Page 1 of 2 ISOLATION SPECIFICATIONS Item Isolation voltage Isolation resistance Test conditions Tested for 1 minute and 1 mA max Test at 500VDC Min 1000 1000 Typ Max Units VDC M APPLICATION NOTE Requirement on output load To ensure this module can operate efficiently and reliably, During operation, the minimum output load is not less than 10% of the full load, and that this product should never be operated under no Min Typ Max 0.25 Units W load! If the actual output power is very small, please connect a resistor with proper resistance at the output end in parallel to increase the load. Overload Protection Under normal operating conditions, the output circuit of these products has no protection against % overload. The simplest method is to connect a self-recovery fuse in series at the input end or add a circuit breaker to the circuit. Recommended circuit If you want to further decrease the input/output ripple, an "LC" filtering network may be connected to the input and output ends of the DC/DC converter, see (Figure 1). Dual O utput L Vin Cin GND Single Output L Vin Cin GND OUTPUT SPECIFICATIONS Item Output power Line regulation For Vin change of 1% (3.3V input) (Others input) (3.3V output) (5V output) Load regulation 10% to 100% load (9V output) (12V output) (15V output) Output voltage accuracy Temperature drift Ripple & Noise* Switching frequency 100% full load 20MHz Bandwidth Full load, nominal input 50 100 12 10.5 8.3 6.8 6.3 Test conditions 1.5 1.2 20 15 15 15 15 See tolerance envelope graph 0.03 75 %/C mVp-p KHz *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=25C, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 2. See below recommended circuits for more details. 3. Dual output models unbalanced load: 5%. L +Vo Cout DC DC L Cout 0V -Vo L +Vo TYPICAL CHARACTERISTICS DC DC Cout 0V (Figure 1) It should also be noted that the inductance and the frequency of the "LC" filtering network should be staggered with the DC/DC frequency to avoid mutual interference. However, the capacitance of the output filter capacitor must be proper. If the capacitance is too big, a startup problem might Operating Temp.( C) o arise. It's not recommended to connect any external capacitor in the application field. Output Voltage Regulation and Over-voltage Protection Circuit The simplest device for output voltage regulation, over-voltage and over-current protection is a linear voltage regulator with OUTLINE DIMENSIONS & PIN CONNECTIONS First Angle Projection (0.035) (0.236) RECOMMENDED FOOTPRINT Top view,grid:2.54*2.54mm(0.1 *0 .1inch), diameter :1.0 0mm(0 .039inch) Dual Output 12 456 overheat protection that is connected to the input or output end in series (Figure 2). Dual O ut put 2.10 (0.083) 2.54 (0.100) S ing le Output (0.374) Vin 6 REG REG +Vout 0V 12 4.10 4 GND Single O utput DC DC REG - Vout +Vout FOOTPR INT DE TA ILS (0.020) Note: Unit:mm(inch) P in section:0.50*0.30mm(0.020*0.012inch) P in section tolerances: 0.10mm( 0.004inch) Gener al tolerance s: 0.25mm( 0.0 10inch) Pin 1 2 4 5 6 Single Vin GND 0V No Pin +Vo Dua l Vin GND -Vo 0V +Vo Vin GND REG REG DC DC 0V (Figure 2) No parallel connection or plug and play. MORNSUN reserves the copyright Specifications subject to change without notice. A_S-W25 & B_LS-W25 A/2-2008 Page 2 of 2 |
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