LT1073CN8-5#PBF

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LT1073CN8-5#PBF is a monolithic switching regulator. This integrated circuit operates on input voltage of 8.5 volts that can be relatively large, and it can supply fixed output voltage of 5 V. It is an advanced Switch-FN technology, and helps make board size small and achieve higher efficiency with low external component count.LT1073CN8-5#PBF belongs to DC-DC switching regulator. Switching voltage regulators convert one DC voltage to another which allows for efficient conversion of voltages. When rendered in steady state, switching regulators dissipate very less power as compared to linear regulators. This fact facilitates compact heat sinking and switching regulators are extensively used in machines that require DC-DC conversions. These include UPS, chargers, solar applications and voltage references.An internal oscillator with frequency of 250 KHz is used to drive the power MOSFET switch. The power MOSFET switch is operated in exchange of the frequency. To ensure duty cycle is optimized, feedback voltage is compared to internal reference voltage of 5.5V. The LT1073CN8-5#PBF ensures a clean output voltage of 5V and can handle loads up to 800 mA.The switching regulator consist of an inductor, an 85 - 95% effluent diode, an output capacitor, an input capacitor and a switching control/comparator circuit.The inductor is used to store energy from the input voltage and deliver it to the output load. The power MOSFET switch on/off determines the size of inductor as duty cycle of the circuit.The diode is used to convey energy from the inductor to the output load when the switch is off. The output capacitor is used to maintain the output voltage. The input capacitor is used to check the input voltage ripple and noise.The switching control/comparator circuit is the heart of the circuit and contains a differential amplifier, an oscillator and other drivers.LT1073CN8-5#PBF has several application fields. Firstly, it can be used to establish an efficient DC-DC power conversion. It also provides an efficient buck regulator in lup/quarter VCC and a current-mode buck regulator in I2C applications. Secondly, it can be used in applications such as PCs, laptops and other battery powered electronics. LT1073CN8-5#PBF can also be used for low voltage projectors. Additionally, this integrated circuit is also ideal for automotive applications such as automotive infotainment systems. Lastly, it is used in Advanced Subscriber Line (ASL) for power over Ethernet (PoE) systems.In conclusion, LT1073CN8-5#PBF is a monolithic switching regulator which is widely used in various applications such as powering PCs, laptops, automotive infotainment systems, low voltage projectors and power over Ethernet (PoE). It has a working principle of using an internal oscillator to drive the power MOSFET switch and provides a clean output voltage of 5V with a maximum load of 800 mA. It is part of the PMIC - Voltage Regulators - DC DC Switching Regulators and can be implemented effectively to achieve efficient DC-DC power conversion.

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