LM2735YMF

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The LM2735YMF is a DC/DC switching regulator that belongs to the power management integrated circuit (PMIC) family. This PMIC offers a compact and efficient solution for a variety of modern applications, from a simple power supply to complex power control applications including multi-rail and complex sequencing tasks. Its primary benefit is its ability to provide a reliable and accurate output voltage for an extended period of time. For this reason, it is an ideal choice for a variety of applications, ranging from medical equipment to computers, televisions, and office equipment

The LM2735YMF is a fixed frequency buck converter that can operate over an input voltage range of 2.7V to 24V. It has an adjustable output voltage range of 0.8V to 14V. Its main features include a fixed frequency of 400kHz, high efficiency, integrated internal current limit and programmable soft-start. An under-voltage lockout (UVLO) circuit is built-into the regulator to prevent it from operating under potentially damaging conditions. Hyper light-load detection provides a small quiescent current when the load is extremely light, while active current-sharing enables multiple outputs to work together in parallel.

The LM2735YMF comes in several versions that vary in output current and number of outputs. The versions range from a single output up to four outputs, with an output current of up to 6A for each output. Internal compensation provides for easy setup, loop stability, and good noise immunity. The IC also offers an integrated power-OK indicator output, which can be used to indicate the presence of an output voltage.

The working principle of the LM2735YMF is based on the buck converter design. The IC works in two different modes: a continuous mode and a forced pulse-width modulation (PWM) mode. In continuous mode, an internal comparator is used to adjust the duty cycle of the output bridge switch in order to maintain the output voltage. In PWM mode, the comparator is disabled and an external control signal is used to vary the duty cycle of the output. In both modes, a feedback loop is used to control the output voltage.

When the device is in its continuous mode, the output voltage is determined by the feedback loop and the voltage applied to the feedback pins. The pulses sent to the bridge switch are compared with the voltage applied to the feedback pin and adjusted accordingly. When the device is in PWM mode, its duty cycle is controlled by the signal applied to its input. Once the pulse-width has been adjusted, the output voltage is regulated automatically.

The LM2735YMF is a reliable and efficient PMIC, offering a high degree of control over the output voltage. Its varied features mean it can be used in a broad range of applications, offering a solution for a range of power supply needs. Its high current output capabilities, low quiescent current, and high efficiency make the LM2735YMF an ideal choice for compact and efficient power management.

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