A_LT-2W & B_LT-2W Series 2W, FIXED INPUT, ISOLATED & UNREGULATED, DUAL/SINGLE OUTPUT, SMD, DC-DC CONVERTER FEATURES multi-country patent protection RoHS PRODUCT PROGRAM High Efficiency up to 85% SMD Package 1KVDC Isolation Temperature Range: -40°C to +85°C Internal SMD Construction No Heat sink Required No External Component Required Industry Standard Pinout RoHS Compliance Input Part Number Efficiency (%, Typ) Current (mA) Voltage (VDC) Max Min A0505LT-2W ±5 ±200 ±20 82 A0509LT-2W ±9 ±111 ±11 83 A0512LT-2W ±12 ±83 ±8 84 A0515LT-2W ±15 ±67 ±7 82 5 400 40 80 B0509LT-2W 9 222 23 82 B0512LT-2W 12 167 17 84 B0515LT-2W 15 133 14 84 A1205LT-2W ±5 ±200 ±20 A1209LT-2W ±9 ±111 ±11 83 84 Nominal B0505LT-2W APPLICATIONS Output Voltage (VDC) 5 Range 4.5-5.5 are A1212LT-2W ±12 ±83 ±8 84 specially designed for applications where a A1215LT-2W ±15 ±67 ±7 85 group of polar power supplies are isolated from B1205LT-2W 5 400 40 82 the input power supply in a distributed power B1209LT-2W 9 222 23 83 B1212LT-2W 12 167 17 85 B1215LT-2W 15 133 14 85 The A_LT-2W & B_LT-2W Series 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 12 OUTPUT SPECIFICATIONS Item Test Conditions frequency analog circuits, and IGBT power Min Output power Line regulation Load regulation 12.8 15 10% to 100% load (9V output) 8.3 15 10% to 100% load (12V output) 6.8 15 6.3 15 10% to 100% load (15V output) MORNSUN Science& Technology co.,Ltd. W % See tolerance envelope graph Temperature drift 100% full load Ripple & Noise* 20MHz Bandwidth 75 Switching frequency Full load, nominal input 70 0.03 %/°C 150 mVp-p KHz *Test ripple and noise by “parallel cable” method. See detailed operation instructions at Testing of Power Converter Section, application notes. COMMON SPECIFICATION Item Test Conditions Min Typ Storage humidity Operating temperature -40 Storage temperature -55 Lead temperature Address: 2th floor 6th building, Hangzhou Industrial District, Guangzhou, China Tel: 86-20-38601850 Fax: 86-20-38601272 http://www.mornsun-power.com Units ±1.2 10% to 100% load (5V output) Output voltage accuracy Rated Power Package Style Output Vol tage Input Voltage Product Series Max 2 For Vin change of 1% device driving circuits. MODEL SELECTION A0505LT-2W Typ 0.2 demanding. Such as: purely digital circuits, ordinary low 10.8-13.2 Temp. rise at full load Units 95 % 85 125 15 1.5mm from case for 10 seconds °C 25 260 Cooling Free air convection Short circuit protection* 1 Case material MTBF Max s Plastic(UL94-V0) 3500 Weight K hours 2.1 g *Supply voltage must be discontinued at the end of short circuit duration. 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. MORNSUN reserves the copyright Specifications subject to change without notice. A_LT-2W & B_LT-2W A/1-2008 Page 1 of 2 ISOLATION CHARACTERISTICS Item Test Conditions Min Isolation voltage Tested for 1 minute and 1mA max 1000 VDC 1000 MΩ Isolation resistance Test at 500VDC Typ Max Units Overload Protection Under norm al 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. TYPICAL CHARACTERISTICS Recommended testing and application 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 Out put L L +Vo Vin P eak.Temp 260 C 10 S ec Max 220 C 0V -Vo Singl e Output RECOMMENDED REFLOW SOLDERING PROFILE Temperature ( C ) L Cout GND Operating Temp.(oC) 200 +Vo Cout DC DC Cin 250 L L Vin Cout DC DC Cin GND 0V (Figure 1) 150 It should also be noted that the inductance and the 90 S ec M ax ( > 220 C ) 100 frequency of the “LC” filtering network should be staggered with the DC/DC frequency to avoid mutual interference. However, the capacitance of the output 50 filter capacitor must be proper. If the capacitance is 0 too big, a startup problem might arise. For every Ti me (sec.) channel of output, provided the safe and reliable OUTLINE DIMENSIONS & PIN CONNECTIONS operation is ensured, the recommended capacitance 12.70(0.500) 17.78(0.700) 14 13 12 2.54 (0.100) EXTERNAL CAPACITOR TABLE (TABLE 1) 0.2 5 (0.010) 1.27 (0.050) of its filter capacitor sees (Table 1). A 2.75 (0.108) 6.00 (0.236) 5.75 (0.226) First Angle Projection RECOMMENDED FOOTPRINT Top view,grid:2.54*2.54mm(0.1*0.1inch) 10 9 8 Dual output & Single Output 1 2 3 5 6 7 2.00 (0.079) 14 13 12 10 9 8 Vin (VDC) Cin (uF) 5 4.7 Single Vout (VDC) 5 Cout (uF) 10 Dual Vout (VDC) ±5 Cout (uF) 12 2.2 9 4.7 ±9 - - 12 2.2 ±12 2.2 1 - - 15 1 ±15 0.47 4.7 It’s not recommended to connect any external capacitor in the application field with less than 0.5 watt output. 17.78 (0.700) 1 2 3 5 6 7 A 0.5 (0.020) 1.00 (0.039) 。 5.0 MAX 1.30 0.13 (0.052 0.005) Note: Unit:mm(inch) Pin section:0.60*0.25mm(0.024*0.010inch) Pin tolerances: 0.10mm( 0.004inch) General tolerances: 0.25mm( 0.010inch) FOOTPRINT DETAILS Singles Pin Duals 1 GND GND 2 Vin Vin 5 NC -Vo 6 0V 0V 7 +Vo +Vo 10 NC -Vo Others NC NC NC:No Connection APPLICATION NOTE 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). Du a l O u tp u t Vin REG REG +Vout REG -Vout REG +Vout DC DC GND 0V S in g l e O u tp u t Requirement on output load To ensure this module can operate efficiently and reliably, During operation, the minimum Vin REG DC DC GND 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 a resistor with proper resistance at the output end in parallel to increase the load, or use our company’s 0V (Figure 2) No parallel connection or plug and play. products with a lower rated output power (A_T -1W/B_T-1W series). MORNSUN reserves the copyright Specifications subject to change without notice. A_LT-2W & B_LT-2W A/1-2008 Page 2 of 2