SG2525AP

Product Overview

• Category: Integrated Circuit (IC)
• Use: PWM Controller
• Characteristics: High-performance, versatile
• Package: DIP-16 (Dual In-line Package with 16 pins)
• Essence: Regulates pulse width modulation (PWM) signals
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Input Voltage Range: 8V to 35V
• Output Voltage Range: 5V to 30V
• Maximum Duty Cycle: 50%
• Oscillator Frequency Range: 100kHz to 500kHz
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

1. VREF: Reference voltage input
2. COMP: Error amplifier output
3. CS: Current sense input
4. RT/CT: Timing components connection
5. DIS: Shutdown control input
6. GND: Ground reference
7. SYNC: Synchronization input
8. OSC: Oscillator timing capacitor connection
9. VCC: Positive supply voltage
10. OUTA: Output A
11. OUTB: Output B
12. FB: Feedback input
13. RT/CT: Timing components connection
14. CT/RT: Timing components connection
15. VFB: Feedback voltage input
16. VREF: Reference voltage input

Functional Features

• Precise regulation of PWM signals
• Wide input and output voltage range
• High efficiency and low power consumption
• Adjustable oscillator frequency
• Shutdown control for power saving
• Synchronization capability for multi-device operation

Advantages and Disadvantages

Advantages

• Versatile and widely used in various applications
• High-performance and reliable operation
• Compact package size for space-constrained designs
• Efficient power management capabilities

Disadvantages

• Limited maximum duty cycle of 50%
• Requires external timing components for operation
• Not suitable for high-frequency applications

Working Principles

The SG2525AP is a PWM controller that regulates the width of pulses in a PWM signal. It operates by comparing the feedback voltage with a reference voltage and adjusting the duty cycle accordingly. The error amplifier ensures precise regulation, while the oscillator sets the frequency of the PWM signal. The outputs A and B drive external power devices to control the output voltage.

Detailed Application Field Plans

The SG2525AP finds extensive use in various applications, including:

1. Switching Power Supplies: Provides efficient power conversion in AC-DC and DC-DC converters.
2. Motor Control: Enables speed and torque control in motor drives.
3. Lighting Systems: Facilitates dimming and brightness control in LED lighting.
4. Battery Chargers: Regulates charging current and voltage in battery charging circuits.
5. Audio Amplifiers: Controls audio signal amplification in audio systems.

Detailed and Complete Alternative Models

1. TL494: Similar PWM controller with adjustable frequency and duty cycle.
2. UC3842: PWM controller with integrated high-voltage startup circuitry.
3. IRS2153D: Integrated half-bridge driver with PWM control functionality.

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