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| Communication ICs DC / DC converter unit BP51L05 / BP51L12 The BP51L05 and BP51L12 are DC / DC converter units that use a pulse width modulation (PWM) system. They contain built-in control circuits, switching devices, rectifiers, and coils, and operate if only an I / O smoothing capacitor is connected. With a wide range of input voltage, the ICs are best suited for obtaining a stable local power source from a main power supply with a large voltage variation. FApplications Power supplies for copiers, personal computers, word processors, industrial equipment, and maintenance tools FFeatures 1) Wide range of input voltage. 2) High power conversion efficiency. FAbsolute maximum ratings 3) Heat sink unnecessary. 4) Compact SIP 9-pin package. 621 Communication ICs FElectrical characteristics S BP51L05 (unless otherwise noted, VI = 15V, IO = 50mA, and Ta = 25_C) BP51L05 / BP51L12 S BP51L12 (unless otherwise noted, VI = 15V, IO = 50mA, and Ta = 25_C) FBlock diagram and measurement circuit 622 Communication ICs FPin descriptions BP51L05 / BP51L12 FOperation notes (1) Reduce output current according to an increase in ambient temperature. Use the IC within the derating curve range. (2) Sudden power increase at the input pin (pin 9) results in increased rush current, and may cause damage to the hybrid IC and overshooting of output voltage. Check for this problem, which is dependent on the rise time of input power supply and load conditions, in the actual application. As a guide, input power supply of 10ms or greater is required against rush current, and 100ms or greater against overshooting. Suppress the peak value of rush current to 2A or less. (3) Pins 2 to 7 are ground pins that are connected to each other internally. Not all pins have to be used. (4) The IC contains no circuit to protect the output current. If short circuit is feared, use the ICP or other protection measures. FElectrical characteristic curves SBP51L05 623 Communication ICs SBP51L12 BP51L05 / BP51L12 FExternal dimensions (Units: mm) 624 |
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