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B0515LT-2W Datasheet(PDF) 2 Page - MORNSUN Science& Technology Ltd. |
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B0515LT-2W Datasheet(HTML) 2 Page - MORNSUN Science& Technology Ltd. |
2 / 2 page MORNSUN reserves the copyright Specifications subject to change without notice. A_LT-2W & B_LT-2W A/1-2008 Page 2 of 2 ISOLATION CHARACTERISTICS Item Test Conditions Min Typ Max Units Isolation voltage Tested for 1 minute and 1mA max 1000 VDC Isolation resistance Test at 500VDC 1000 M Ω TYPICAL CHARACTERISTICS Operating Temp.( C) o RECOMMENDED REFLOW SOLDERING PROFILE 0 50 100 150 200 250 Ti m e (s ec .) 220 10 M ax S ec P eak.Tem p 260 90 M ax ( > 220 ) S ec C C C OUTLINE DIMENSIONS & PIN CONNECTIONS 1.27 2.54 1.30 0.13 5.0 MAX 。 (0.050) (0.100) 2 3 5 67 8 9 10 12 13 14 17.78 (0.700) (0.052 0.005) A A FOOTPRINT DETAILS Pin S ingles Duals 1 2 5 7 6 Vin GND NC +Vo 0V Vin GND -Vo +Vo 0V 10 NC -Vo Others NC NC NC:No Connection RECOMMENDED FOOTPRINT Top view,grid:2.54*2.54mm(0.1*0.1inch) Dual output & Singl e Output First Angle Projection Note: Unit:mm(inch) Pi n section:0.60*0.25mm(0.024*0.010inch) Pi n tolerances: 0.10mm( 0.004inch) General tol erances: 0.25mm( 0.010inch) 1 13 12 10 98 14 2 3 5 67 1 2.00 (0.079) 1.00 (0.039) APPLICATION NOTE 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 (A_T -1W/B_T-1W series). 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. 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 Singl e Output Vin GND +Vo 0V DC Cin L L DC L Cout Cout -Vo 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 recommended capacitance of its filter capacitor sees (Table 1). EXTERNAL CAPACITOR TABLE (TABLE 1) Vin (VDC) Cin (uF) Single Vout (VDC) Cout (uF) Dual Vout (VDC) Cout (uF) 5 4.7 5 10 ±5 4.7 12 2.2 9 4.7 ±9 2.2 - - 12 2.2 ±12 1 - - 15 1 ±15 0.47 It ’s not recommended to connect any external capacitor in the application field with less than 0.5 watt output. 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). Dua l O u tp ut S i ng l e O u tput Vin GND 0V +Vout DC DC -Vout Vin GND 0V +Vout DC DC REG REG REG REG REG (Figure 2) No parallel connection or plug and play. |
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