ADP5024ACPZ-2-R7

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The ADP5024ACPZ-2-R7 from ADI is an advanced power management IC (PMIC). It’s a linear and switching regulator that is an optimum solution for powering portable electronics.

The device has a variety of operating and temperature capabilities, making it suitable for use in portable, cost and space constrained applications such as cellular phones, digital cameras, Computers and other handheld and embedded systems.

Overview

The ADP5024ACPZ-2-R7 is a highly integrated part that combines a low dropout (LDO) linear regulator, a single switch buck-boost regulator, and an integrated charge pump regulator. It supports a wide range of output voltages from 1.8 V to 6 V, and provides extremely precise control of the output voltage and current. The device can provide up to 2 A of output current and is designed to operate with input voltage as low as 1 V and up to 6V with a minimum of 1.5V dropout.

The ADP5024ACPZ-2-R7 also has a low quiescent current consumption and low dropout voltage, making it suitable for use in battery-powered applications such as cell phones and digital cameras.

Features and Benefits

The ADP5024ACPZ-2-R7 offers several benefits and features to the user, including:

• Precise Control of Output Voltage and Current – The device is designed to provide precise control of the output voltage and current up to 2A, enabling power supply designers to create highly efficient and reliable products.
• Low Shutdown Current – The device has a very low shutdown current, making it suitable for applications where long main battery working times are required
• Excellent Load Transient Response – The device is designed to provide an excellent load transient response and make highly stable power supplies.
• Small Size and Low Profile – The device is small and has a low profile, making it suitable for use in portable and space-constrained applications.

Applications

The ADP5024ACPZ-2-R7 is well suited for battery-powered applications requiring precise output voltage and current control, such as cellular phones, digital cameras, Portable devices and embedded systems. It can also be used in applications requiring low shutdown current such as wearable electronics, Machine vision and ambient light sensing. Additionally, the device can also be used in applications requiring excellent load transient response such as Zigbee Powered Node and Wireless Sensor Node.

Working Principle

The ADP5024ACPZ-2-R7 device consists of two independent networks, each consisting of an on-chip NPN transistor, a linear regulator and an efficiency improvement network. The on-chip NPN transistor is configured to serve as an active pull-up device for the linear regulator. The NPN device is Pulse Width Modulation (PWM) controlled, providing both current and voltage regulation. The PWM signal is generated using an on-chip oscillator to ensure minimum ripples on the output. The linear regulator consists of a low dropout (LDO), a current source, a resistor and a P-Channel MOSFET that controls the voltage and current.

The efficiency improvement network is integrated on-chip and comprises a 650 mW charge pump on the input side, a highly efficient switching boost regulator and peak current circuits on the output side. The charge pump provides a more efficient delivery of the input voltage to the boost regulator, allowing for higher current transfer and reducing the amount of heat generated by the device. The efficient switching boost regulator then steps up the current as needed, to provide higher output voltage and current. The device also contains on-board gate drivers to provide a smooth transitioning from one device to the other and to ensure minimal losses.

The device is designed to accurately control the output voltage and current within a programmed range, thanks to the low dropout and the current source integrated in the linear regulator. The current source provides a high degree of accuracy, providing a very low output voltage drop across the load and allowing the device to regulate a large range of current loads.

Conclusion

The ADP5024ACPZ-2-R7 is a power management IC designed for use in portable and embedded devices. The device is an advanced combination of a low dropout linear regulator, a single switch-buck boost regulator, and an integrated charge pump regulator, all capable of providing precise control of output voltage and current. The device is an excellent solution for those looking to create highly efficient and reliable products in battery-powered applications.

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