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ILE4270G Datasheet(PDF) 3 Page - IK Semicon Co., Ltd |
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ILE4270G Datasheet(HTML) 3 Page - IK Semicon Co., Ltd |
3 / 8 page ILE4270 Circuit Description The control amplifier compares a reference voltage, which is kept highly accurate by resistance adjustment, to a voltage that is proportional to the output voltage and drives the base of a series transistor via a buffer. Saturation control as a function of the load current prevents any over-saturation of the power element. If the output voltage decreases below 4.5 V, an external capacitor CD on pin 4 (D) will be discharged by the reset generator. If the voltage on this capacitor drops below VDRL, a reset signal is generated on pin 2 (RO), i.e. reset output is set low. If the output voltage rises above 4.5 V, CD will be charged with constant current. After the power-on-reset time the voltage on the capacitor reaches VDU and the reset output will be set high again. The value of the power-on-reset time can be set within a wide range depending of the capacitance of CD. The IC also incorporates a number of internal circuits for protection against: • Overload • Overvoltage • Overtemperature • Reverse polarity Block Diagram 3 |
Similar Part No. - ILE4270G |
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Similar Description - ILE4270G |
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