TPS76718QPWPR

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The TPS76718 (QPWPR) linear voltage regulator, developed by Texas Instruments, is a high performance low power LDO regulator, having high accuracy and low noise, providing output voltage options in the range of 0.9V to 5.5V. Its power management capability, low input/output voltage rise, and very low quiescent current make it ideal for many applications where low power is of utmost importance.

The TPS76718 uses a two-stage architecture, featuring an internal compensation network made up of a precision current-limited driver, thermal shutdown and overtemperature protection, and an internal voltage reference, to provide a linear output voltage with a precision of ±2V. In addition, the device is designed to operate with an input voltage of 4.5V to 5.5V and is fully protected against short-circuit, reverse polarity, and overcurrent conditions.

TPS76718QPWPR is ideal for applications such as notebooks, PDAs, mobile phones, and digital cameras, which are power sensitive and require extremely low standby power consumption. Its low-power output options, low input/output voltage rise, and low quiescent current make it a great solution for applications such as graphics cards, MP3 players, game consoles, and other powered electronic devices.

Some of the features of the TPS76718QPWPR linear voltage regulator includes:

• 5.5V maximum input voltage
• 0.9V minimum output voltage
• 2V accuracy
• Low quiescent current of 34µA
• Low dropout of 135mV at maximum load current
• Thermal shutdown and overtemperature protection
• Precision current-limited driver
• Low profile 3-pin SOT-23 package

The working principle of the TPS76718QPWPR linear voltage regulator is quite simple. The device features an internal voltage reference, an input voltage range selector, a precision current-limited driver, thermal shutdown and overtemperature protection, and a feedback circuit that compares the output voltage to the internal reference voltage. When the output voltage of the regulator rises above or falls below the reference voltage, the voltage regulator adjusts the output voltage accordingly. This ensures that the output voltage is kept within the specified accuracy range.

In addition, the TPS76718QPWPR linear voltage regulator features internal thermal shutdown and overtemperature protection. During normal operation, the device operates with a quiescent current of 34µA, while the input/output voltage rise is less than 4mV. When the temperature of the device exceeds a certain threshold, the thermal shutdown protection turns off the output voltage and hence in turn restricts large amount of current to flow through the device. During over-temperature operation, the device is powered off and the user can reset the device by thermal shutdown recovery.

The TPS76718QPWPR linear voltage regulator is one of the most popular voltage regulators and is ideal for applications where low power, high accuracy, and low noise are of utmost importance. Its low-power output options, low input/output voltage rise, and low quiescent current make it a great solution for many applications.

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