ADP2387ACPZN-R7 Integrated Circuits (ICs)

Voltage - Output (Min/Fixed):	0.6V
Base Part Number:	ADP2387
Supplier Device Package:	24-LFCSP-WQ (4x4)
Package / Case:	24-WFQFN Exposed Pad, CSP
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	200kHz ~ 1.4MHz
Current - Output:	6A
Voltage - Output (Max):	18V
Series:	--
Voltage - Input (Max):	20V
Voltage - Input (Min):	4.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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ADP2387ACPZN-R7: Application Field and Working Principle

The ADP2387ACPZN-R7 is a programmable high-efficiency, multiphase step-down switching regulator designed for high-performance processor and memory supplies. It is part of Analog Devices\' range of PMIC (Power Management IC) voltage regulators, which includes DC-DC switching regulators. Its features include: * Low quiescent current of 1.4 μA in light-load and Sleep mode, for better efficiency* High-precision voltage control and a wide output voltage range* Up to 4-phase operation for greater power stability* Ability to be programmed with simple and intuitive EEPROM interface

Application Field

The ADP2387ACPZN-R7 is well-suited for use in mobile devices such as smartphones, tablets and notebooks, as well as other applications such as automotive, industrial and medical systems. It offers low-power performance, reliable voltage regulation and scalability to meet the needs of a wide range of applications.The ADP2387ACPZN-R7 is able to provide power to the processor and memory in synchronous buck topologies, allowing for higher efficiency and better power integrity. The low quiescent current of the part means lower power consumption during light load and Sleep mode operations. In addition, the regulator features a power good flag and power-on delay, allowing for precise power sequencing.The ADP2387ACPZN-R7 offers a distinct advantage for high-performance processor cores that require a wide range of core voltage. It features an external voltage reference allowing for an extended output voltage range of 0.6V to 5V, reducing power losses and allowing for better thermal control.

Working Principle

The ADP2387ACPZN-R7 operates as a switched-mode power supply, using a combination of controlling signals to regulate the output voltage. The basic operation of the switching regulator is as follows: * The regulator switches between two separate states, On and Off. When the regulator is in the On-state, current flows from the input to the output, forming a loop. * During the On-state, the regulator monitors the output voltage and adjusts its control signals to ensure that the output voltage remains constant. * When the regulator is in the Off-state, the loop is broken and no current flows from the input to the output. * This switching action is what enables the regulator to regulate the output voltage. When the regulator is in the Off-state, energy stored in the input capacitors is discharged into the output, maintaining the output voltage. The amount of energy stored and discharged is determined by the regulator\'s control signals and is what enables the regulator to regulate the output voltage.To ensure that the regulator maintains the desired output voltage, the control signals must be set to the correct values. The regulator\'s EEPROM interface allows for configuration of various parameters such as the output voltage, loop compensation and power-on delay that can be used to set the control signals to the desired values. The ADP2387ACPZN-R7 also features an internal digital joystick for fine tuning the output voltage and load-line calibration. The joystick feature allows for quick and easy Real-Time Clock voltage tuning through simple commands.

Conclusion

The ADP2387ACPZN-R7 is a high-performance, multiphase step-down switching regulator from Analog Devices\' range of PMIC voltage regulators. It is well-suited for use in mobile devices, as well as in automotive, industrial and medical systems, thanks to its low-power performance, reliable voltage regulation and scalability. It features a wide output voltage range with an external voltage reference, low quiescent current, Power Good flag and power-on delay, as well as an internal digital joystick for fine tuning the output voltage and load-line calibration.

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