SG2524D

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Mode PWM Controller
• Characteristics: High-performance, versatile, and efficient
• Package: Dual-In-Line Package (DIP)
• Essence: Regulates and controls the pulse width modulation (PWM) signal for power converters
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Input Voltage Range: 8V to 40V
• Output Voltage Range: 5V to 35V
• Operating Temperature Range: -40°C to +85°C
• Frequency Range: 100Hz to 500kHz
• Maximum Duty Cycle: 50%
• Output Current: Up to 200mA

Detailed Pin Configuration

The SG2524D IC has a total of 16 pins. The pin configuration is as follows:

1. VREF: Reference voltage input
2. COMP: Error amplifier output
3. INV: Inverting input of the error amplifier
4. NONINV: Non-inverting input of the error amplifier
5. OSC: Oscillator timing capacitor connection
6. CT: Oscillator timing resistor connection
7. RT/CT: Oscillator timing resistor or capacitor connection
8. GND: Ground reference
9. VCC: Positive supply voltage
10. OUT: Output of the PWM controller
11. SYNC: Synchronization input
12. DISCH: Discharge pin for external timing capacitor
13. RT: Oscillator timing resistor connection
14. DTC: Dead time control input
15. SD: Shutdown control input
16. FB: Feedback input for voltage regulation

Functional Features

• Voltage Mode Control: Provides precise voltage regulation through PWM signal modulation
• Wide Input Voltage Range: Operates efficiently with input voltages ranging from 8V to 40V
• Adjustable Output Voltage: Allows for flexible output voltage selection between 5V and 35V
• High Efficiency: Optimized design ensures minimal power losses during conversion
• Protection Features: Incorporates overvoltage, undervoltage, and overcurrent protection mechanisms

Advantages and Disadvantages

Advantages: - Versatile and widely used in various power converter applications - High-performance characteristics ensure reliable operation - Efficient power conversion with low power losses - Protection features enhance system reliability

Disadvantages: - Limited maximum duty cycle of 50% - Requires external components for complete power converter implementation

Working Principles

The SG2524D operates based on the voltage mode control technique. It compares a reference voltage (VREF) with the feedback voltage (FB) to generate an error signal. This error signal is then amplified and used to modulate the PWM signal generated by the oscillator. The modulated PWM signal controls the duty cycle of the power converter, regulating the output voltage.

Detailed Application Field Plans

The SG2524D finds extensive application in various power converter circuits, including:

1. Switching Power Supplies
2. DC-DC Converters
3. Battery Chargers
4. Inverters
5. LED Drivers
6. Motor Control Circuits

Detailed and Complete Alternative Models

1. SG3524: Similar functionality with additional features like soft-start and shutdown control.
2. UC3842: Integrated circuit with similar voltage mode control for power converters.
3. TL494: PWM controller IC suitable for various power supply applications.

These alternative models offer similar functionality and can be considered as substitutes for the SG2524D depending on specific requirements.

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