LM5145RGYR

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The LM5145RGYR PMIC - Voltage Regulator - DC DC Switching Controller is a robust, reliable, high-frequency controller for synchronous buck regulators. It integrates current-mode control for superior line and load-transient response, many features to reduce external component count and a low-side gate driver. Protection features includes over-voltage protection, under-voltage lock-out, short-circuit protection, over-current protection and over-temperature protection. The device is adjustable from a 1.2V to 600V and is capable of handling input voltages up to 600V.

The LM5145RGYR PMIC - Voltage Regulator - DC DC Switching Controller utilizes an on-chip oscillator and PWM comparator to provide accurate current-mode control. It uses a bootstrap power supply to generate an 8-bit feedback voltage to the PWM comparator. The switching frequency can be programmed using an external resistor and the pulse width is controlled using an external voltage or current reference. The pulse width is automatically adjusted to maintain the output voltage constant over a wide range of line and load conditions. The controller also features a low-side gate driver with programmable soft-start, pre-biased outputs and adjustable turn-on delay.

The LM5145RGYR PMIC - Voltage Regulator - DC DC Switching Controller includes a low-impedance output voltage reference which can be used to accurately set the output voltage. The device also includes a low-side gate driver for driving an external FET switch which improves efficiency and reduces power dissipation.

The LM5145RGYR PMIC - Voltage Regulator - DC DC Switching Controller also uses a unique overvoltage protection feature that is configured using external components. This feature is activated when the output voltage exceeds an externally-programmed threshold. The device also includes over-current protection, under-voltage protection, short-circuit protection and over-temperature protection, all of which are programmable using external components.

In conclusion, the LM5145RGYR PMIC - Voltage Regulator - DC DC Switching Controller is an excellent choice for providing accurate and reliable voltage regulation for both AC and DC applications. It offers many features to reduce external component count and a low-side gate driver for improved efficiency and reduced power dissipation. Its overvoltage protection, over-current protection, under-voltage protection, short-circuit protection and over and over-temperature protection provide robust protection while maintaining accurate and reliable voltage regulation.

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