UC2637NG4

Step Resolution:	--
Base Part Number:	UC2637
Supplier Device Package:	18-PDIP
Package / Case:	18-DIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	-25°C ~ 85°C (TA)
Voltage - Load:	--
Voltage - Supply:	2.5 V ~ 20 V
Current - Output:	--
Applications:	General Purpose
Series:	--
Technology:	--
Interface:	Parallel
Output Configuration:	Pre-Driver - Half Bridge (4)
Function:	Controller - Commutation, Direction Management
Motor Type - AC, DC:	Brushed DC
Motor Type - Stepper:	--
Part Status:	Active
Packaging:	Tube

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PMICs, Overview and Application Fields of UC2637NG4

Introduction

Power management integrated circuits (PMICs) are one of the most important components of modern electronic products and applications. They play a crucial role in providing the necessary power conversion between generic input sources and other components within an electronic system. PMICs are designed to provide power to an integrated circuit (IC) for it to operate perfectly and with maximum efficiency.UC2637NG4 is one of the most popular PMICs commonly used in motor driving applications and controllers. This PMIC is a single-channel, high-voltage, step-down (buck) DC/DC converter with a current mode control scheme. The device integrates most of the elements needed to build a high-performance regulated system, minimizing external components and minimizing cost and design time. Once fully implemented in an application, the device offers a wide range of advantages. It is versatile, providing a wide input range of 7V to 40V and an output current up to 5A, with a wide range of accuracy down to 0.2%. It features pulse-by-pulse current-limiting protection and operates in a wide range of temperatures from -40°C to 85°C.

Application Fields of UC2637NG4

UC2637NG4 has many application fields, the most common of which are: 1. Automotive Electronic Systems: UC2637NG4 is widely used in automotive electronic systems for controlling the motor and providing power to other vehicle components. It is known for its flexibility to adjust the output voltage and current levels to suit the application requirements. With its wide input range of 7V to 40V, the device can handle various levels of vehicle sources and its peak current mode control ensures precision in controlling the current levels. 2. Industrial and Home Control Systems: UC2637NG4 is commonly used in industrial and home control systems and appliances. It provides a reliable and accurate power to all components of these applications, as well as flexibility for voltage and current adjustments for different applications. The device can provide up to 5A of continuous output current, making it suitable for motor control applications without any compromise in performance.3. Security Systems: UC2637NG4 is often used in security systems such as biometric sensors and smart cards. In these applications, the device provides an accurate and reliable supply of power, making it a dependable component for system operation. The device also provides protection against short-circuits and noise immunity, making it suitable for a range of security applications.

Working Principle of UC2637NG4

UC2637NG4 operates by using an internal p-channel, low-side MOSFET switch that switches on and off in proportion to the switching frequency to regulate the output voltage. The regulator has current-mode control and a sample VCO circuit that maintains the current-mode control by setting the switching frequency.The device senses the current flowing in the switch to regulate the voltage level of the output current. The pulse-by-pulse current limiting protection limits the output current of the device in case of overloads, protecting against damage or malfunction. The device also features a shutdown mode for low-power consumption when not in use.

Conclusion

UC2637NG4 is one of the most popular PMICs for motor drivers and controllers. It is a single-channel, high-voltage, step-down DC/DC converter with current mode control and a wide range of voltage and current levels. The device is versatile and suitable for a wide range of applications, including automotive systems, industrial and home control systems, and security systems. It operates by using an internal p-channel MOSFET switch and a sample VCO circuit to regulate the output current, while offering protection against short-circuits and providing low-power consumption when not in use.

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