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| A_D-W25 & B_LD-W25 Series 0.25W, FIXED INPUT, ISOLATED & UNREGULATED DUAL/SINGLE OUTPUT DC-DC CONVERTER multi-country patent protection RoHS FEATURES 1KVDC Isolation DIP 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 B0303LD-W25* B0305LD-W25* A0505D- W25 A0509D- W25* A0512D- W25* A0515D- W25* B0505LD- W25 B0509 LD- W25* B0512 LD- W25 B0515 LD- W25 A1205D- W25* A1209D- W25* A1212D- W25* A1215D- W25* B1203 LD- W25* B1205 LD- W25 B1209 LD- W25* B1212 LD- W25 B1215 LD- W25* A2405D- W25* A2409D- W25* A2412D- W25* A2415D- W25* B2405 LD- W25 B2409 LD- W25* B2412 LD- W25* B2415 LD- W25* B2424LD- W25* *Designing Output Range 3.0-3.6 Voltage (VDC) 3.3 5 5 9 12 15 5 9 12 15 5 9 12 15 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) Voltage (VDC) Nominal 3.3 5 4.5-5.5 APPLICATIONS The A_D-W25 & B_LD-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) Where the voltage of the input power supply is fixed (voltage variation 10%); 2) 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. 12 10.8-13.2 3.3 5 9 12 15 5 9 12 15 24 21.6-26.4 5 9 12 15 24 MODEL SELECTION B0505 LD -W25 Rated Pow er Pack age S ty le O utpu t Volt age Input Volta ge Produ ct Se ries COMMON SPECIFICATIONS Item Operating Temp. Range Storage Temp. Range Storage humidity range Cooling Test conditions Min -40 -55 Typ Max 85 125 95 Free air convection 15 1.5mm from case for 10 seconds 25 300 1 Plastic (UL94-V0) 3500 2.1 K hours g C s Units C % 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 Temp. rise at full load Lead temperature Short circuit protection* 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_D-W 25 & B_LD-W25 A/1-2008 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 Min Typ Max 0.25 1.5 1.2 12 10.5 8.3 6.8 6.3 20 15 10 10 10 0.03 50 100 75 %/C mVp-p KHz 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). D u al O utpu t L Vin Cin GND Sin g le O utpu t L Vin Cin GND OUTPUT SPECIFICATIONS Item Output power Line regulation For Vin change of 1% (3.3output) (others output) (3.3 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 Test conditions Units W this product should never be operated under no 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. See tolerance envelope graph *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.Dual output models unbalanced load: 5%. L +Vo Cout TYPICAL CHARACTERISTICS DC DC L Cout 0V -Vo L +Vo DC DC (Figure 1) Cout 0V It should also be noted that the inductance and the frequency of the "LC" filtering network should Operating Temp.( C) o 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 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 overheat protection that is connected to the input or output end in series (Figure 2). OUTLINE DIMENSIONS & PIN CONNECTIONS Fi rst A ngle P ro jecti on 20.00(0.787) (0.276) 7.00 (Side View) RECOMMENDED FOOTPRINT Top view, grid: 2.54*2. 54mm(0. 1*0.1inch) diameter:1.00 (0. 039)mm Single Output 14 11 98 7 4.10 (0. 161) 15.24(0.600) 1 14 7 1 10. 00 (0.394) 7.62 (0.300) (Bottom View) 11 98 Dual Output 11 Du a l O u tput Vi n R EG REG +Vout 0V 14 FOOTPRINT DETAILS Single Pin Dual 1 GND GND 7 NC NC 0V 8 0V +Vo +Vo 9 11 No Pin -Vo 14 Vin Vin 1 98 GN D DC DC REG 7 Sing le Ou tp ut Vi n R EG -Vo ut REG +Vout Note: Unit:mm(inch) Pin section:0.50*0.30mm(0.020*0.012inch) Pin tolerances: 0.10mm( 0.004inch) General tolerances: 0.25mm( 0.010inch) GN D DC DC 0V (Figure 2) No parallel connection or plug and play. MORNSUN reserves the copyright Specifications subject to change without notice. A_D-W25 & B_LD-W25 A/1-2008 Page 2 of 2 |
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