LTC3622IDE-2#PBF

The LTC3622IDE-2#PBF is a high-efficiency step-down voltage regulator that is within the PMIC (Power Management ICs) – Voltage Regulators – DC DC Switching Regulators product family. It is equipped with an internal switch with a maximum limit of 2.0A, which allows it to easily handle varying loads without significant performance losses.

This device is specifically designed to provide high-efficiency, yet cost-effective, voltage conversion from higher to lower voltage through an integrated inductor. As it is most suitable for either battery-operated or power-limited applications, it is often used for mobile devices such as portable wireless computing devices and other battery-operated devices.

Features of LTC3622IDE-2#PBF

The LTC3622IDE-2#PBF integrates the positive and negative switches, a high-efficiency synchronous step-down regulator, low on-board component count, low quiescent current and an input voltage range from 2.5V to 7V.

The device also provides a power-saving pulse-skipping mode to reduce the total power consumption during light load applications.

Applications of LTC3622IDE-2#PBF

The LTC3622IDE-2#PBF offers an ideal solution for applications that require a low-cost, low-power isolated solution with the ability to handle both steady-state and dynamic load variations. As it contains a low-cost and low-quiescent current synchronous step-down converter, it is ideal for applications such as battery-operated wireless devices, power amplifiers, as well as smartphone battery chargers.

Working Principle of LTC3622IDE-2#PBF

The LTC3622IDE-2#PBF operates through a synchronous buck controller and a 600V NMOS power switch capable of providing 2A of continuous output current.

The internal synchronous buck controller includes two main parts; the error amplifier and the current-mode control circuitry. The error amplifier compares the output voltage to the reference voltage set by the external voltage divider and generates a corresponding feedback voltage. This feedback voltage is then used by the current-mode control circuitry to drive the power switch accordingly. The power switch then carries the power from the input to the output.

The internal P-Channel MOSFET then regulates the output voltage from the voltage that is too high. This helps in maintaining the desired output voltage. The device then automatically switches to the power-saving, pulse-skipping mode during light-load applications to conserve the power.

Conclusion

The LTC3622IDE-2#PBF is a DC/DC switching regulator that is specifically designed to provide high-efficiency, yet cost-effective, voltage conversion from higher to lower voltage. It is most suitable for either battery-operated or power-limited applications, and it is ideal for applications such as battery-operated wireless devices, power amplifiers, as well as smartphone battery chargers.

The device features an internal switch with a maximum limit of 2.0A which allows it to handle varying loads without significant performance losses, an input voltage range from 2.5V to 7V, as well as a power-saving pulse-skipping mode to reduce the total power consumption during light load applications.