SIP21107DVP-45-E3

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The SIP21107DVP-45-E3 is a linear voltage regulator from Linear’s PMIC product family. It is a low voltage, low dropout (LDO) linear regulator for 3-2V applications that provides excellent line and load regulation, as well as low quiescent current (Iq). The device is capable of sourcing current up to 800mA and has an adjustable output from 0.75V to 2.5V.

The SIP21107DVP-45-E3 has an external control pin (EN) which can be used to control the output voltage to an adjustable level between 0.75V and 2.5V. The output voltage is set by an external adjustable resistor. It also features thermal overload protection, current limit protection, and reverse current protection.

This product provides excellent output accuracy, ripple rejection and low noise performance while operating at low supply current. Its wide input voltage range of 2.2 - 5.5V makes the product ideal for tight voltage control applications in telecommunications, consumer electronics, data communications, and automotive systems.

The SIP21107DVP-45-E3 has numerous applications in communication and consumer devices such as set-top boxes, PDA ports, digital still cameras, cellphones, and other large scale ICs used in consumer electronics products. Additionally, it is suitable for wide input voltage and high load current applications in automotive products such as car audio systems, rearview mirror displays, and tire pressure monitoring systems.

The SIP21107DVP-45-E3 is designed to operate over a broad temperature range of -40°C to 125°C and is compatible with the automotive industry’s Automotive Electronics Council (AEC) Q100 Grade 3 standard.

The working principle of the SIP21107DVP-45-E3 LDO regulator is based on a regulation loop. The regulation loop consists of a voltage reference, an operational amplifier, and a pass transistor. The voltage reference provides a stable voltage signal which is compared to the feedback voltage provided by the output of the regulator circuit. This comparison results in an error signal that is used to adjust the current through the pass transistor which is proportional to the difference between the reference voltage and the feedback voltage.

The SIP21107DVP-45-E3’s linear topology is able to eliminate the need for high-speed switching, thus contributing to a low output noise level and reduced EMI, in addition to reducing the output voltage ripple. Furthermore, the device is able to provide better output voltage accuracy and higher load current at a lower input voltage than switched regulators. In addition, the low dropout operating mode of the SIP21107DVP-45-E3 allows the device to operate conditionally at low input voltages without sacrificing its normal regulation accuracy or stability.

The SIP21107DVP-45-E3 is an excellent choice for applications where extreme voltage accuracy, low output ripple, low dropout, and low noise characteristics are paramount. It is capable of providing a stable output voltage over a wide input voltage range, making it well suited for applications in telecommunications, consumer electronics, data communications, and automotive systems.

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