A-XS-W25&B-XLS-W25 Series 0.25W, FIXED INPUT, ISOLATED&UNREGULATED DUAL/SINGLE OUTPUT DC-DC CONVERTER PRODUCT PROGRAM Input Part Number B0303XLS-W25 FEATURES Small Footprint ◆ 1KVDC Isolation Output Voltage (VDC) Nominal Nominal 3.3 3.0-3.6 Voltage (VDC) Current (mA) Efficiency (%, Typ) Max 3.3 75.8 62 B0305XLS-W25 5 50 65 A0505XS-W25 ±5 ±25 62 A0509XS-W25 ±9 ±13.8 64 A0512XS-W25 ±12 ±10.4 66 A0515XS-W25 ±15 ±8.3 65 ◆ SIP Package ◆ Internal SMD Construction ◆ Temperature Range: -40℃to +85℃ ◆ 5 4.5-5.5 B0505XLS-W25 5 50 64 B0509XLS-W25 9 27.8 65 B0512XLS-W25 12 20.8 67 No Heat sink Required B0515XLS-W25 15 16.7 65 No External Component Required A1205XS-W25 ±5 ±25 62 A1209XS-W25 ±9 ±13.8 63 A1212XS-W25 ±12 ±10.4 64 A1215XS-W25 ±15 ±8.3 65 3.3 75.8 62 ◆ ◆ Industry Standard Pin out ◆ MODEL SELECTION B1203XLS-W25 ① ② ③ ④ ⑤ ⑥ B 05 05 X LS -W25 ①Product Series ③Output Voltage ⑤Lengthened SIP Package ②Input Voltage ④Fixed Input ⑥Rated Power APPLICATIONS The A-XS-W25&B-XLS-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 B1205XLS-W25 5 50 65 B1209XLS-W25 9 27.8 66 B1212XLS-W25 12 20.8 67 B1215XLS-W25 15 16.7 66 A2405XS-W25 ±5 ±25 63 A2409XS-W25 ±9 ±13.8 64 A2412XS-W25 ±12 ±10.4 65 ±15 ±8.3 65 5 50 63 B2409XLS-W25 9 27.8 63 B2412XLS-W25 12 20.8 65 B2415XLS-W25 15 16.7 65 B2424XLS-W25 24 10.4 64 A2415XS-W25 B2405XLS-W25 24 21.6-26.4 COMMON SPECIFICATIONS Item Test conditions Min Typ Storage humidity Units 95 % Operating Temperature -40 85 Storage Temperature -55 125 Temp. rise at full load Lead temperature 15 1.5mm from case for 10 seconds 1 Cooling s Free air convection Case material MTBF ℃ 25 300 Short circuit protection* MICRODC RESERVES THE COPYRIGHT Max Plastic (UL94-V0) 3500 Weight K hours 2.1 g *Supply voltage must be discontinued at the end of short circuit duration. http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 1 of 2 A-XS-W25&B-XLS-W25 Series ISOLATION SPECIFICATIONS Item APPLICATION NOTE Test conditions Min Isolation voltage Tested for 1 minute and 1 mA max 1000 Typ Max Units VDC Isolation resistance Test at 500VDC 1000 MΩ 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 load! If the actual output power is very small, please connect OUTPUT SPECIFICATIONS Item a resistor with proper resistance at the output end in Test conditions Min Typ Output power Line regulation Max Units 0.25 W parallel to increase the load. Overload Protection For Vin change (3.3V input) ±1.5 Under normal operating conditions, the output of ±1% (Others input) ±1.2 circuit of these products has no protection against overload. The simplest method is to connect a (3.3V output) 10% to 100% Load regulation 12 20 (5V output) 10.5 15 (9V output) 8.3 15 (12V output) 6.8 15 (15V output) 6.3 15 self-recovery fuse in series at the input end or add a % load Output voltage accuracy 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 tolerance envelope graph Temperature drift 100% full load Ripple & Noise* 20MHz Bandwidth 50 Switching frequency Full load, nominal input 100 circuit breaker to the circuit. 0.03 %/℃ 75 mVp-p see (Figure 1). KHz *Test ripple and noise by "parallel cable" method. See detailed operation instructions at Testing . Note: 1. All specifications measured at T A =25℃, 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 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 arise. It's not recommended to connect any external capacitor in the application field. Output Voltage Regulation and Over-voltage Protection Circuit OUTLINE DIMENSIONS & PIN CONNECTIONS 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). No parallel connection or plug and play. http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 2 of 2