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 PRODUCT PROGRAM Small Footprint 1KVDC Isolation SIP Package Internal SMD Construction Temperature Range: -40°C to +85°C No Heat sink Required No External Component Required Industry Standard Pinout RoHS Compliance Input Part Number Output Voltage (VDC) Efficiency (%, Typ) Voltage (VDC) Current (mA) 3.3 75.8 5 50 65 ±5 ±25 62 A0509S- W25* ±9 ±13.8 64 A0512S- W25 ±12 ±10.4 66 A0515S- W25 ±15 ±8.3 65 Nominal B0303LS-W25* B0305LS-W25 3.3 Nominal 3.0-3.6 A0505S- W25 5 B0505LS- W25 4.5-5.5 Max 62 5 50 64 B0509 LS- W25* 9 27.8 65 B0512 LS- W25 12 20.8 67 B0515 LS- W25 15 16.7 65 The A_S-W25 & B_LS-W25 Series are specially A1205S- W25* ±5 ±25 62 designed for applications where a group of polar A1209S- W25* ±9 ±13.8 63 power supplies are isolated from the input power A1212S- W25* ±12 ±10.4 64 supply in a distributed power supply system on a A1215S- W25* ±15 ±8.3 65 circuit board. B1203 LS- W25* 3.3 75.8 62 These products apply to: B1205 LS- W25 5 50 65 1) B1209 LS- W25* 9 27.8 66 supply is fixed (voltage variation ≤ ±10%); B1212 LS- W25 12 20.8 67 2) B1215 LS- W25* 15 16.7 66 A2405S- W25 ±5 ±25 63 A2409S- W25* ±9 ±13.8 64 A2412S- W25* ±12 ±10.4 65 A2415S- W25* ±15 ±8.3 65 APPLICATIONS Where the voltage of the input power Where isolation is necessary between input and output (isolation voltage ≤1000VDC); 3) Where the regulation of the output voltage 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 B2405 LS- W25 12 24 10.8-13.2 21.6-26.4 5 50 63 B2409 LS- W25* 9 27.8 63 B2412 LS- W25* 12 20.8 65 B2415 LS- W25* 15 16.7 65 B2424LS- W25* 24 10.4 64 *Designing. B0505LS-W25 Rated Power Package Sty le Ou tput Volta ge In put Voltage Product Se ries COMMON SPECIFICATIONS Item Test conditions Min Typ Storage humidity Operating Temperature -40 Storage Temperature -55 Address: 2th floor 6th building, Hangzhou Industrial District, Guangzhou, China Tel: 86-20-38601850 Fax: 86-20-38601272 http://www.mornsun-power.com % 125 15 1.5mm from case for 10 seconds °C 25 300 Short circuit protection* MORNSUN Science& Technology co.,Ltd. Units 95 85 Temp. rise at full load Lead temperature Max 1 Cooling s Free air convection Case material Plastic (UL94-V0) MTBF 3500 Weight K hours 2.1 g *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 APPLICATION NOTE Item Test conditions Min Isolation voltage Tested for 1 minute and 1 mA max 1000 Typ Max Units VDC Requirement on output load To ensure this module can operate efficiently Isolation resistance Test at 500VDC 1000 MΩ 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 OUTPUT SPECIFICATIONS Item Test conditions Min Typ Output power Line regulation For Vin change of ±1% 10% to 100% load Units 0.25 W (3.3V input) ±1.5 (Others input) ±1.2 (3.3V output) Load regulation Max 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 12 20 (5V output) 10.5 15 (9V output) 8.3 15 self-recovery fuse in series at the input end or add (12V output) 6.8 15 a circuit breaker to the circuit. 6.3 15 (15V output) Output voltage accuracy circuit of these products has no protection against % overload. The simplest method is to connect a See tolerance envelope graph Temperature drift 100% full load Ripple & Noise* 20MHz Bandwidth Switching frequency Full load, nominal input 50 Recommended circuit If you want to further decrease the input/output 0.03 %/°C ripple, an “LC” filtering network may be connected 75 mVp-p to the input and output ends of the DC/DC 100 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=25°C, 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%. TYPICAL CHARACTERISTICS converter, see (Figure 1). Dual O utput L L +Vo Vin Cout DC DC Cin 0V L Cout GND -Vo Single Output L Vin L +Vo DC DC Cin Cout GND 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 o Operating Temp.( C) OUTLINE DIMENSIONS & PIN CONNECTIONS 2.10 (0.083) RECOMMENDED FOOTPRINT Top view,grid:2.54*2.54mm(0.1 *0 .1inch), diameter :1.0 0mm(0 .039inch) (0.236) (0.035) First Angle Projection 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 Dual Output 2.54 (0.100) overheat protection that is connected to the input or output end in series (Figure 2). 1 2 4 5 6 Dual O ut put 1 2 4 Vin 6 REG REG +Vout REG - Vout REG +Vout DC DC GND 4.10 (0.374) S ing le Output 0V Single O utput 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) MORNSUN reserves the copyright Pin 1 2 4 5 6 Single Vin GND 0V No Pin +Vo Dua l Vin GND -Vo 0V +Vo Specifications subject to change without notice. Vin REG GND DC DC 0V (Figure 2) No parallel connection or plug and play. A_S-W25 & B_LS-W25 A/2-2008 Page 2 of 2