UC2825DWTR

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UC2825DWTR

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 ~ 30V
Frequency - Switching 340kHz ~ 460kHz
Duty Cycle (Max) 80%
Synchronous Rectifier No
Clock Sync No
Control Features Current Limit, Enable, 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 UC2825DWTR is a dual-channel, voltage mode pulse-width modulation (PWM) controller designed for switch-mode power supplies (SMPS). It operates with a wide input voltage range, typically from 10V to 30V, making it suitable for various power applications. The device features a high-speed error amplifier, which allows for precise regulation of output voltage and current.
Key features include programmable switching frequency, soft-start capability, and dead-time control, enhancing efficiency and performance. It also supports both continuous and discontinuous modes of operation, providing flexibility for different load conditions. The UC2825DWTR incorporates protection features like over-voltage and under-voltage lockout, ensuring safe operation.
The controller is available in a 20-pin DIP package, making it easy to integrate into designs. Its versatility makes it ideal for applications such as DC-DC converters, battery chargers, and power inverters. Overall, the UC2825DWTR is a reliable choice for engineers seeking a robust PWM controller for various power management tasks.

Features

The UC2825DWTR is a high-performance, voltage mode PWM (Pulse Width Modulation) controller designed for power supply applications. Key features include:
1. Voltage Mode Control: Provides precise voltage regulation with minimal external components.
2. Integrated Error Amplifier: Features a high-gain error amplifier for accurate feedback and control.
3. Adjustable Frequency: Operates typically from 100 kHz to 500 kHz, allowing flexibility in design.
4. Soft Start: Includes a soft-start function to limit inrush current and prevent output overshoot during power-up.
5. Deadtime Control: Built-in deadtime control minimizes cross-conduction in the output stage, enhancing efficiency.
6. Overcurrent Protection: Features programmable current sensing for protection against overload conditions.
7. Thermal Shutdown: Includes thermal protection features to safeguard the device from overheating.
8. Low Standby Current: Designed to reduce power consumption in idle conditions.
These features make the UC2825DWTR suitable for a variety of applications, including DC-DC converters, adapters, and other power management systems.

Package

The UC2825DWTR is packaged in a 16-pin Dual In-Line Package (DIP) format with a body width of 0.300 inches. It is designed for surface mount applications.

Pinout

The UC2825DWTR is a voltage-mode PWM (Pulse Width Modulation) controller with a total of 16 pins. Here’s a brief overview of its pin functions:
1. VCC (Pin 1): Supply voltage input.
2. GND (Pin 2): Ground connection.
3. COMP (Pin 3): Compensation node for the error amplifier.
4. SS (Pin 4): Soft start input.
5. FB (Pin 5): Feedback input for voltage regulation.
6. RT (Pin 6): Timing resistor connection for frequency setting.
7. CT (Pin 7): Timing capacitor connection.
8. ISENSE (Pin 8): Current sense input.
9. OUT (Pin 9): Output driver for the power stage.
10. OC (Pin 10): Output control for current limiting.
11. CT (Pin 11): Control terminal for frequency modulation.
12. TRI (Pin 12): Triangle wave generator output.
13. CS (Pin 13): Current sense feedback.
14. RAMP (Pin 14): Ramp generator connection.
15. DIS (Pin 15): Discharge for the timing capacitor.
16. PGND (Pin 16): Power ground connection.
The UC2825DWTR is widely used in power supply applications for its efficient voltage regulation and control features.

Manufacturer

The UC2825DWTR is manufactured by Texas Instruments (TI), a prominent American technology company. Founded in 1930, Texas Instruments specializes in designing and manufacturing semiconductors and various integrated circuits. The company is well-known for its innovations in analog electronics, embedded processing, and digital signal processing. TI serves a wide range of industries, including automotive, industrial, communications, and consumer electronics, providing solutions that enhance device performance and efficiency. The UC2825DWTR itself is a PWM (Pulse Width Modulation) controller used in power management applications, highlighting TI's commitment to developing advanced electronic components for diverse applications.

Application

The UC2825DWTR is a PWM (Pulse Width Modulation) controller used in various applications, including switch-mode power supplies, DC-DC converters, and battery chargers. Its primary functions include voltage regulation, current limiting, and providing high-efficiency power conversion. It is commonly utilized in industrial power supplies, telecommunications, and consumer electronics for efficient energy management and improved power quality.

Equivalent

The UC2825DWTR is a dual-mode PWM controller. Equivalent products include the LM5021, UC3825, TL494, and MC34063. For specific design requirements, always verify the electrical characteristics and features to ensure compatibility.

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