PAM2421AECADJR Integrated Circuits (ICs)

Voltage - Output (Min/Fixed):	2.7V
Base Part Number:	PAM2421
Supplier Device Package:	8-SOP-EP
Package / Case:	8-SOIC (0.154", 3.90mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	520kHz
Current - Output:	3A (Switch)
Voltage - Output (Max):	24V
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	2.7V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The PAM2421AECADJR is a DC-DC buck converter designing to conduct power conversion in point of load. It is a highly integrated, low voltage, high efficiency buck converter. It features and ultra-fast dynamic response, and is designed to provide low output voltage ripple and low noise operation. It is a voltage regulator, and falls into the PMIC - Voltage Regulators - DC DC Switching Regulators group.

Features

The PAM2421AECADJR comes with a variety of features designed to make its use more convenient and efficient. The switching frequency is adjustable up to 1MHz, enabling it to operate in high frequency requirements. The device also comes with a wide input voltage range of 5.5V to 32V and can therefore work with a large number of different power sources. Additionally, it comes with an integrated synchronous PWM controller, a constant frequency current mode controller, an output power switch, an under voltage lockout, and an internal compensation network.

Application Field

The PAM2421AECADJR can be used in a wide range of applications including automotive, industrial, and consumer electronics. It has the potential to be used in a variety of power supply designs due to its wide input voltage range and high conversion efficiency. In automotive applications, it can provide a stable power supply for air conditioning and airbag systems. Additionally, it can be used for light intensity controllers, communications equipment, and product packing and labeling. In consumer electronics, it can be used in a variety of power supply designs such as DVD players, MP3 players, digital cameras, and portable computers.

Working Principle

To understand how the PAM2421AECADJR works, it is important to familiarize oneself with the basic working principles of buck converters. The basic principle of operation is twofold: power conversion and regulation. In power conversion, energy is converted from one form, such as voltage or current, to another form, such as voltage or current. Regulation is the process of maintaining the desired output voltage or current at the desired value. The PAM2421AECADJR uses a synchronous PWM (pulse width modulation) to control or regulate the output voltage. The PWM controller turns the output switch on and off in the switching cycle. In the on-state, the inductor stores energy, while during the switching cycle, the energy stored in the inductor is released and is used to power the load. The duration of the off-state is determined by the output feedback extracted from the output voltage. The PWM controller then adjusts the duty cycle to achieve the desired output voltage. The output voltage is then regulated through the feedback loop, and the process is repeated.

Conclusion

The PAM2421AECADJR is a highly integrated, low voltage and high efficiency buck converter designed to provide low output voltage ripple and low noise operation. It offers a wide input voltage range, adjustable switching frequency and integrated synchronous PWM controller making it suitable for a variety of DC-DC conversion applications. It can be used for automotive, industrial, and consumer electronics applications and is a valuable addition to the PMIC - Voltage Regulators - DC DC Switching Regulators range.

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