TPS76825QPWP

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The TPS76825QPWP is an 800mA high efficiency low dropout (LDO) linear voltage regulator. It provides a wide adjustable output voltage range from 1.25V to 5.5V. Offering an exceptional combination of low quiescent current and low dropout voltage, the TPS76825QPWP is ideal for use with AC adapters, battery-powered systems, and ultra-low noise power supply applications. In addition, the device features a fast transient response and an excellent load regulation.

The TPS76825QPWP is designed for low power applications in the computing, industrial, medical and automotive markets. The device is capable of providing a regulated output current of 800mA, making it well suited for powering small, low power microcontrollers, FPGAs and SoCs, as well as other low power peripherals. It also features built-in protection circuitry for reverse-voltage and over-current protection, making it suitable for use in power sensitive and safety-critical applications. The device is housed in a 6-pin, thermally enhanced, small-outline transistor (SOT)-23-6 package.

TPS76825QPWP Application Field

The TPS76825QPWP is ideal for applications that require low dropout and extremely low quiescent current, such as AC adapters and battery-powered systems. It is also well suited for ultra-low noise power supplies and other applications that require transient response and excellent load regulation. Typical applications include:

• Computer and industrial systems
• Medical devices
• Small form-factor communication equipment
• Portable gaming and music players
• Portable and mobile computer peripherals
• Handheld electronic appliances

TPS76825QPWP Working Principle

The TPS76825QPWP is a high efficiency low dropout linear voltage regulator that uses pulse width modulation (PWM) to regulate the output voltage. The device features an adjustable output voltage range from 1.25V to 5.5V. The TPS76825QPWP utilizes a constant frequency, fixed-frequency current mode PWM architecture to achieve ultra-low quiescent current while maintaining a high-efficiency operation over a wide input and output voltage range. The device also features an adjustable input voltage undervoltage lock-out (UVLO) protection and an over-current protection. Both protections are adjustable using the enable pin and an external resistor. In addition, the device is designed with high PSRR, low noise and fast transient response.

To maximize the efficiency, the TPS76825QPWP features a low quiescent current which is adjustable by an external resistor. The quiescent current of the device is approximately 0.8mA plus the output current divided by the value of the resistor. The output voltage is adjustable by an external resistor divider from 1.25V to 5.5V. The device also features adjustable input voltage UVLO protection which is adjustable from 2.25V to 6.4V, as well as adjustable over-current protection to protect the device from output short circuit.

The TPS76825QPWP is suitable for use in a variety of power sensitive and safety-critical applications, where ultra-low quiescent current and fast transient response is required. Additionally, the device enables high efficiency and offers high PSRR, making it an ideal choice for AC adapter and battery-powered systems and other low power applications.

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