LTC1539IGW#TRPBF

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The LTC1539IGW#TRPBF belongs to the family of PMIC - Voltage Regulators - DC DC Switching Controllers. It is designed to let you generate a high-efficiency, compact, and cost-effective DC/DC power supply solution. It produces low ripple power converters by using one inductor and easily tailored inductor, capacitor and transformer combinations.

The LTC1539IGW#TRPBF is a single-channel, current-mode controller featuring an internal bias regulator, internally trimmable reference voltage and 250 kHz to 500 kHz frequency range. It runs at the user-selected frequency with a minimum of external components.

Key features of the LTC1539IGW#TRPBF include wide 4.75 V to 38 V input voltage range, output voltage range up to 24 V, up to 3 A output current, 0.5% reference and 5 mV voltage setpoint accuracy, 0.5% maximum output voltage ripple, synchronizable from 100 kHz to 500 kHz, current-mode control with algebraic current limit, programmable 0 V to 80 V soft start, voltage feed forward and true current limit, high power supply rejection ratio, over temperature protection, short circuit protection, and spread spectrum frequency modulation.

The LTC1539IGW#TRPBF is well suited for industrial, automotive, point-of-load, high efficiency DC/DC converters, and telecom power supplies. Its high efficiency and ease of operation make it ideal for applications such as server power supplies, LED drivers, and in high voltage networking systems.

The LTC1539IGW#TRPBF works by turning on a pass transistor to charge an inductor and dump energy into the output capacitor. It is a non-synchronous buck controller that switches a single pass transistor to step down an input voltage. It features a current-mode control architecture to provide excellent line and load regulation under light load levels.

When the voltage across the pass transistor exceeds the reference voltage, an internal comparator shuts off the pass transistor and discharges the inductor into the output capacitor via a flyback diode. By controlling the ON time of the pass transistor, the voltage on the output capacitor can be maintained. The device is also capable of delivering up to 3 A of output current and has a total output power rating up to 72 W.

The LTC1539IGW#TRPBF is designed for high efficiency linear power supplies, DC/DC converters, and other high voltage powering circuits. It offers high efficiency and low cost operation using a minimal amount of external components.

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