UC1825VTD1

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Mode PWM Controller
• Characteristics: High-performance, versatile, and efficient
• Package: Surface Mount Technology (SMT)
• Essence: Regulates and controls the output voltage of power supplies
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 10V to 20V
• Output Voltage Range: 0V to 15V
• Operating Temperature Range: -40°C to 85°C
• Switching Frequency: 100kHz to 500kHz
• Maximum Duty Cycle: 90%
• Supply Current: 5mA

Detailed Pin Configuration

The UC1825VTD1 has a total of 16 pins. Here is the detailed pin configuration:

1. VREF: Reference Voltage Input
2. COMP: Error Amplifier Output
3. FB: Feedback Input
4. RT/CT: Timing Components Connection
5. CT: Timing Capacitor Connection
6. RT: Timing Resistor Connection
7. GND: Ground
8. DTC: Dead Time Control
9. OSC: Oscillator Timing Capacitor Connection
10. SYNC: Synchronization Input
11. SS/TR: Soft Start/Shutdown Control
12. VCC: Supply Voltage Input
13. OUT: Output
14. NC: No Connection
15. NC: No Connection
16. NC: No Connection

Functional Features

• Voltage Mode Control: Provides precise regulation of output voltage
• Current Limiting: Protects the power supply from excessive current
• Soft Start: Gradually ramps up the output voltage during startup
• Shutdown Function: Allows for easy system shutdown and power saving
• Synchronization: Enables synchronization with an external clock signal

Advantages and Disadvantages

Advantages: - High-performance voltage regulation - Versatile and adaptable to various applications - Efficient power management - Robust protection features

Disadvantages: - Requires external timing components for operation - Limited input and output voltage ranges

Working Principles

The UC1825VTD1 is a voltage mode PWM controller that regulates the output voltage of power supplies. It operates by comparing the feedback voltage with a reference voltage and adjusting the duty cycle of the PWM signal accordingly. This control mechanism ensures precise voltage regulation and efficient power delivery.

Detailed Application Field Plans

The UC1825VTD1 finds extensive use in various applications, including: - Switching Power Supplies - DC-DC Converters - LED Lighting Systems - Motor Control Circuits - Battery Chargers

Detailed and Complete Alternative Models

Here are some alternative models that offer similar functionality to the UC1825VTD1: - UC3842 - TL494 - SG3525 - LT1241

These alternatives can be considered based on specific application requirements and design constraints.

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