TCR5AM09,LF

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TCR5AM09,LF application field and working principle

TCR5AM09,LF is a type of PMIC (Power Management Integrated Circuit) Voltage Regulator, the Linear type specifically. It is designed to provide an output voltage of 5V with an input voltage ranging from 3V to 18V to the device, at currents up to 1A. A few of its application fields are consumer electronics, industrial, communications, computing, and mobile products.

Requirements for implementation

The TCR5AM09,LF comes with a few requirements for proper implementation, including a power supply of 3V-18V, input and output capacitors of 0.47µF ceramic MLCC or equivalent, and a ceramic ESD protection device. Additionally, there are a few other recommended components for implementation, such as resistors for voltage divider for input voltage, Schottky diode for reverse power protection, and usually a larger capacitor on the output.

Benefits of using Linear Voltage Regulator

The primary benefit of using a Linear Voltage Regulator is the reduced static power dissipation compared to switching regulators. Other advantages include:

• Reduced switching noise (EMI)
• Easy to implement due to fewer external components
• Low heat dissipation
• Low output impedance
• No input/output inductors required
• Long-term stability and accuracy

Working principle

A Linear Voltage Regulators works through the principle of negative feedback. The incoming voltage is compared to a reference voltage, and any deviation causes the regulator to control the current flow to bring the voltage back to the reference value. The reference voltage is set in advance by designers. The output current flows in such a way that the voltage difference between the output and reference is kept constant. The current or voltage needed to maintain the reference voltage is pulled from the input power supply and is referred to as the load current. The circuitry of the regulator is designed to sense the output load current, which is adjusted as per the difference between input and output voltage in order to maintain the output voltage at its set reference level.

Conclusion

The TCR5AM09,LF is a type of linear voltage regulator PMIC that provides a reliable output voltage of 5V with an input voltage ranging from 3V to 18V. It is an easy to implement device that comes with all the necessary components for proper implementation. It is most suitable for consumer electronics, industrial, communications, computing and mobile products, although it can also be used in other applications. Its working principle is based on negative feedback, by comparing the incoming voltage to a reference voltage that is set by the designer and adjusting the current flow as needed to maintain it at the reference value.

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