TPS7A4901DGNT

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TPS7A4901DGNT is a linear voltage regulator part of Texas Instruments’ Ultra-Low Quiescent Current (ULQC) family and provides an output of 400mA, adjustable from 0.9V up to 5.5V. It is designed to operate with a quiescent current of 1.15mA, and the dropout voltage is typically 200mV at 400mA load and 4.5V output. This regulator features excellent transient response characteristics that make it ideal for high current applications, as well as excellent power supply rejection ratio, high output accuracy, and low output voltage noise. The device also incorporates a low-noise regulator architecture and thermal protection.

The TPS7A4901DGNT can be used in applications including power supplies, automotive and industrial systems, instrumentation and medical. Because of its low quiescent current and high output current, it is particularly well suited for powering low power processors or memory devices. It is also suitable for powering battery-powered systems that require long battery life, as it consumes minimal quiescent current. Finally, the ESD ratings of the TPS7A4901DGNT make it suitable for use in automotive and industrial systems, which can be subject to high levels of electrostatic discharge.

The TPS7A4901-Q1 is designed to operate at a fixed output voltage of 3.3V, but can also be programmed to deliver a selectable voltage from 0.8 to 5.5V. The voltage can be selected through the use of an external resistor or capacitor. The regulator is offered in Thermal Shutdown Optimized mode, which allows for improved system transient response, and it is equipped with safety features for enhanced system reliability. The device includes an overtemperature protection circuit that shuts down the output voltage when the junction temperature reaches 160°C. In addition, the device has built-in current-limiting protection to protect against output short circuits.

The TPS7A4901DGNT is a standard low drop-out (LDO) linear voltage regulator designed to provide a regulated output voltage while consuming minimal power. The device operates at a preset voltage determined by an external resistor divider connected to the adjustment terminal. When the input voltage drops below the output voltage, the LDO enters a dropout state and the load is supplied with the input rail voltage. The TPS7A4901-Q1 also features an enable pin, which can be used to put the device into a low power, standby state.

The TPS7A4901DGNT is suitable for a wide range of applications due to its low current consumption, low dropout voltage, wide output regulation range and excellent protection features. With its extreme power efficiency, low quiescent current, adjustable output voltage, and thermal protection, it is ideal for a wide range of power supply design needs. It can be used in any system where precise voltage regulation is required, as it has a high accuracy over temperature and load.

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