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| Communication ICs AC / DC converter unit BP5041 The BP5041 is an AC / DC converter which can be used to supply )12V, 100mA DC output from a commercial power supply (200 to 230V AC). Using this unit enables simple, easy drive of microcomputers, LEDs, and other electronic components without using a transformer. It also allows set PCBs to be kept compact and lightweight, with extremely few attachments. This product can accommodate the 200V AC power supplies used as household power supplies in Asia and Europe, as well as in buildings and facilities in Japan. FApplications Power supply circuits for vacuum cleaners, refrigerators, washing machines, air conditioners, irons, electric carpets, cordless telephones, air purifiers, humidifiers, dehumidifiers, home bakery devices, electric hot water pots and rice cookers, illumination devices and other small household appliances, as well as power supply circuits for gas leakage sensors, and other industrial products FFeatures 1) Elimination of a transformer enables compact, lightweight power supply boards. 2) Wide input voltage range. (226 to 358V DC for DC voltage conversion, 160 to 253V for AC voltage conversion) 3) DC power supplies can be easily configured, with few attachments. FAbsolute maximum ratings (Ta = 25_C) 4) Since no transformer is used, the power supply board is less vulnerable to splitting or cracking from impact or shock. 5) Hybridization of the IC reduces the number of labor hours in the assembly process. FRecommended operating conditions 665 Communication ICs FElectrical characteristics (Ta = 25_C) BP5041 FPin descriptions 666 Communication ICs FMeasurement circuit BP5041 FBasic power supply circuit 667 Communication ICs FApplication example BP5041 FSelecting attached components (1) Diodes The rectifying diodes used should fulfill the following conditions. In the absolute maximum ratings, the reverse surge current should be 700V or higher, the average rectifying current should be 0.5A or higher, and the forward surge voltage should be 20A or higher. (2) Capacitor for input voltage smoothing A capacitor with a larger capacitance produces a more stable output voltage, but increases the surge current when the power supply is turned on. A capacitor of between 3.3F and 10F is recommended. The capacitor should have a withstand resistance of at least 400V. FOperation notes (1) The output current needs to be reduced as the ambient temperature rises. (2) Lead pins should be securely soldered. Avoid subjecting this product to strong impact. (3) Excessive current and shorted loads The excessive current limit is a drooping model of approximately 160mA. At 25_C, if excessive output current of higher than 100mA is produced intermittently, or is produced continuously for a total of one minute or longer, the product is vulnerable to damage. If there is any danger of the load being shorted or excessive current being produced, always use a protective device such as a fuse. The fuse should have a fusion current of 0.5A. (3) Capacitor for output voltage smoothing This capacitor should have a low ESR. Capacitors designed for low-impedance switching power supplies are especially suitable. The ESR of the capacitor affects the output ripple voltage. Please refer to the table below for the names of products made by various manufacturers. (4) Regulations governing electrical products As a stand-alone product, this product is not subject to regulations governing electrical appliances. Please be aware, therefore, that applications must be submitted for sets and not for individual products. (5) Insulation This product is not insulated on the primary and secondary sides, and there is a danger of electrical shock if it is touched. (6) Connections with other devices Devices using this product should not be connected to other devices. If connected, insulation should be provided. 668 Communication ICs (7) Pin noise voltage The test circui below (Figure 6) was used in the test whose results are shown in Figure 5. BP5041 669 Communication ICs FElectrical characteristic curves BP5041 FExternal dimensions (Units: mm) 670 |
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