LTC1148HVCS-3.3#TRPBF

The LTC1148HVCS-3.3#TRPBF is a type of DC-DC switching controller integrated within the voltage regulator category of power management integrated circuits (PMICs) designed to provide a low-voltage step-up or step-down power supply. It is designed to reduce the cost and complexity of developing a wide range of off-line power supplies by integrating all the necessary functions within a single IC.

The LTC1148HVCS-3.3#TRPBF has the capability to generate an output voltage of up to 30V, with an input voltage of 7V to 32V VIN. In addition, it features a low quiescent current (2uA) and high efficiency (up to 94% depending on the operating parameters). It is also capable of providing a programmable soft-start time, overvoltage protection, short circuit protection and thermal shutdown (if the device exceeds 145°C). This controller also has the ability to perform a full cycle skip during startup and load isolation.

The application field for the LTC1148HVCS-3.3#TRPBF includes automation and monitoring systems, low-power lighting solutions, handheld devices, industrial equipment, power distribution solutions, and many more.

The operating principle of this controller is simple. It is a synchronous buck-boost topology employing a voltage-mode control scheme. This controller uses voltage-mode control, with internal current and voltage regulation loops, to regulate the output voltage in the desired range with a much higher precision and stability as compared to the conventional hysteretic or pulse-width modulation controllers.

The simple current mode control circuit employed in the LTC1148HVCS-3.3#TRPBF executes the switching of the top MOSFET in order to regulate the current and maintain the output voltage. The voltage is compared with the internally set reference voltage and the difference is amplified and used to modulate the switching frequency of the top MOSFET to maintain the output voltage in the desired range.

Hence, the LTC1148HVCS-3.3#TRPBF is a highly cost-effective and efficient device that provides a wide range of step-up or step-down power supplies, providing tight regulation, high efficiency, low quiescent current, fast response and a wide operating range. This makes it the ideal choice for efficient power management solutions.