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| H_LT-2W Series 2W, FIXED INPUT, ISOLATED & UNREGULATED SINGLE OUTPUT, SMD DC-DC CONVERTER multi-country patent protection FEATURES High Efficiency up to 80% SMD Package 6KVDC Isolation Temperature Range: -40C to +85C Internal SMD Construction No Heat sink Required No External Component Required Continuous short circuit protection Industry Standard Pinout RoHS Compliance RoHS PRODUCT PROGRAM Input Part Number H0505LT-2W H0512LT-2W* H0515LT-2W H1205LT-2W* H1212LT-2W* H1215LT-2W H2405LT-2W* H2412LT-2W* 24 21.6-26.4 12 10.8-13.2 5 4.5-5.5 Voltage (VDC) Nominal Range Voltage (VDC) 5 12 15 5 12 15 5 12 15 Output Current (mA) Max 400 167 133 400 167 133 400 167 133 Min 40 17 13 40 17 13 40 17 13 76 79 78 76 80 79 77 80 78 Efficiency (%, Typ) APPLICATIONS The H_LT-2W 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 6000VDC); 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. H2415LT-2W* *Designing. OUTPUT SPECIFICATIONS Item Output power Line regulation For Vin change of 1% 10% to 100% load (5V output) Load regulation 10% to 100% load (12V output) 10% to 100% load (15V output) Output voltage accuracy Temperature drift Ripple & Noise* Switching frequency 100% full load 20MHz Bandwidth Full load, nominal input 150 50 12.8 6.8 6.3 Test Conditions Min 0.2 Typ Max 2 1.2 15 15 15 % Units W See tolerance envelope graph 0.03 200 %/C mVp-p KHz *Test ripple and noise by "parallel cable" method. See detailed operation instructions at Testing of Power Converter. Section, application notes. MODEL SELECTION H0505LT-2W R ated Pow er Package Styl e Output Vol tage Input Vol tage Product Series COMMON SPECIFICATION Item Storage humidity Operating temperature Storage temperature Temp. rise at full load Lead temperature 1.5mm from case for 10 seconds -40 -55 15 Test Conditions Min Typ Max 95 85 125 25 260 Free air convection Plastic(UL94-V0) Continuous, automatic recovery 3500 3.8 K hours g 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 Short circuit protection MTBF Weight The copyright and authority for the interpretation of the products are reserved by Mornsun Specifications subject to change without notice. H_LT-2W A/0-2009 Page 1 of 2 ISOLATION CHARACTERISTICS Item Isolation voltage Isolation resistance Isolation capacitance Test Conditions Tested for 1 minute and 1mA max Test at 500VDC Min 6000 1000 10 Typ Max Units VDC M pF 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). L Vin Cin G ND L +Vo TYPICAL CHARACTERISTICS DC DC (Figure 1) Cout 0V 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. For every Operating Temp.(oC) channel of output, provided the safe and reliable operation is ensured, the recommended capacitance of its filter capacitor sees (Table 1). EXTERNAL CAPACITOR TABLE (Table 1) RECOMMENDED REFLOW SOLDERING PROFILE 2 50 Temperature ( C ) 2 00 1 50 1 00 50 0 P eak. Temp 26 0 C 10 Sec Max 220 C Vin (VDC) 5 12 24 Cin (uF) 4.7 2.2 1 Single Vout (VDC) 5 12 15 Cout (uF) 10 2.2 1 90 Sec M ax (> 22 0 C ) It's not recommend to connect any external capacitor in the application field with less than 0.5 watt output. Tim e (s ec .) OUTLINE DIMENSIONS & PIN CONNECTIONS First Angle Projection 23.86 (0.940) 8.00 (0.315) 7.50 (0.295) (Side View) 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). RECOMMENDED FOOTPRINT Top view,grid:2.54mm(0.1inch) 3.04 (0.120) 18.50(0.728) 16 (Top View) 2.54 (0.100) 16 10 9 13.70 (0.540) 10 9 78 2.00 (0.079) Vin GND REG +Vout DC DC 0V REG 1 15.24(0.600) 78 1 Vin 1.00 (0.039) +Vout GND DC DC 0V FOOTPRINT DETAILS A (Figure 2) 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. No parallel connection or plug and play. 13.10 (0.516) 18.50(0.728) A 0.50 (0.020) Pin Function 1 GND 7 NC 8 NC +Vo 9 10 -Vo 16 Vin NC:No Connection 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) 5.0MAX 1.35 (0.053) APPLICATION NOTE Requirement On Output Load To ensure this module can operate efficiently and reliably, a minimum load is specified for this kind of DC/DC converter in addition to a maximum load (namely full load). During operation, make sure the specified range of input voltage is not exceeded, 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 a resistor with proper resistance at the output end in parallel to increase the load, or use our company's products with a lower rated output power. 0.25 (0.010) Note: 1. All specifications measured at Ta=25C, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 2. Only typical models listed, other models may be different, please contact our technical person for more details. 3. Operation under minimum load will not damage the converter; However, they may not meet all specification listed. The copyright and authority for the interpretation of the products are reserved by Mornsun Specifications subject to change without notice. H_LT-2W A/0-2009 Page 2 of 2 |
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