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A1212M-1W Datasheet(PDF) 2 Page - MORNSUN Science& Technology Ltd. |
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A1212M-1W Datasheet(HTML) 2 Page - MORNSUN Science& Technology Ltd. |
2 / 2 page MORNSUN reserves the copyright Specifications subject to change without notice. A_M-1W & B_LM-1W A/1-2008 Page 2 of 2 COMMON SPECIFICATION Item Test Conditions Min Typ Max Units Storage humidity 95 % Operating temperature -40 85 Storage temperature -55 125 Lead temperature 15 25 Temp. rise at full load 1.5mm from case for 10 seconds 300 °C Cooling Free air convection Case material Plastic(UL94-V0) Short circuit protection* 1 S MTBF 3500 K hours Weight 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. TYPICAL CHARACTERISTICS Operating Temp.( C) o OUTLINE DIMENSIONS & PIN CONNECTIONS 1 24 6 5 1 24 6 1 2 4 6 5 Pin Single Dual Vin GND 0V +Vo NC Vin GND 0V +Vo -Vo Note: Unit:m m(inc h) Pin s ection :0.50*0.30mm(0.020*0.012inch) Pin tolerances: 0.10mm( 0.004inch) General tolerance s: 0.25mm( 0.010inch) RECOMMEN DED FOOTPRINT Top view,grid:2.54*2.54mm (0.1 *0.1inch), diameter:1.00m m(0 .039inc h) First Angle Pro jection 0.50 (0.020) 1 2 4 6 5 Single Dual FOOTPRINT DETAILS 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_M –W2/B_LM-W2 series). 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. 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 24 1 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). Du al Ou t put Si ng le O ut put 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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