UC3825BDWG4

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The UC3825BDWG4 is an integrated circuit that is well-fit for high frequency switched power supplies. This high voltage integrated circuit can be used in a variety of applications such as AC/DC converters, OLEDs, LCDs, and others. It is ideal for offline switchers due to its good noise immunity performance, low power dissipation and reliable operation. The UC3825BDWG4 is an excellent choice for power supplies and synchronous rectification applications.

Features:

• Gate pin drivers for MOSFET on-state resistance (R_DS(on)) control
• Auto-off mode at maximum load (current limitation)
• Adjustable single- to dual-phase operating frequency
• Soft start for current-limited operation
• Total harmonic distortion (THD) up to 60dB
• Line undervoltage lockout (UVLO) and overtemperature protection (OTP) with hysteresis
• Flexible fault protection with single compact chip module

Application Fields:

The UC3825BDWG4 is useful in a diverse range of applications, such as AC/DC converters, off-line switchers, and switch-mode power supplies. There are three main types of applications: primary-side regulation, digital power supplies, and multi-phase synchronous rectification (SR).

Primary-side Regulation:

Primary-side regulation is a simple, cost-effective, and efficient approach for AC-DC converters. The UC3825BDWG4 is the ideal solution for this kind of application. It is designed to provide high accuracy and fast response time, which is necessary for any primary-side regulation solution.

Digital Power Supplies:

Digital power supplies require precise and stable current regulation to support processor and integrated graphics controllers. The UC3825BDWG4 is an excellent choice for these kinds of applications due to its programming capability and unique design. It is highly efficient, with a low power dissipation and excellent THD performance even at higher loads.

Multi-phase Synchronous Rectification (SR):

The UC3825BDWG4 is well suited for multi-phase synchronous rectification (SR) applications. It offers the flexibility of a single- to dual-phase operating frequency with adjustable gate pin drivers for MOSFET on-state resistance (R_DS(on)) control. It features a soft start for current-limited operation and offers line undervoltage lockout and overtemperature protection with hysteresis, thus providing a reliable solution for such applications.

Working Principle:

The UC3825BDWG4 is an integrated circuit that is comprised of several components. It utilizes Pulse Width Modulation (PWM) to regulate the switching cycle and maintain a consistent output voltage. The UC3825BDWG4 is designed to operate with a wide variety of power sources, such as AC mains, or DC sources.

The UC3825BDWG4 is designed to provide a high-efficiency solution for AC/DC converters. It integrates eight full MOSFET gate drivers to provide low on-state resistance (R_DS(on)) control for high-frequency switching. The UC3825BDWG4 also features adjustable soft-start for current-limited operation, adjustable frequency, and line undervoltage lockout (UVLO) and overtemperature protection (OTP) with hysteresis.

The UC3825BDWG4 is a reliable, efficient integrated circuit that can be used in a variety of applications, such as AC/DC converters, off-line switchers, and switch-mode power supplies. The combination of features and components make it an excellent choice for any of these applications.

The specific data is subject to PDF, and the above content is for reference