UC2825ADW

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UC2825ADW

IC REG CTRLR MULT TOP 16SOIC

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規格

Part Status Active
Output Type Transistor Driver
Function Step-Up, Step-Up/Step-Down
Output Configuration Positive
Topology Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull
Number of Outputs 2
Output Phases 1
Voltage - Supply (Vcc/Vdd) 8.4V ~ 22V
Frequency - Switching 400kHz ~ 1MHz
Duty Cycle (Max) 50%
Synchronous Rectifier No
Clock Sync No
Control Features Current Limit, Frequency Control, Ramp, Soft Start
Operating Temperature -40°C ~ 85°C (TA)
Mounting Type Surface Mount
Package / Case 16-SOIC (0.295", 7.50mm Width)
Supplier Device Package 16-SOIC
Base Product Number UC2825

概述

Description

The UC2825ADW is a high-performance integrated circuit designed for off-line and DC-DC converter applications. It is a part of the UC282x family, which is known for its current mode control, making it suitable for power supply designs requiring precise regulation and efficiency. The device features integrated PWM (Pulse Width Modulation) control, providing inherent protection mechanisms such as overcurrent, undervoltage lockout, and a soft-start function to prevent inrush current.
Key specifications include a wide supply voltage range, typically from 10V to 30V, and a high-frequency operation capability up to 500 kHz. It includes features like a voltage reference, error amplifier, and adjustable dead time, allowing designers to optimize performance for various applications such as step-down (buck) converters, step-up (boost) converters, and other power management systems.
The UC2825ADW is packaged in a durable 16-pin dual in-line package (DIP), making it easy to integrate into various circuit designs. Its robust performance and versatility make it a popular choice among engineers in power electronics.

Features

The UC2825ADW is a versatile PWM (Pulse Width Modulation) controller designed for use in power supply applications. Key features include:
1. Voltage Mode Control: Supports voltage mode control for precise regulation.
2. Dual Output: Provides dual outputs for driving power switches in various topologies.
3. High Efficiency: Designed for high efficiency, making it suitable for low-power applications.
4. Adjustable Frequency: Offers adjustable switching frequency, typically between 100 kHz and 500 kHz, allowing for flexibility in design.
5. Soft Start Function: Includes a soft start feature to minimize inrush current during power-up.
6. Current Limiting: Integrated current limiting to protect against overcurrent conditions.
7. Thermal Shutdown: Incorporates thermal shutdown protection to prevent overheating.
8. User-Friendly: Easy to implement with minimal external components required.
9. Wide Voltage Range: Operates from a wide input voltage range, enhancing its versatility.
Overall, the UC2825ADW is ideal for designing efficient power supplies in various applications, including DC-DC converters and battery chargers.

Package

The UC2825ADW is packaged in a Dual In-line Package (DIP) format, specifically a 14-pin DIP. This type of package is designed for through-hole mounting on printed circuit boards.

Pinout

The UC2825ADW is a versatile pulse-width modulation (PWM) controller commonly used in power supply applications. It features a 28-pin Dual In-line Package (DIP).
Pin Count: 28 pins
Key Functions:
1. PWM Control: Generates a PWM signal for controlling power devices.
2. Voltage Regulation: Provides feedback for maintaining output voltage.
3. Current Sensing: Monitors output current for overload protection.
4. Dead-Time Control: Allows for control of switching times between high and low outputs.
5. Soft Start: Facilitates a gradual increase in output voltage during startup.
6. Error Amplifier: Compares the output voltage to a reference voltage for regulation.
7. Sync Capability: Can synchronize with other devices for multiple output stages.
Additional features include built-in protection mechanisms and the ability to drive multiple output stages effectively. The UC2825ADW is widely utilized in switch-mode power supplies, converters, and other power management applications.

Manufacturer

The UC2825ADW is manufactured by Texas Instruments (TI), a leading American technology company. Texas Instruments specializes in designing and manufacturing semiconductors and various integrated circuits. Founded in 1930, the company has a long history of innovation in electronics, particularly in analog and digital signal processing. TI is known for its diverse range of products, including microcontrollers, digital signal processors, and power management solutions, serving various industries such as consumer electronics, automotive, industrial, and telecommunications. The UC2825ADW itself is a PWM (Pulse Width Modulation) controller commonly used in power supply applications.

Application

The UC2825ADW is a high-performance PWM controller used in various applications, including switched-mode power supplies (SMPS), DC-DC converters, and power management systems. It is suitable for both isolated and non-isolated configurations, enabling efficient voltage regulation in computer power supplies, battery chargers, and industrial equipment. Its features support synchronous rectification, allowing for improved efficiency in power conversion.

Equivalent

The UC2825ADW is a PWM controller used in power supply applications. Equivalent products include the TL494, SG3525, and UC3842. These chips share similar functionalities, but specific features and pin configurations may vary, so it's essential to consult datasheets for compatibility.

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