Frequency - Switching:	100Hz ~ 400kHz
Base Part Number:	SG3525A
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.295", 7.50mm Width)
Operating Temperature:	0°C ~ 70°C (TA)
Control Features:	Enable, Frequency Control, Soft Start
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	Yes
Duty Cycle (Max):	49%
Series:	--
Voltage - Supply (Vcc/Vdd):	8 V ~ 35 V
Output Phases:	1
Number of Outputs:	2
Topology:	Push-Pull
Output Configuration:	Positive
Function:	Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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SG3525ADWR2 Application Field and Working Principle

Introduction

The SG3525ADWR2 is a dual channel power management integrated circuit (PMIC) designed to provide voltage regulation, current regulation, and protection for portable devices. The SG3525ADWR2 is an integrated power management platform that is widely used in a variety of applications, including regulators for portable batteries and motors, power converters for lighting circuits, and switching controllers for DC-DC converters. This IC supports a wide range of applications and offers some of the most advanced features available in the industry, including a temperature-compensated frequency control, feedback loop compensation, and over current protection.

Application Field

The ability to operate in a wide range of applications makes the SG3525ADWR2 an attractive choice for portable applications. As a DC-DC switching controller, the SG3525ADWR2 is ideal for use in a variety of switch mode regulators, including buck, boost, buck-boost and flyback converters. These regulators can be used to regulate power supply and battery output levels, to provide variable output voltage and current levels, or to adjust output characteristics over a wide range of operating conditions.The SG3525ADWR2 can also be used in AC or DC motor control applications, where the user needs to regulate or adjust the speed or torque of the motor. The IC provides variable pulse width modulation (PWM) to control the speed and torque of motors, and can be used with power stages and regulators to further improve the performance and reliability of the system. In addition, the IC has built-in fault protection features, including over-current and over-voltage detection, as well as temperature sensing, to protect the outputs from damage in the event of fault conditions.The SG3525ADWR2 can also be used in lighting and power management applications. The switching controller can be used to provide variable output voltage or current level and switch frequency, allowing designers to fine-tune the output characteristics of their system. In addition, the IC is capable of providing over-current protection and temperature monitoring for improved safety and performance.

Working Principle

The SG3525ADWR2 is a dual channel power management integrated circuit that features an array of features and capabilities to support a variety of applications in the realm of regulators, motor control, and lighting and power management. The main principle behind the SG3525ADWR2 is to provide efficient and reliable power conversion for a wide range of applications, including DC-DC switching controllers, regulators, and motor control.The SG3525ADWR2 utilizes a voltage-mode PWM control method which consists of two closed loop circuits, the current (I) loop and the voltage (V) loop. The current loop is responsible for detecting the output current and providing a feedback signal to the PWM comparator. The voltage loop is responsible for detecting the output voltage and providing a signal to the PWM comparator. The comparator then uses the signal from the voltage loop to generate the PWM output signal, which is then used to control the output voltage.The SG3525ADWR2 also features a patented temperature-compensated frequency control, which compensates the switching frequency to suit changing temperature conditions. This means that the frequency of the switching signal is kept stable across a wide temperature range, ensuring the circuit remains stable even in extreme conditions.The SG3525ADWR2 also features an over-current protection and temperature monitoring circuit, which automatically shuts down the system in the event of an over-current or over-temperature conditions, ensuring safety and reliability of the power supply.

Conclusion

The SG3525ADWR2 is an advanced and versatile integrated power management IC that can be used for a variety of applications, including regulators, motor control, and lighting and power management. The IC features a range of advanced features, such as voltage mode PWM control, over-current and over-temperature protection, and a temperature-compensated frequency control, making it suitable for use in a variety of applications.

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