SG3526BN

Product Overview

• Category: Integrated Circuit (IC)
• Use: PWM Controller
• Characteristics: High-performance, versatile, and efficient
• Package: DIP-16 (Dual In-line Package with 16 pins)
• Essence: Regulates the pulse width modulation (PWM) signal
• Packaging/Quantity: Available in reels or tubes, quantity varies based on supplier

Specifications

• Input Voltage: 8V to 35V
• Output Voltage: 5V to 35V
• Operating Temperature: -40°C to +85°C
• Frequency Range: 100Hz to 500kHz
• Duty Cycle: Up to 50%
• Output Current: Up to 200mA
• Protection Features: Overcurrent, overvoltage, and thermal shutdown

Pin Configuration

The SG3526BN IC has a total of 16 pins. The pin configuration is as follows:

1. COMP
2. RT/CT
3. CT
4. VREF
5. OSC OUT
6. OSC IN
7. GND
8. SYNC
9. VCC
10. OUTPUT
11. DISCHARGE
12. DEAD TIME
13. CURRENT SENSE
14. ERROR AMP INPUT
15. SHUTDOWN
16. FEEDBACK

Functional Features

• High Precision: Provides accurate and stable PWM signal generation.
• Wide Input Voltage Range: Can operate within a wide range of input voltages.
• Flexible Frequency Control: Allows adjustment of the PWM frequency according to requirements.
• Efficient Power Conversion: Enables efficient power conversion by regulating the duty cycle.
• Protection Mechanisms: Incorporates various protection features to safeguard against faults.

Advantages and Disadvantages

Advantages: - Versatile and widely used in various applications. - High-performance and reliable operation. - Offers precise control over power conversion.

Disadvantages: - Requires external components for complete functionality. - Limited output current capacity.

Working Principles

The SG3526BN is a pulse width modulation (PWM) controller IC that regulates the duty cycle of the PWM signal. It operates by comparing a reference voltage with a sawtooth waveform generated internally or externally. Based on this comparison, it adjusts the output pulse width to achieve the desired power conversion.

The IC incorporates an error amplifier, oscillator, and other essential circuitry to ensure accurate and stable PWM signal generation. It also includes protection mechanisms such as overcurrent, overvoltage, and thermal shutdown to prevent damage to the system.

Detailed Application Field Plans

The SG3526BN finds extensive use in various applications, including:

1. Power Supplies: Used in switch-mode power supplies to regulate the output voltage efficiently.
2. Motor Control: Employed in motor speed control circuits to adjust the motor's speed and direction.
3. Inverters: Utilized in inverter circuits to convert DC power into AC power with adjustable frequency and voltage.
4. Battery Chargers: Integrated into battery charging circuits to control the charging process effectively.
5. LED Lighting: Applied in LED driver circuits to regulate the brightness of LEDs.

Detailed and Complete Alternative Models

1. SG3525AN: Similar to SG3526BN but with a different pin configuration.
2. UC3526AN: Another PWM controller IC with similar features and specifications.
3. TL494CN: Widely used PWM controller IC suitable for various applications.
4. IR2153: Integrated half-bridge driver and PWM controller IC for high-power applications.

These alternative models offer similar functionalities and can be considered as substitutes for the SG3526BN in different applications.

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