LP2985AIM5X-4.5/NOPB

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Linear voltage regulators are one of the most commonly used power management solutions and can be found in a wide range of applications. The LP2985AIM5X-4.5/NOPB from Texas Instruments is a low-dropout (LDO) linear voltage regulator capable of providing up to 4.5A of output current. It offers superior power management performance and can be used in multiple applications in different areas.

Applications

The LP2985AIM5X-4.5/NOPB is suitable for a variety of applications ranging from portable computers, smartphones, and tablets to industrial control systems. It can be used to regulate supply voltages for processors, memory, and other system components. It is also suitable for high Current integrated circuits such as FPGAs and ASICs. Additionally, it can also be used as a drop-in replacement for Standard LDO regulators.

Features

The LP2985AIM5X-4.5/NOPB features an operating range of 4.5V-28V, ultra-low dropout of 200mV at 4.5A, and an output voltage adjustable range of 1.25V to 25.5V. It has a high-performance DC gain of 75dB, high PSRR of 80dB and fast transient response that begins within 5μs of any load change. It is capable of supplying up to 4.5A of output current over a -40°C to +85°C temperature range with a maximum output voltage tolerance of ±2%. It also supports efficient thermal management for steady operation without the need for external heat sinks.

Working Principle

The LP2985AIM5X-4.5/NOPB utilises an input-output control loop with a feedback network that responds to load changes by compensating for voltage drops across the output stage. This provides better load regulation, with improved stability and transient response. The operating principle is based on the standard linear voltage regulator topology, which uses an error amplifier to adjust the reference voltage of a voltage divider in order to remain in regulation. The output voltage accuracy is maintained as the amplifier continually adjusts the reference voltage to compensate for changes in load, environmental conditions, and other factors.

Conclusion

The LP2985AIM5X-4.5/NOPB is a low-dropout linear voltage regulator with excellent power management performance. It offers an adjustable output voltage ranging from 1.25V to 25.5V and can supply up to 4.5A of current. It is suitable for a variety of applications ranging from portable electronics to industrial control systems. The Regulator also offers an ultra-low dropout of just 200mV at 4.5A, which helps to reduce power loss and increase efficiency. With its fast transient response and excellent line and load regulation, the LP2985AIM5X-4.5/NOPB is ideal for modern applications.

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