Current - Output:	200mA, 200mA
Base Part Number:	ADP221
Supplier Device Package:	6-WLCSP (1.45x0.95)
Package / Case:	6-WFBGA, WLCSP
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	--
Current - Supply (Max):	220µA
Current - Quiescent (Iq):	120µA
Series:	--
Voltage Dropout (Max):	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.8V, 1.8V
Voltage - Input (Max):	5.5V
Number of Regulators:	2
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

The ADP221ACBZ-1818-R7 is a step-down, linear voltage regulator module designed to provide smooth and consistent output voltage to a wide range of applications. This type of regulator has been developed with a wide range of output voltage, current, switching frequency, and other parameters to cater for various application requirements. It is typically used to supply power to devices or systems with a wide range of operating voltages.

Application Field and Working Principle

The ADP221ACBZ-1818-R7 is a step-down, linear voltage regulator typically used for power applications. It is designed to supply a regulated output voltage across a wide range of input voltage. Its output voltage is set by a control loop that responds to changes in the output voltage, allowing for a fine-tuned and steady output voltage. The linear voltage regulator operates on a fundamental principle. Initially, a voltage divider is used to set the required output voltage. The internal comparator then compares the actual output voltage to the set voltage. If the output voltage is below the set voltage, then the pass device is turned, resulting in increased current flowing through the divider and raising the output voltage.The circuit also has built-in protection features, such as overvoltage, undervoltage and overcurrent protection circuits. These protection circuits help protect the device from high voltages, low voltages, and current overload situations, providing safe and reliable operation. The ADP221ACBZ-1818-R7 is designed to supply a wide range of devices and systems, including automotive systems and industrial controls, telecommunication systems and instrumentation equipment, non-volatile memory, microcontrollers and other digital equipment.

Benefits and Advantages

The ADP221ACBZ-1818-R7 has a range of benefits and advantages, making it a great choice for a wide range of applications. Firstly, it can be used in both high and low-voltage applications, meaning that it can do more with just one component. It is also very efficient, and can provide up to 92% efficiency at light boundary load.This device also comes with an adjustable switching frequency, allowing it to be tuned for applications that require very low noise outputs and improved EMI performance. Additionally, it features excellent thermal performance, with a low thermal resistance, high power dissipation and low temperature rise.Finally, the ADP221ACBZ-1818-R7 has very low output voltage ripple, ensuring clean and stable output voltage. This stable voltage is ideal for applications where small changes in voltage can cause errors or malfunctions, such as microcontrollers and instrumentation systems.

Conclusion

In conclusion, the ADP221ACBZ-1818-R7 is an excellent choice for applications that require a reliable, efficient and low noise linear voltage regulator. It is designed to provide a high level of protection and performance, while also offering adjustable switching frequency and excellent thermal performance. As a result, it is well suited to a range of applications, including automotive systems, telecommunication systems and microcontroller related applications.

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