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B2405YS-W2 Datasheet(PDF) 2 Page - MORNSUN Science& Technology Ltd. |
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B2405YS-W2 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. B_YS-W2 A/0-2008 Page 2 of 2 COMMON SPECIFICATION APPLICATION NOTE Item Test Conditions Min Typ Max Units Storage humidity 95 % Operating temperature -40 85 Storage temperature -55 125 Temp. rise at full load 15 25 Lead temperature 1.5mm from case for 10 seconds 300 °C Short circuit protection* 1 S Cooling Free air convection Case material Plastic(UL94-V0) MTBF 3500 K hours Weight 1.6 g *Supply voltage must be discontinued at the end of short circuit duration. TYPICAL CHARACTERISTICS Operating Temp.( C) o OUTLINE DIMENSIONS & FOOTPRINT DETAILS FOOTPRINT DETAILS RECOMMENDED FOOTPRINT Top view,grid:2.54mm(0.1inch), diameter:1.00mm Note: Unit:mm(inch) Pin section:0.50*0.30m m(0.0 20*0.012inch) Pin toler ances: 0.10mm( 0.004inch) Ge neral to le rances: 0.25mm( 0.010 in ch) First Angle Projection Pin Function 1 2 34 1 2 3 4 1 3 4 Vin GND 0V +Vo 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. 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). Vin GND +Vo 0V DC C L L DC C (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. 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). Vin GND Vin GND REG +Vout 0V 0V +Vout DC DC DC DC REG (Figure 2) 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. No parallel connection or plug and play. |
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