TPS51620RHAR

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The Texas Instruments TPS51620RHAR is a high performance integrated circuit (IC) designed for regulating output voltage for Special Purpose applications. It is a regulator and offers a wide range of features and advantages with ultra-low quiescent current, high reliability and high performance.

The TPS51620RHAR is optimized for use in a wide range of applications, including lighting, automotive and industrial control systems, and industrial and communications markets. It supports a wide input voltage range and offers adjustable output voltage, adjustable overload current protection, and adjustable soft start. The device is suitable for applications such as non-volatile memory, such as NOR/NAND flash, where high reliability, low quiescent current, high efficiencies are essential.

Working Principle

The TPS51620RHAR is a synchronous buck regulator that uses voltage-mode control to provide fast transient response. It is designed to accept wide input voltages from 1.5V to 5.5V and offers adjustable output voltage from 0.6V to 5.0V. It provides adjustable soft start and adjustable overload current protection for improved system reliability.

The device utilizes an error amplifier to compare the reference voltage with the output voltage to generate the drive signal to the output switch. When the regulated output voltage is lower than the reference voltage, the error amplifier increases the output drive signal to turn on the output switch and to charge the output capacitor. When the regulated output voltage is higher than the reference voltage, the error amplifier reduces the output drive signal to turn off the output switch and to discharge the output capacitor.

In addition, the TPS51620RHAR features an internal thermal shutdown protection that prevents damage in the case of an overload situation or when the IC temperature reaches an unsafe level. It is provided with a power-good signal that can be used to monitor the voltage on the output. This signal is reset to off when the output voltage drops below 90% of its regulated value. Other protection features include under-voltage lockout and overcurrent protection. All of these features ensure the system is protected from various voltage or current faults.

Application Field

The TPS51620RHAR is suitable for a wide range of applications, including but not limited to applications such as NOR/NAND flash memory, automotive and industrial control systems, and embedded systems. It also can be used in lighting, such as LED lighting, and can also be used to provide over-current protection and switches for industrial motor control systems. It can also be used in industrial and communications markets where high reliability and high efficiency are essential.

This device provides adjustable voltage, adjustable soft start, adjustable overload current protection, and adjustable power-good timeout. Its wide operating temperature range, higher frequency range, and small size makes it ideal in all types of power-management applications. The high efficiency and low quiescent current make it one of the most versatile and efficient voltage regulators on the market today.

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