LX8587A-00CDD

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LX8587A-00CDD is a linear voltage regulator, belonging to the family of Power Management Integrated Circuit (PMIC) - Voltage Regulators - Linear. It is used in a wide range of applications and plays a vital role in ensuring proper power supply and loading of the circuit. This article explains the application fields and the working principle behind it.

Application fields:

The device can be used in various applications including automobile electronics, digital audio, medical devices, portable electronics, audio amplifiers, power supplies, digital multiplexers, digital signal processor (DSP) applications, touch-screen panels, radio receivers and other consumer electronics. It is particularly suitable for high power density designs, as it provides a wide voltage range from 0.9 V to 30 V with low drop out voltage and current limit. The low quiescent current of the device ensures it consumes minimal power. In addition, the device operates within a temperature range of -40 °C to 125 °C.

Working principle:

The device functions as a linear regulator, working on the principle of variable impedance to control output voltage. An N-channel enhancement-mode power MOSFET is used in the device to regulate the output voltage. The MOSFET works in series with a current sense resistor to determine the current flowing in the circuit. The voltage developed across the resistor is compared to the reference voltage by an internal error amplifier. Any feedback voltage in excess of the reference voltage produces a corresponding error signal. This signal is used to adjust the gain of the input stage, which in turn adjusts the impedance, thereby controlling output voltage. The low temperature coefficient of the device ensures tight regulation of output over the specified temperature range.

The high input voltage capability ensures that the device can be used in a wide range of applications, from car audio systems to medical instrumentation. The device also comes with an enable facility for remote sensing, low inrush current limit, and overcurrent protection. This ensures reliable operation and greater system flexibility.

The LX8587A-00CDD is a cost-effective, reliable, and efficient device that proves to be a great choice for many applications. Its combination of features and reliability makes it an excellent choice for providing a stable and reliable power supply.

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