TCR5AM18,LF

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PMIC - Voltage Regulators - Linear - TCR5AM18,LF Application Field and Working Principle

The TCR5AM18,LF voltage regulator from Texas Instruments (TI) is a linear user programmable voltage regulator. This voltage regulator is versatile, reliable and cost effective for a variety of applications. It is a simple, low cost solution for designers looking to quickly and accurately deliver a regulated output voltage. TI\'s TCR5AM18,LF voltage regulators are designed to operate in a wide range of conditions and are versatile and adaptive to the applications they are designed to serve.

Overview

The TCR5AM18,LF is a linear, user programmable voltage regulator from the Texas Instruments (TI) family of linear low-voltage power management ICs. This voltage regulator is capable of delivering a regulated output voltage up to 4.3 volts and is optimized for output voltage accuracy, response time, power efficiency and noise immunity. The device can be programmed for output voltages as low as 1.4 volts allowing a wide range of application voltages. The TCR5AM18,LF provides excellent noise immunity and is ideal for use in cellular, automotive and other high-temperature environments where robust power management solutions are required.

Features

• User defines the output voltage of the regulator up to 4.3 volts.
• Minimum output voltage is 1.4 volts.
• Output voltage accuracy within 0.6%.
• High efficiency.
• Low EMI output.
• Low quiescent current.
• Thermal protection.
• Consumes only 60uA at no load.

Applications

• Cellular phones and other portable consumer devices.
• Medical and automotive applications.
• Industrial power conversion.
• Battery operated systems.
• Battery chargers.
• Redundant power supplies.
• Power conversion circuits.
• Power management.
• Power control systems.

Working Principle

The TCR5AM18,LF voltage regulator works by using the feedback network to adjust the output voltage to a pre-set level. The voltage regulator is enabled and disabled via the enable/disable signal, allowing flexible control over the output voltage. The device uses an internal bandgap reference to achieve an output voltage accuracy of + 0.6%. An error signal is generated by comparing the feedback voltage with the internal reference voltage and drives an adjustable current source to regulate the output voltage. The device utilizes a constant on-time control scheme at light load where the output voltage is linearly proportional to the input voltage. The device features a power-saving mode of operation at light load, which reduces the quiescent current to 60uA.

Conclusion

The TCR5AM18,LF adjustable voltage regulator from Texas Instruments offers a low cost and reliable solution for power management applications requiring wide input voltage range and accurate output voltage regulation. The device features a wide range of adjustable output voltages and is capable of output voltage accuracy within 0.6%, making it ideal for a variety of applications. The device also offers excellent noise immunity, low quiescent current and thermal protection making it ideal for automotive, medical and a variety of other industrial applications requiring precision and reliability.

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