UC3825ADW

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UC3825ADW

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IC REG CTRLR MULT TOP 16SOIC

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Thông số kỹ thuật

thuộc tính Giá trị
Package Tube
ProductStatus Active
OutputType Transistor Driver
Function Step-Up, Step-Up/Step-Down
OutputConfiguration Positive
Topology Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull
NumberofOutputs 2
OutputPhases 1
Voltage-Supply(Vcc/Vdd) 8.4V ~ 22V
Frequency-Switching 400kHz ~ 1MHz
DutyCycle(Max) 50%
SynchronousRectifier No
ClockSync No
ControlFeatures Current Limit, Frequency Control, Ramp, Soft Start
OperatingTemperature 0°C ~ 70°C (TA)
MountingType Surface Mount
Package/Case 16-SOIC (0.295, 7.50mm Width)

Tổng quan

Description

The UC3825ADW is a high-performance pulse width modulation (PWM) controller designed for efficient power management in various applications, such as power supplies and converters. Manufactured by Texas Instruments, this device integrates several key features to optimize performance and reliability.
Key features of the UC3825ADW include high-speed dual-output drivers, each capable of sourcing or sinking 1.5 A of peak current, making it suitable for driving power MOSFETs. It operates over a wide input voltage range and includes an oscillator for adjustable frequency operation. The device also offers features such as soft-start, under-voltage lockout, and programmable dead time control to enhance system reliability and efficiency.
The UC3825ADW is packaged in a wide-body SOIC-16 (Small Outline Integrated Circuit) format, providing ease of integration into various designs. Its robust design and comprehensive feature set make it ideal for use in industrial, automotive, and telecommunications applications where precise control of power delivery is critical.

Equivalent

The UC3825ADW is a high-performance PWM controller. Equivalent or similar products include:
1. UC3825DW - Another package variant with similar specifications.
2. UC3825N - DIP package version of the same controller.
3. UC2825A - Lower temperature rating variant.
4. LM5025 - Offers similar functionality with integrated high-side and low-side drivers.
5. SG3525A - Another PWM controller with comparable features.
6. TL494 - A widely used PWM controller with similar applications.
Always check datasheets for compatibility regarding specific circuit requirements.

Features

The UC3825ADW is a high-performance PWM controller designed for power supply applications. Key features include:
1. High-Speed Operation: Capable of handling high-frequency switching applications, making it suitable for modern power supplies.
2. Precision Reference: It includes a precise 5V reference voltage, ensuring stable operation and accurate feedback control.
3. Current-Mode Control: Offers improved transient response and simplified loop compensation.
4. Programmable Oscillator: Allows flexibility in setting the switching frequency to match specific application needs.
5. Dual Output Stages: Features dual totem-pole outputs, providing high current drive capability for power MOSFETs or IGBTs.
6. Soft Start Capability: Includes an adjustable soft start feature to prevent inrush current during startup.
7. Undervoltage Lockout (UVLO): Protects the system by keeping the device in a reset state until the input voltage reaches a specified threshold.
8. Low Start-Up Current: Minimizes power loss during initial power-up.
9. Wide Supply Voltage Range: Compatible with various supply voltages, enhancing versatility in different applications.
These features make the UC3825ADW ideal for efficient and reliable power supply design.

Pinout

The UC3825ADW is a high-performance current-mode PWM controller designed for use in switch-mode power supplies. It is commonly used for efficient energy conversion in various applications. The device is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package.
Here is a brief overview of the pin functions:
1. RT: Timing resistor input.
2. CT: Timing capacitor input.
3. RAMP: Ramp input.
4. CS: Current sense input.
5. RS: Reference voltage sense.
6. EA−: Inverting input of the error amplifier.
7. EA+: Non-inverting input of the error amplifier.
8. COMP: Compensation/feedback.
9. VREF: Reference voltage output.
10. VCC: Supply voltage input.
11. OUTA: Output A.
12. PGND: Power ground.
13. OUTB: Output B.
14. AGND: Analog ground.
15. SYNC: Synchronization input.
16. DUTY: Maximum duty cycle adjust.
These pins allow the UC3825ADW to manage and control power supply functions effectively, ensuring stability and efficiency in power management applications.

Manufacturer

The UC3825ADW is a product manufactured by Texas Instruments. Texas Instruments is a well-known American technology company that designs and manufactures semiconductors and various integrated circuits. Their products are used in a wide range of electronic applications, including industrial, automotive, consumer electronics, and communication devices. The company is recognized for its innovation in the field of analog and embedded processing products.

Application

The UC3825ADW is a high-performance, current-mode PWM controller used primarily in power electronics applications. Its key application areas include:
1. Switching Power Supplies: Used in power supply units for computers and other electronic devices.
2. DC-DC Converters: Facilitates efficient voltage conversion in various electronic applications.
3. Motor Control: Employed in brushless DC motor controllers for precise speed regulation.
4. Battery Chargers: Utilized in optimizing charging cycles for lithium-ion and other battery types.
5. Inverters: Supports inverter designs for solar power systems and uninterruptible power supplies (UPS).
Its robust design and high-frequency operation make it suitable for these demanding applications.

Package

The UC3825ADW is typically available in a surface-mount SOIC (Small Outline Integrated Circuit) package with 20 pins, specifically the SOIC-20 wide body package. This package is designed for efficient thermal performance and ease of use in various electronic applications.

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