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B1203S/D-W2 Datasheet(PDF) 2 Page - MORNSUN Science& Technology Ltd. |
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B1203S/D-W2 Datasheet(HTML) 2 Page - MORNSUN Science& Technology Ltd. |
2 / 3 page ![]() The copyright and authority for the interpretation of the products are reserved by Mornsun Specifications subject to change without notice. B_S(D)-W2 A/4-2009 Page 2 of 3 OUTPUT SPECIFICATIONS APPLICATION NOTE Item Test conditions Min. Typ. Max. Units Output power 0.25 W For Vin change of 1%(3.3V output) ±1.5 Line regulation For Vin change of 1%(others output) ±1.2 10% to 100% load(3.3 output) 15 20 10% to 100% load (5V output) 12.8 15 10% to 100% load (9V output) 8.3 15 10% to 100% load (12V output) 6.8 15 Load regulation 10% to 100% load (15V output) 6.3 15 % Output voltage accuracy See tolerance envelope graph Temperature drift 100% full load 0.03 %/ °C Ripple & Noise* 20MHz Bandwidth 50 75 mVp-p Switching frequency Full load, nominal input 110 KHz *Test ripple and noise by “parallel cable” method. See detailed operation instructions at Testing of Power Converter section, application notes. Operating Temp.( C) o TYPICAL CHARACTERISTICS RECOMMENDED CIRCUIT 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). 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). Overload Protection Under normal operat ing 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 L Vin GND +Vo 0V DC Cin L DC Cout (Figure 1) Vin GND Vin GND REG +Vo 0V +Vo DC DC DC DC REG 0V (Figure 2) |
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