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IF0505RN-1W Datasheet(PDF) 2 Page - MORNSUN Science& Technology Ltd. |
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IF0505RN-1W Datasheet(HTML) 2 Page - MORNSUN Science& Technology Ltd. |
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2 / 2 page  MORNSUN reserves the copyright Specifications subject to change without notice. IF_RN-1W&IF_RT-1W A/0-2008 Page 2 of 2 TYPICAL CHARACTERISTICS APPLICATION NOTE Operating Temp.( ) C Temperature Derating Graph RECOMMENDED REFLOW SOLDERING PROFILE 0 50 100 150 200 250 Ti me ( s ec .) 2 2 0C o 1 0 M ax S ec 26 0C o 90 Max ( >220 C) o Sec OUTLINE DIMENSIONS & FOOTPRINT DETAILS First Angle Pr ojection RECOMMENDED FOOTPRINT Top view,grid:2.54*2.54mm( 0.1*0.1i nch) IF_RN-1W Series IF_RT-1W Series F OOTP R IN T D E TA ILS Pin Function NC:No Connection Note: Unit:mm(inch) Pin section:0.50*0.25mm(0.020*0.010inch) Pin section tolerances: 0.10mm( 0.004inch) General tolerances: 0.25mm( 0.006inch) 1 2 5 6 7,8,14 Vin GND 0V +Vo NC 1 2 5 6 7,8,14 Vin GND 0V +Vo NC NC:No Connection Pin Function 2.54 (0.010) 19.50(0.768) 5.00 (0.197) (0.177) 7.62 (0.300) 7.62 (0.300) 10.53 (0.413) 2.54 ( 0.010) 5.10 (0.201) (0.177) 1 2 5 67 8 14 1 2 56 7 8 14 1.00 (0.039) S ide View B ottom View 1 2 5 67 8 14 1 2 5 67 8 14 1.00 (0.039) 19.50(0. 768) 4.50 4.50 F OOT P R IN T D E TAILS 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 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. Recommended testing 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 GND +Vo 0V DC Cin L DC Cout (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 arise. For every channel of output, provided the safe and reliable operation is ensured, the greatest capacitance of its filter capacitor sees (Table 1). EXTERNAL CAPACITOR TABLE (Table 1) Vin (VDC) Cin (uF) Vout (VDC) Cout (uF) 5 4.7 5 4.7 It ’s not recommended to connect any external capacitor in the application field with less than 0.5 watt output. Overload Protection Under normal operating conditions, the output circuit of these products has no protection against over load. The simplest method is to connect a self-recovery fuse in series at the input end or add a circuit breaker to the circuit. Input Over-voltage Protection Circuit The simplest device for input over-voltage protection is a linear voltage regulator with overheat protection that is connected to the input end in series (Figure2). Vin GND REG +Vout DC DC 0V （Figure2） No parallel connection or plug and play. |
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