ADP2311ACPZ-2-R7

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The ADP2311ACPZ-2-R7 is a synchronous step-down DC-DC switch mode voltage regulator designed to provide low output voltage in a wide range of applications. It utilizes a highly efficient, synchronous rectification with a nearly silent internal PWM controller to provide high power density and low ripple and noise.

The ADP2311ACPZ-2-R7 provides two independent outputs with an input voltage range of 2.7 Vdc to 5.5 Vdc and output voltage accuracy down to 0.850 Vdc. The device offers a low quiescent current, adjustable switching frequency up to 1.6 MHz, and adjustable output current range up to 2.82 A.

The ADP2311ACPZ-2-R7 is a dual output DC-DC regulator that uses an internal synchronous PWM controller for high efficiency and noise reduction. The adjustable switching frequency and output voltage allow for a great degree of flexibility in the design and optimization of the system.

The ADP2311ACPZ-2-R7 employs the built-in Power Path feature to provide the system with simultaneous output regulation and fault protection. This ensures that the system power is managed in a safe and efficient manner, regardless of the load type. The output current limit is adjustable for each output stage independently.

The ADP2311ACPZ-2-R7 also supports pin-selectable power-saving mode (PSM) and power-on reset (POR). The flexible PSM and POR options provide system designers with the ability to customize the power up sequence. The device includes onboard soft-start and over-temperature protection features.

The working principle of the ADP2311ACPZ-2-R7 is based on the synchronous switching regulator. It consists of two main parts, one is the internal synchronous PWM controller, and another is the internal transformer. Both work together to control an output load and adjust the output voltage. The PWM controller drives the high-side or low-side MOSFET switches to generate the synchronous rectified output voltage. In order to ensure the efficiency, the synchronous rectification is performed by both the high-side and low-side MOSFET switches alternatively.

The synchronous switch regulator of the ADP2311ACPZ-2-R7 is controlled by its internal PWM controller. The PWM controller can be instructed to operate at selected switching frequency and duty cycle. The feedback signal from the sense resistor is compared with the desired voltage level and modified as per requirement. The MOD input signal is also used to modify the duty cycle of the PWM signal, which helps to deliver the desired output voltage.

The ADP2311ACPZ-2-R7 is an ideal solution for point-of-load (POL) applications such as core processor and memory circuits, FPGAs and ASICs, RF transceivers, and telecom applications. It can also be used to power consumer and industrial electronics, automotive and battery operated systems. It is offered in a small 8-pin package and is RoHS and WEEE compliant.

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