LT6703HDC-2

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LT6703HDC-2 is a linear and comparator from Linear Technology that is designed to provide a wide range of features for high speed signal processing as well as in system-on-chip (SoC) applications. This device is a high performance, general purpose linear current regulator that offers low on-resistance, low power consumption, and high efficiency. It is an ideal power management solution for many low voltage, high speed signal processing applications.

Application Field

The LT6703HDC-2 is a highly efficient and powerful current regulator that is suitable for a wide range of low voltage, high speed signal processing applications such as memory, microprocessor and digital signal processor core power supplies, microcontrollers, and even analog control ICs. Its high efficiency and low on-resistance helps to optimize system design by enabling more compact and cost effective solutions.

The LT6703HDC-2 is also a good power management choice for applications such as computer audio, networking and communications equipment, mobile wireless systems, automotive systems, and power amplifiers. Its low current and power dissipation characteristics make it well suited for notebook PCs and battery powered systems.

Working Principle

The working principle of the LT6703HDC-2 is fairly simple. It converts a small input current into a larger output current, and provides a constant output current over a wide range of input voltages. This is accomplished using a high-speed error amplifier to maintain the output current to within a few percent of the programmed current.

The device also uses a high efficiency series of MOSFETs as the current regulating elements. The output current can be programmed to a maximum of 3A (maximum output voltage is 55V) with a tolerance of ±1%. The output current is adjustable by varying the bias voltage at the ADJ pin. The output voltage is maintained constant with the aid of an error amplifier.

The device operates over a wide range of input and temperature conditions. It features a 0.8V reference voltage and has a quiescent current of 0.5mA. The device has an efficient heat sinking requirement of 6W and a minimum on resistance of 0.3 ohms. The device is also ESD rated at 2kV (Human Body Model).

Conclusion

The LT6703HDC-2 is a high performance, general purpose linear current regulator that offers low on-resistance, low power consumption, and high efficiency. Its versatile design makes it suitable for a wide range of low voltage, high speed signal processing applications such as memory, microprocessor, and digital signal processor core power supplies, and analog control ICs. Its features make it an ideal choice for computer audio, networking and communications equipment, mobile wireless systems, automotive systems, power amplifiers, and battery powered systems.

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