LTC3255MPDD#PBF

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The LTC3255MPDD#PBF is a DC-DC switching regulator specifically designed for PMIC (Power Management IC) applications. This device offers a low quiescent current and very efficient switching for step-down, step-up and voltage-stabilizing actions. The LTC3255MPDD#PBF provides over-voltage and under-voltage shut-down, making it ideal for applications where tight voltage control is required.

The LTC3255MPDD#PBF contains an internally regulated high-efficiency, high-current step-down DC-DC switching regulator and a linear regulator. The switching regulator can convert input voltages from 3.3 V to 38 V to outputs as low as 0.6V at up to 3A with excellent ripple and noise suppression. The internal clock synchronizes to an external clock signal and provides a maximum switching frequency.

The LTC3255MPDD#PBF also offers protection features such as over-temperature, short-circuit, over-voltage and reverse-current protection. It is available in a compact 8-Pin Pb-Free Plastic Power Package (MSOP) and is fully RoHS compliant.

The LTC3255MPDD#PBF operates based on a variable pulse width modulation (PWM) control scheme. The regulator uses a variable frequency PWM control scheme where the frequency and duty cycle of the output voltage are proportional to the feedback control reference. The output voltage is regulated by comparing the feedback control voltage to an internal voltage reference and programming the output voltage with external components. The PWM comparator dynamically adjusts the duty cycle of the output waveform to maintain the output voltage at the desired level.

The LTC3255MPDD#PBF is capable of providing a low output voltage with high efficiency. Depending on the application, this device can provide up to 95% efficiency at light and medium load currents. In addition, it has a wide switching frequency range from 300 kHz to 1.2 MHz, allowing for high-speed system design.

The LTC3255MPDD#PBF also has a wide input voltage and output voltage range. It is capable of providing an output voltage from 0.6 V to 5.5 V, and can accept an input voltage from 3.3 V to 38 V. It is designed to perform well regardless of the line or load conditions, and provides excellent transient response.

The LTC3255MPDD#PBF is ideal for many DC-DC switching regulator applications such as portable and embedded systems, adjustable power supplies, digital power supplies, point-of-load power supplies, and post regulated supplies. It is also suitable for industrial and automotive applications.

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