UC2524AN

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: PWM Controller
• Characteristics: High-performance, versatile
• Package: DIP (Dual In-line Package)
• Essence: Regulates and controls the pulse width modulation (PWM) signal
• Packaging/Quantity: Available in tubes or reels, quantity varies based on supplier

Specifications

• Input Voltage Range: 8V to 40V
• Output Voltage Range: 0V to Vcc
• Maximum Duty Cycle: 100%
• Operating Temperature Range: -40°C to +85°C
• Frequency Range: 50Hz to 500kHz
• Output Current: Up to 200mA

Detailed Pin Configuration

1. Vref: Reference voltage input
2. Comp: Error amplifier output
3. Ipk: Peak current sense input
4. Isns+: Positive current sense input
5. Isns-: Negative current sense input
6. Gnd: Ground
7. Vcc: Power supply input
8. Ct: Timing capacitor connection
9. Rt: Timing resistor connection
10. Osc: Oscillator timing capacitor connection
11. Sync: Synchronization input
12. Rset: External resistor for setting reference voltage
13. Out: PWM output
14. Dis: Disable input

Functional Features

• High precision voltage reference
• Adjustable duty cycle
• Overcurrent protection
• Soft-start capability
• Synchronization with external clock
• Error amplifier for precise regulation

Advantages

• Wide input voltage range allows for versatile applications
• High efficiency due to PWM control
• Compact DIP package for easy integration
• Robust overcurrent protection ensures system safety
• Soft-start feature prevents inrush current

Disadvantages

• Limited output current capacity
• Requires external components for complete functionality
• Not suitable for high-frequency applications

Working Principles

The UC2524AN is a PWM controller that regulates the duty cycle of a PWM signal. It uses an internal voltage reference and error amplifier to compare the feedback voltage with the reference voltage, adjusting the duty cycle accordingly. The output PWM signal controls the power switch, allowing precise regulation of the output voltage.

Detailed Application Field Plans

• Power supplies: Used in various power supply designs, including DC-DC converters and battery chargers.
• Motor control: Enables efficient speed control in motor drives, such as fans, pumps, and robotics.
• Lighting systems: Facilitates dimming and brightness control in LED lighting applications.
• Audio amplifiers: Provides efficient power regulation in audio amplifier circuits.

Detailed and Complete Alternative Models

1. UC1524AN: Similar functionality, lower input voltage range (5V to 35V)
2. UC3824AN: Higher output current capacity (up to 500mA), wider temperature range (-55°C to +125°C)
3. TL494CN: Comparable features, different pin configuration (16-pin DIP)

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