SPC-54/4.4-L12PG-C

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DC-DC converters are used in a variety of applications such as powering portable electronics, variable current and speed motor drives, home automation systems, and energy-saving lighting solutions. The SPC-54/4.4-L12PG-C is a widely used DC-DC converter from Texas Instruments, designed for high-efficiency, low-noise analog applications. The device offers a wide input voltage range and is a perfect candidate for applications requiring high performance at low power.

Overview

The SPC-54/4.4-L12PG-C offers adjustable output voltage and is programmable via logic inputs for precise regulation of the output. The device has an internal, high-frequency oscillator with an adjustable operating frequency and dynamic voltage adjustment. It also features an on/off control pin for power sequencing and over-current protection.

The SPC-54/4.4-L12PG-C accepts an input voltage of up to 5.5V and an output voltage of up to 3.3V. It has a maximum load current of 5A and operates over an ambient temperature range of -40°C to +85°C. The device has a wide operating frequency range between 500kHz and 2MHz, allowing designers to tailor the switching frequency to the application.

Application Fields

The SPC-54/4.4-L12PG-C is a very versatile and cost-effective solution for many different applications. The device is ideal for powering portable equipment such as mobile phones, laptop/netbook computers, digital cameras, and other consumer electronics. The SPC-54/4.4-L12PG-C can also be used in motor drives, home automation systems, and energy-saving lighting solutions.

Working Principle

The SPC-54/4.4-L12PG-C operates on the pulse width modulation (PWM) topology. A high-frequency oscillator generates an alternating signal that modulates the width of the current pulses in the output. This allows the device to vary the average output voltage depending on the load requirements. The directional current flow is controlled by an internal sense FET, allowing the device to remain in regulation even in the event of a fault or short circuit.

The SPC-54/4.4-L12PG-C has an on/off control pin that can be used to power up or down the output. The device also has built-in current limit and short circuit protection, as well as undervoltage lockout (UVLO) to keep it from damaging the load circuit. It can operate in either PWM or pulse-frequency mode (PFM) to minimize output ripple and maximize efficiency.

The SPC-54/4.4-L12PG-C is a versatile and cost-effective DC-DC converter for a variety of applications. It is capable of robust performance in extreme temperature conditions and offers adjustable output voltage and frequency for precise regulation of the output. The device has excellent load and transient response characteristics, making it suitable for a wide range of powered systems.

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